2023/04/11 更新

写真a

ナカノ トモコ
中野 智子
NAKANO Tomoko
所属
経済学部 教授
連絡先
メールによる問い合わせは《こちら》から
外部リンク

学位

  • 博士(理学) ( 北海道大学 )

  • 修士(学術) ( 北海道大学 )

学歴

  • 1995年3月
     

    北海道大学   理学研究科   地球物理学専攻   博士   修了

  • 1992年3月
     

    北海道大学   環境科学研究科   環境保全学専攻   修士   修了

  • 1990年3月
     

    北海道大学   理学部   地球物理学科   卒業

  • 1986年3月
     

    北海道立札幌西高等学校   卒業

経歴

  • 2011年4月 -  

    中央大学経済学部教授

  • 2009年4月 - 2011年3月

    中央大学経済学部准教授

  • 2004年4月 - 2009年3月

    中央大学経済学部兼任講師

  • 1997年4月 - 2009年3月

    東京都立大学理学部助手(首都大学東京都市環境学部助教)

  • 1996年10月 - 1997年3月

    環境庁国立環境研究所科学技術特別研究員

  • 1996年4月 - 1996年9月

    北海道大学低温科学研究所COE研究員

  • 1995年4月 - 1996年3月

    北海道大学低温科学研究所研究生

▼全件表示

所属学協会

  • 日本雪氷学会

  • アメリカ地球物理学連合(American Geophysical Union)

  • 日本農業気象学会

  • 日本地理学会

研究キーワード

  • 半乾燥草原; 炭素循環; 植生動態; 画像解析

研究分野

  • 環境・農学 / 環境動態解析  / 環境動態解析

論文

  • Early validation study of the photochemical reflectance index (PRI) and the normalized difference vegetation index (NDVI) derived from the GCOM-C satellite in Mongolian grasslands 査読

    Undrakh Bayarsaikhan, Tomoko Kawaguchi Akitsu, Kaoru Tachiiri, Taiga Sasagawa, Tomoko Nakano, Bayar-Saikhan Uudus, Kenlo Nishida Nasahara

    International Journal of Remote Sensing   43 ( 14 )   5145 - 5172   2022年7月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Informa UK Limited  

    DOI: 10.1080/01431161.2022.2128923

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  • Large‐scale ecological field data for satellite validation in deciduous forests and grasslands 査読

    Tomoko Kawaguchi Akitsu, Tatsuro Nakaji, Hajime Kobayashi, Tetsuo Okano, Yoshiaki Honda, Undrakh Bayarsaikhan, Terigele, Masato Hayashi, Tsutom Hiura, Reiko Ide, Susumu Igarashi, Koji Kajiwara, Syoji Kumikawa, Yuuichi Matsuoka, Takashi Nakano, Tomoko Nakano, Atsushi Okuda, Tomoaki Sato, Kaoru Tachiiri, Yoshiyuki Takahashi, Jiro Uchida, Kenlo Nishida Nasahara

    Ecological Research   35 ( 6 )   1009 - 1028   2020年10月

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:Wiley  

    DOI: 10.1111/1440-1703.12155

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    その他リンク: https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1440-1703.12155

  • Responses of palatable plants to climate and grazing in semi-arid grasslands of Mongolia 査読

    Nakano, T, Bat-Oyun, T, Shinoda, M

    Global Ecology and Conservation   24   e01231   2020年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier  

    DOI: 10.1016/j.gecco.2020.e01231

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  • Quantitative evaluation of grazing effect on nomadically grazed grassland ecosystems by using time-lapse cameras 査読

    Nakano, T, Bavuudorj, Iijima, Y, Ito, T

    Agriculture, Ecosystems and Environment   287   106685   2020年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.agee.2019.106685

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  • Interannual variation in net ecosystem CO2 exchange and its climatic controls in a semiarid grassland of mongolia 査読

    Tomoko Nakano, Masato Shinoda

    Journal of Agricultural Meteorology   74 ( 2 )   92 - 96   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Society of Agricultural Meteorology of Japan  

    Year-round eddy covariance flux measurements were made in a semiarid grassland in Mongolia during 2009-2014 to examine the interannual variability in net ecosystem CO2 exchange (NEE) and its climatic controls. Annual cumulative NEE ranged from -20.9 to 8.1 g C m-2 yr-1, indicating that the semiarid grassland ecosystem can be a carbon source or a carbon sink, depending on climatic conditions. A correlation analysis showed that interannual variability in NEE was significantly related to precipitation and soil water content at 10 cm depth (SWC10) in June and to the vapor pressure deficit (VPD) in July. In addition, the variation in gross primary production (GPP) in July contributed most to the interannual variation in NEE
    and GPP in July was significantly related to June precipitation, June SWC10, and July VPD. From these results, we concluded that precipitation during the early growing season and air dryness during the middle growing season were essential climatic factors regulating the interannual variation in NEE in this semiarid grassland.

    DOI: 10.2480/agrmet.D-17-00035

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  • Modeling gross primary production and ecosystem respiration in a semiarid grassland of Mongolia. 査読

    Nakano, T, Shinoda, M

    Soil Science and Plant Nutrition   61 ( 1 )   106 - 115   2015年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人日本土壌肥料学会  

    We constructed an empirical model in which the rates of gross primary production (GPP) and ecosystem respiration (R_<eco>) were calculated using meteorological, soil and plant variables, based on our previous measurements of carbon dioxide (CO_2) fluxes using a closed-chamber technique in Mongolian grasslands. In the previous studies, we determined GPP and R_<eco> using transparent and opaque chambers and simultaneously measured the environmental variables inside and beside the chambers. These measurements allowed us to quantify direct and accurate relationships between the rates of GPP and R_<eco> and their controlling factors. The GPP, R_<eco> and their difference net ecosystem CO_2 exchange (NEE) were computed in a semiarid grassland site of Mongolia for the growing seasons of 2010 and 2011 using observed values of photo-synthetically active radiation, air and soil temperatures, vapor pressure deficit, soil water content and estimated values of aboveground biomass from a remotely sensed vegetation index. Model performance was validated by comparing the modeled and observed NEE values using an eddy covariance technique. Results showed that the model successfully reproduced the magnitude and seasonal variations of the observed NEE, and regression analysis showed reasonable agreement in both years. Cumulative rates of GPP and R_<eco> during the plant-growing season (May - September) were 200.3 and 210.5 g carbon (C) m^<-2> in the dry year (2010) and 342.3 and 300.1 g C m^<-2> in the wet year (2011), respectively. This result indicates that drought was more effective in reducing CO_2 uptake by the plant than in reducing ecosystem respiration. Consequently, the grassland ecosystem was a net carbon source during the growing season in 2010 and a net carbon sink in 2011.

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  • Spatial variability of photosynthetic production and ecosystem respiration on a hundred-kilometer scale within a Mongolian semiarid grassland 査読

    Tomoko Nakano, Masato Shinoda

    JOURNAL OF AGRICULTURAL METEOROLOGY   70 ( 2 )   105 - 116   2014年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SOC AGRICULTURAL METEOROLOGY JAPAN  

    Grassland ecosystems cover a large area of the land surface and play an important role in the global carbon cycle. The objectives of this study were to examine the spatial variability of gross primary production (GPP) and ecosystem respiration (R-eco) within a semiarid grassland ecosystem and to evaluate the environmental factors that control the spatial patterns of carbon exchanges. We determined GPP and R-eco using transparent and opaque closed chambers at nine grassland sites in central Mongolia during the summers from 2009 through 2011. To remove effects of temporal changes in radiation and temperature, GPP and R-eco were fitted to light- and temperature-response curves. The fitting parameters (light-saturated GPP [P-max], apparent quantum yield [alpha], standardized R-eco at 20 degrees C [R-20], and the temperature sensitivity [Q(10)] of R-eco) were compared among the sites. The GPP and R-eco parameters differed significantly among the sites. Spatial patterns of P-max and R-20 were highly correlated with plant aboveground green biomass (A GB) and number of plant species. The Q(10) of R-eco was significantly related to soil moisture. The light-saturated GPP normalized to the amount of AGB did not differ significantly among the sites, whereas the R-20 residuals of the linear biomass model were correlated with soil water content and carbon/nitrogen ratios. The results suggest that, within this semiarid grassland, spatial variations of GPP are strongly controlled by AGB and that variations in R-eco are associated mainly with AGB and secondarily with soil water content and soil nutrient condition.

    DOI: 10.2480/agrmet.D-13-00026

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  • Monitoring aboveground biomass in semiarid grasslands using MODIS images 査読

    Tomoko Nakano, Ganbat Bavuudorj, Nachinshonhor G. Urianhai, Masato Shinoda

    JOURNAL OF AGRICULTURAL METEOROLOGY   69 ( 1 )   33 - 39   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SOC AGRICULTURAL METEOROLOGY JAPAN  

    In the present study, we calculated seven vegetation indices (simple ratio [SR], normalized difference vegetation index [NDVI], enhanced vegetation index [EVI], soil-adjusted vegetation index [SAVI], optimized soil-adjusted vegetation index [OSAVI], land surface water index [LSWI], and greenery ratio [GR]) based on MODIS surface reflectance data and analyzed the relationships between these indices and the aboveground biomass in semiarid grasslands in Mongolia. The measured values of the biomass for the study area ranged from 7.5 to 137.0 g dry weight (dw) m(-2). The results revealed that NDVI, SR, and OSAVI were strongly correlated with the biomass. Among these, NDVI showed the best performance as a proxy of the plant biomass of Mongolian grasslands. The relationships of NDVI and OSAVI with the temporal variation and spatial pattern of biomass were statistically similar, suggesting that a single linear equation was appropriate to derive aboveground biomass values from NDVI or OSAVI.

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  • Temporal and spatial variability of nocturnal cooling in a complex of small valleys in the Kanto Plain during the winter 査読

    Shohei Konno, Tomoko Nakano, Hideo Takahashi

    JOURNAL OF AGRICULTURAL METEOROLOGY   69 ( 3 )   191 - 200   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SOC AGRICULTURAL METEOROLOGY JAPAN  

    We investigated the temporal and spatial variability of nighttime temperatures in a complex of small valleys in the western Kanto Plain, Saitama Prefecture, Japan, by conducting horizontal and vertical temperature measurements throughout one winter season. The magnitude of nocturnal cooling in the valley was greater in March than during the mid-winter period. The horizontal distribution of mean nighttime temperatures and nocturnal cooling under clear and calm conditions indicated that temperatures in the middle or lower areas of the valleys tended to be lower than those in the upper areas even though the elevation differences were small. Vertical profiles of air temperature measured by a kytoon system on clear nights revealed the development of a temperature inversion above the valley floor at night; the top of the inversion exceeded the height of the ridge adjacent to the valley. Under these conditions, down-valley flows of cold air were a significant phenomenon below the inversion layer. Our results suggest that local nocturnal drainage flow below the temperature inversion could contribute to nocturnal cooling in these valleys.

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  • 都市内緑地における落葉広葉樹の樹液流速とその環境要素への依存性, 生物と気象 査読

    桐越仁美, 中野智子

    生物と気象   11   31 - 40   2011年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本農業気象学会  

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  • Modeling of the interannual variation in ecosystem respiration in a semiarid grassland ecosystem

    Nakano, T, Shinoda, M

    Principles, Application and Assessment in Soil Science   167 - 178   2011年12月

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    記述言語:英語   出版者・発行元:InTech  

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  • 都市内緑地におけるクールアイランドの鉛直構造 査読

    菅原広史, 田中博春, 成田健一, 中野智子, 三上岳彦

    地学雑誌   120   426 - 432   2011年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

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  • Estimation of methane emission from west siberian lowland with subpixel land cover characterization between MODIS and ASTER

    Wataru Takeuchi, Tomoko Nakano, Yoshifumi Yasuoka

    Remote Sensing and Digital Image Processing   11   421 - 437   2011年

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    記述言語:英語   掲載種別:論文集(書籍)内論文   出版者・発行元:Springer International Publishing  

    Wetlands are one of the most important ecosystems in the world. The West Siberian Lowland (WSL) is the world’s largest high-latitude wetland covering nearly two-thirds of western Siberia
    thus, remote sensing techniques play an important role in monitoring them. At least half of this area consists of peatlands, which sequester atmospheric carbon in the form of slightly decomposed plant matter. WSL is considered a net source of methane gas, which is one of the most important greenhouse gases. High spatial resolution satellite data are effective for monitoring land cover type changes, but cannot cover a wide area because of a narrow swath width. On the other hand, global scale data are indispensable in covering large areas, but are too coarse to acquire detailed information because of their low spatial resolution. We need to devise a method for data fusion with different spatial resolutions for monitoring such scale-variant phenomena. In this chapter, a Terra ASTER image near Noyabrsk mire is used to map six wetland ecosystems (bare soil, birch forest, conifer forest, open bog, open water, and palsa) supplemented by field observation. Spectral mixture analysis is then performed between Terra MODIS and ASTER data acquired on the same day. Field observations of CH4 flux are subsequently scaled up with these different spatial resolution satellite data. Each of the wetland ecosystem coverage fraction at the subpixel level is provided by spectral mixture analysis. Field observation shows that the mean rate of CH4 emission from open bog and open water averaged 123.1 and 24.6 mg C/m2/day, respectively. The methane emission from the area is estimated by multiplying these average methane emission rates and the fraction coverage in each MODIS pixel. Finally, the total methane emission over MODIS coverage is estimated at 1.86 × 109 g CH4/day and the mean methane emission over MODIS coverage was calculated as 43.1 mg C/m2/day. We conclude that this mean value is within the probabilistic variability when compared with the other research results.

    DOI: 10.1007/978-1-4419-6749-7_18

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  • Response of ecosystem respiration to soil water and plant biomass in a semiarid grassland 査読

    Tomoko Nakano, Masato Shinoda

    SOIL SCIENCE AND PLANT NUTRITION   56 ( 5 )   773 - 781   2010年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:TAYLOR & FRANCIS LTD  

    The Mongolian steppe zone constitutes a major part of East Asian grasslands. The objective of this study was to evaluate the quantitative dependence of ecosystem respiration (R-eco) on the environmental variables of soil water and plant biomass in a semiarid grassland ecosystem. We determined R-eco using opaque, closed chambers in a Mongolian grassland dominated by graminaceous perennial grasses during six periods: July 2004, May 2005, July 2005, September 2005, June 2006, and August 2009. Using the data collected when soil water content and aboveground biomass were relatively constant, values of R-eco were fitted to an exponential temperature function, and the standardized rate of R-eco at 20 degrees C (R-20) and temperature sensitivity (Q(10)) of R-eco were calculated for each measurement plot and period. The results indicate that aboveground biomass significantly affected the variation in R-20, and the relationship was expressed with a linear model. The R-20 residuals of the linear biomass model were highly correlated with soil water content by a quadratic function. The Q(10) values showed a weak positive relationship with soil water content. Temporal and spatial variations in R-eco were well predicted by the exponential temperature model with R-20, which relates to aboveground biomass and soil water content, and with Q(10), which relates to soil water content.

    DOI: 10.1111/j.1747-0765.2010.00502.x

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  • Environmental controls on photosynthetic production and ecosystem respiration in semi-arid grasslands of Mongolia 査読

    Nakano, T, Nemoto, M, Shinoda, M

    Agricultural and Forest Meteorology   148   1456 - 1466   2008年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier  

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  • Meteorological observations at Tokyo Metropolitan University since 2001

    Nakano, T

    Geographical Reports of Tokyo Metropolitan University   43   131 - 136   2008年3月

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    記述言語:英語   掲載種別:研究論文(大学,研究機関等紀要)   出版者・発行元:首都大学東京都市環境学部地理環境コース  

    Basic meteorological data have been recorded from a 15-m tower at Tokyo Metropolitan University since 1997. This paper describes the monthly air temperature, relative humidity, wind speed and direction, and solar radiation data measured at the tower since April 2001. Interannual variation in monthly mean air temperature (MMAT) was largest in July and second-largest in November. July also had the widest fluctuation in monthly mean daily maximum temperature, which related to variations in solar radiation and wind speed. The greatest variation in the monthly mean daily minimum temperature occurred in November.

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  • Measurements of Nighttime Water Vapor Flux Using a Closed Chamber Technique 査読

    Tomoko Nakano, Manabu Nemoto, Masato Shinoda

    Journal of Agricultural Meteorology   63 ( 2 )   103 - 107   2007年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Nighttime water vapor transportation from the atmosphere to the ground surface, which involves dew formation and water vapor adsorption to the soil, is very small, yet its contribution to the water budget has been recognized as important, especially in arid and semiarid regions. We applied a closed-chamber (CC) technique to measure nighttime water vapor flux between the atmosphere and a grassland ecosystem and used a microlysimeter (ML) method to validate the results of the CC measurements. The CC measurements were conducted on nine nights in May, July, and September of 2005 and June of 2006 at a Mongolian semiarid grassland. The results of our study indicate that water vapor was transported upward during five nights and downward during four nights, and the magnitude of nighttime water vapor fluxes ranged between -0.011 mm h-1 and 0.011 mm h-1 (a positive value represents upward transportation). We also found that downward vapor transportations were involved in both dew formation and direct water vapor adsorption. The results of the CC and ML methods showed good agreement, suggesting that the CC method is appropriate for measuring small water vapor fluxes. © 2007, The Society of Agricultural Meteorology of Japan. All rights reserved.

    DOI: 10.2480/agrmet.63.103

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  • 密閉式チャンバー法を用いた夜間水蒸気フラックスの測定 査読

    中野智子, 根本学, 篠田雅人

    農業気象   63 ( 2 )   103 - 107   2007年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本農業気象学会  

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    その他リンク: http://agriknowledge.affrc.go.jp/RN/2010741486

  • モンゴル半乾燥草原における草本―大気間のCO2交換

    中野智子, 根本学, 篠田雅人

    筑波大学陸域環境センター報告   7 ( 2 )   51 - 53   2007年3月

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    記述言語:日本語   掲載種別:研究論文(大学,研究機関等紀要)   出版者・発行元:筑波大学陸域環境センター  

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  • サブピクセル土地被覆特性解析による西シベリア湿地性森林の火災地回復観測 査読

    竹内渉, 中野智子, 越智士郎, 安岡善文

    日本リモートセンシング学会誌   27 ( 1 )   13 - 23   2007年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本リモートセンシング学会  

    Recently, the number of forest fires in West Siberian Lowland (WSL) is increasing and they are considered as one of the main driving factors influencing carbon cycling in whole earth. Since many forest fires take place in large and hardly accessible areas, remote sensing seems to be the most appropriate tool for creating forest fire recovering history. In this paper, SPOT HRV and Landsat ETM images were used to highlight the damaged area by fire that occurred in the summer of 1998. The damaged area was extracted by using principal component analysis supplemented by ground truth data. The total burnt area was calculated to be 13.8 (km2). Then re-generation condition in burnt area from 1995 to 2002 was investigated using NOAA AVHRR data with sub-pixel land cover characterization. We demonstrate that the phenomena observed by remote sensing data is consistent with climatic data including daily precipitation and temperature. The method proposed in this study can be an effective way for forest recovering monitoring.

    DOI: 10.11440/rssj.27.13

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  • Changes in surface methane flux after a forest fire in West Siberia

    Nakano, T

    Hatano, R. and Guggenberger, G. eds., Symptom of Environmental Change in Siberian Permafrost Region   55 - 63   2006年4月

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    記述言語:英語   出版者・発行元:北海道大学出版会  

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  • モンゴル半乾燥草原における密閉式チャンバー法を用いたCO2フラックス測定

    中野智子, 根本学, 篠田雅人

    CGER-REPORTS『炭素循環および温室効果ガス観測ワークショップ講演要旨集』   150 - 151   2006年3月

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    記述言語:日本語   掲載種別:研究論文(研究会,シンポジウム資料等)   出版者・発行元:国立環境研究所地球環境研究センター  

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  • Temporal variations in soil-atmosphere methane exchange after fire in a peat swamp forest in West Siberia 査読

    Nakano,T, Takeuchi, W, Inoue, G, Fukuda, M, Yasuoka Y

    Soil Science and Plant Nutrition   52   77 - 88   2006年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本土壌肥料学会  

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  • Methane consumption and soil respiration by a birch forest soil in West Siberia 査読

    T Nakano, G Inoue, M Fukuda

    TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY   56 ( 3 )   223 - 229   2004年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:BLACKWELL MUNKSGAARD  

    Methane and carbon dioxide fluxes were measured in a birch forest soil in West Siberia, in August 1999, June 2000 and September 2000. The study site had a very thick organic horizon that was subject to drought during the observation periods. The soils always took up CH4, while CO2 was released from the surface to the atmosphere. CH4 consumption and CO emission rates ranged from 0.092 to 0.28 Mg C m(-2) h(-1) and from 110 to 400 mg C m(-2) h(-1) respectively. The CH4 consumption rate and soil temperatures showed significant relationships for individual measurements. The soil respiration rate was weakly correlated with individual soil temperatures. This study examined the effect of current and lagged soil temperatures at a depth of 5 cm on CH4 consumption and soil respiration. The variation in the correlation coefficient between CH4 consumption and lagged soil temperature was greatest at a 4-h lag, whereas that for soil respiration showed a gentle peak at lags from several hours to half a day. This difference in the temperature-related lag effect between CH4 consumption and soil respiration results from differences in the exchange processes. Neither flux showed any correlation with soil moisture. The limited variation in soil moisture during our observation period may account for the lack of correlation. However, the droughty soil conditions resulted in high gas diffusion and, consequently, high CH4 consumption.

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  • Meteorological observations at Tokyo Metropolitan University in 2002 and 2003

    Nakano, T, Mikami, T

    Geographical Reports of Tokyo Metropolitan University   39   13 - 20   2004年3月

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    記述言語:英語   出版者・発行元:東京都立大学理学部地理学科  

    An observational tower with 15 m high standing on Tokyo Metropolitan University has been providing basic meteorological data since March 1997. Data of air temperature, relative humidity, wind speed and direction, and solar radiation from January 2002 to December 2003 are reported in this paper.

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  • 現地観測と衛星画像解析に基づく森林火災後の地表面メタンフラックス推定

    中野智子, 竹内渉

    生研フォーラム『宇宙からの地球環境モニタリング』第13回論文集   52 - 57   2004年3月

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    記述言語:日本語   出版者・発行元:東京大学生産技術研究所  

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  • A comparison of regression methods for estimating soil-atmosphere diffusion gas fluxes by a closed-chamber technique 査読

    T Nakano, T Sawamoto, T Morishita, G Inoue, R Hatano

    SOIL BIOLOGY & BIOCHEMISTRY   36 ( 1 )   107 - 113   2004年1月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PERGAMON-ELSEVIER SCIENCE LTD  

    Continuous changes in methane (CH4) and carbon dioxide (CO2) concentrations inside a closed chamber were measured on the forest floor at three sites: a deciduous forest and a coniferous forest in Hokkaido, Japan, and a birch forest in West Siberia, Russian Federation. Flux estimations by three types of regression methods, exponential, nonlinear, and linear, were examined using field-collected concentration data. The pattern of change with time of the gas concentration in the headspace differed, mainly according to site but also, to a lesser extent, according to the gas. This was a function of both the chamber height and surface soil property relating to soil gas diffusion and the gas concentration profile. Flux estimations did not differ statistically between the exponential and nonlinear methods for either gas at any site, because both of those regression methods were based on diffusion theory. However, the flux values estimated by linear regression were significantly different from those estimated by the other two methods for both CH4 and CO2 at the deciduous forest site and for CO2 at the coniferous forest site. Shortening the chamber deployment period improved the linearity of the curve, but did not completely eliminate the error. Our results suggest that linear regression is not a good model of the change in headspace concentration with time. (C) 2003 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.soilbio.2003.07.005

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  • Meteorological observations at Tokyo Metropolitan University in 2001

    Nakano, T, Mikami, T

    Geographical Reports of Tokyo Metropolitan University   38   23 - 27   2003年3月

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    記述言語:英語   出版者・発行元:東京都立大学理学部地理学科  

    An observational tower with 15m high standing on Tokyo Metropolitan University has been providing basic meteorological data since March 1997. Data of air temperature, relative humidity, wind speed and direction, and solar radiation from January to December 2001 are reported in this paper.

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  • 三宅島の気象

    中野智子, 木村圭司, 根本学 他

    地理   48 ( 1 )   23 - 27   2003年1月

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    記述言語:日本語   出版者・発行元:古今書院  

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  • 西シベリアの白樺林における森林火災前後の炭素循環の変化

    中野智子, 朝日知歩, 越智士郎

    生研フォーラム『宇宙からの地球環境モニタリング』第11回論文集   56 - 59   2002年3月

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    記述言語:日本語   出版者・発行元:東京大学生産技術研究所  

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  • Estimation of methane emission from West Siberian Lowland with sub-pixel land cover characterization

    Wataru Takeuchi, Tomoko Nakano, Shiro Ochi, Yoshifumi Yasuoka

    International Geoscience and Remote Sensing Symposium (IGARSS)   4   2351 - 2353   2002年

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    掲載種別:研究論文(国際会議プロシーディングス)  

    West Siberian Lowland (WSL) is the world's largest high-latitude wetland covering nearly 2/3 of western Siberia. At least half of this area consists of peatlands, which sequester atmospheric carbon in the form of unde-composed plant matter and it is presumed to be the source of methane gas. In this paper, firstly, an ASTER image near Noyabrsk mire was used to map 6 wetland ecosystem (red pine, white birch, bog, palsa, open water and bare soil) supplemented by field observation. Then spectral linear mixture analysis was performed between MODIS and ASTER data acquired on the same day. Secondly, field observations were scaled up with these different spatial resolution satellite data. Each of the wetland ecosystem coverage ratio in sub-pixel level was provided by the spectral linear mixture analysis. Field observation shows that the mean rate of CH4 emission from bog and open water averaged 5.246 and 1.081 (mg CH4 m-2h-1) respectively. The methane emission from the area was estimated by multiplying these average methane emission rate and the area percentage of bog and open water in each pixel. Finally, the mean methane emission over MODIS coverage was estimated 1.864 (109g CH4/day).

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  • 人工造成地における土壌からのCO2フラックスの日変化 査読

    中野智子, 亀井千絵

    農業気象   57 ( 3 )   155 - 159   2001年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本農業気象学会  

    Diurnal variation in CO2 flux from the soil was measured by a closed chamber technique at a developed land site in Tokyo from September to November in 1999. The measurements were made four times for 24-h periods at two fixed sites where there was no plant cover (A) and where Miscanthus sinensis was dominant (B). CO2 fluxes averaged 98.2mg CO2 m-2h-1 at the site A and 184.3mg CO2 m-2h-1 at the site B. The fluxes from both sites showed a clear diurnal variation, which was high during the day and low at night. The temporal variation was highly correlated with the air and soil temperatures, especially at depths of 1 and 5cm. The relationship between CO2 flux and temperature was exponential. The CO2 flux increased exponentially 1.99 times when the soil temperature at 1cm deep increased by 10°C.

    DOI: 10.2480/agrmet.57.155

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  • シベリアにおける広域メタン発生量の推定

    中野智子

    生研フォーラム『宇宙からの地球環境モニタリング』第10回論文集   13 - 16   2001年3月

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    記述言語:日本語   出版者・発行元:東京大学生産技術研究所  

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  • Meteorological observations at Tokyo Metropolitan University in 2000

    Nakano, T, Mikami, T

    Geographical Reports of Tokyo Metropolitan University   36   11 - 16   2001年3月

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    記述言語:英語   出版者・発行元:東京都立大学理学部地理学科  

    Meteorological observations have been carried out at the 15 m observational tower in Tokyo Metropolitan University since March 1997. Data of air temperature, relative humidity, wind speed and direction, and solar radiation from January to December 2000 are reported in this paper.

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  • Measurements of methane and carbon dioxide fluxes in a birch forest in West Siberia after burning

    Nakano, T, Asahi, C, Inoue, G

    Proceedings of 9th Symposium on the Joint Siberian Permafrost Studies between Japan and Russia in 2000   145 - 149   2001年3月

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    記述言語:英語   出版者・発行元:北海道大学  

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  • Methane flux in grassy marshlands near Kolyma River, north-eastern Siberia 査読

    S. Tsuyuzaki, T. Nakano, S. I. Kuniyoshi, M. Fukuda

    Soil Biology and Biochemistry   33 ( 10 )   1419 - 1423   2001年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier  

    The relationships between vegetation types and methane flux were evaluated in north-eastern Siberia in the summer of 1995. Based on 71 50 × 50-cm plots, the vegetation was divided into three types by TWINSPAN cluster analysis: (1) Eriophorum grassland where species richness was high and moss well-established (Eriophorum grassland), (2) horsetail grassland with moss cover and (3) Carex grassland without moss. Vascular plant cover in all vegetation types was less than 50%. The methane flux was measured by a static chamber method. Horsetail grassland emitted the highest amount of methane, 165.5 mg CH4/m2/d, while diverse-sedge grassland emitted less methane, i.e., -1.9 mg CH4/m2/d. Methane flux positively increased with electric conductivity (EC), water depth, thaw depth, and soil humidity. Of those, EC was strongly correlated to methane emission (Spearman's rank correlation, r2 = 0.630). The difference in methane flux between horsetail grassland and sedge-dominated grassland suggested that the morphological characteristics of vascular plants were important on methane transport, probably because vascular plants, such as horsetail, that developed aerenchyma and intercellular gas space promoted methane transport from soil to air while mosses do not. © 2001 Elsevier Science Ltd. All rights reserved.

    DOI: 10.1016/S0038-0717(01)00058-X

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  • Measurements of methane flux at a burnt forest in West Siberia: preliminary results

    Nakano, T, Fukuda, M, Utsumi, M

    Proceedings of 8th Symposium on the Joint Siberian Permafrost Studies between Japan and Russia in 1999   160 - 164   2000年3月

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    記述言語:英語   出版者・発行元:北海道大学  

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  • Temporal variation in methane emission from tundra wetlands in a permafrost area, northeastern Siberia 査読

    T Nakano, S Kuniyoshi, M Fukuda

    ATMOSPHERIC ENVIRONMENT   34 ( 8 )   1205 - 1213   2000年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:PERGAMON-ELSEVIER SCIENCE LTD  

    Summer variations in net methane flux and environmental variables were investigated in a Siberian permafrost area during the summers of 1993 and 1995. In each region, the measurements were made at two fixed sites: waterlogged wetlands and relatively dry grasslands. Methane flux from the waterlogged site at Tiksi (71.5 degrees N, 130.0 degrees E) averaged 46.3 mg CH4 m(-2) d(-1). Flux from the waterlogged Site at Chersky (68.5 degrees N, 161.4 degrees E) was approximately one order of magnitude greater than that at Tiksi and averaged 281.1 mg CH4 m(-2) d(-1). Fluxes from the relatively dry sites were near zero and frequently negative in both regions. The emissions from the waterlogged sites showed diurnal and intraseasonal variation, while no significant variation in flux was observed at the dry sites. Our results suggest that temporal variation in methane flux From waterlogged sires in permafrost areas was controlled by the thermal regime of a seasonal thaw layer. The diurnal variation in the flux was correlated with ground temperature at a depth of 10-30 cm. For summer-season variation. the correlation between flux and centimeter-degrees, which is the product of ground temperature and thaw depth, was quite strong. The parameter, centimeter-degrees, is expected to be a good predictive indicator of methane emission from wetlands in permafrost areas. (C) 2000 Elsevier Science Ltd. All rights reserved.

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  • Meteorological data at the 15 m observational tower in Tokyo Metropolitan University

    Suzuki, C, Nakano, T, Masuda, K

    Geographical Reports of Tokyo Metropolitan University   34   73 - 80   1999年3月

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    記述言語:英語   出版者・発行元:東京都立大学理学部地理学科  

    An observational tower standing on Tokyo Metropolitan University campus has been providing basic meteorological data needed for the satellite remote sensing analysis since April 1997. We will report the characteristics of observed data in terms of seasonal changes of several meteorological elements which are crucial for the energy balance components for understanding the climatology of our campus located in the western suburbs of Tokyo.

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  • Studies on CH4 fluxes from alpine wetlands at the Huashixia permafrost station, Tibetan Plateau 査読

    Jin, H, Cheng, G, Xu, B, Nakano, T

    Studies on CH4 fluxes from alpine wetlands at the Huashixia permafrost station, Tibetan Plateau   20   172 - 174   1998年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geographical Society of China  

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  • Automatic measurements of methane flux in West Siberian wetlands in 1997 summer

    Nakano, T, Inoue, G, Maksyutoc, S

    Proceedings of 6th Symposium on the Joint Siberian Permafrost Studies between Japan and Russia in 1997   211 - 215   1998年3月

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    記述言語:英語   出版者・発行元:北海道大学  

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  • Development of an automatic system for the field measurement of methane flux

    Nakano, T, Inoue, G

    Proceedings of 5th Symposium on the Joint Siberian Permafrost Studies between Japan and Russia in 1996   45 - 49   1997年3月

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    記述言語:英語   出版者・発行元:北海道大学  

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  • 北海道・大雪山における最終氷期以降の永久凍土の厚さの変化 査読

    中野智子

    雪氷   57 ( 2 )   125 - 132   1995年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本雪氷学会  

    本研究の目的は,現実的な気温変動に伴う永久凍土の厚さの変化を推定することである.これまで,永久凍土の厚さの変化は定常現象として扱われ,その推定には一般に解析的な手法が用いられていた.そのため,地表面の温度変化はステップ的あるいはべき乗則で与えられ,現実的なものではなかった.そこで,本論文では永久凍土の厚さの変化を非定常現象として扱い,潜熱の発生を考慮した非定常一次元熱伝導モデルを導入することにより,連続的な温度変化に伴う永久凍土の厚さの経時変化を推定した.計算は北海道・大雪山の山岳永久凍土に関して,最終氷期最寒期以降の2万年について行った.その結果,永久凍土の厚さは,2万年前から現在まで地表面温度の変化に追従して変化し,およそ5000年前に11.5 mと最も薄くなった後,現在は30.1 mに達していることなどが推定できた.この結果から,大雪山の永久凍土は氷期以降も融けきることなく存在し続けていたこと,気候最適期以降,再度成長したことが示された.また,永久凍土の厚さの変化は,土壌水分量及び地殻熱流量に対して敏感であるという結果も得られた.

    DOI: 10.5331/seppyo.57.125

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    その他リンク: https://jlc.jst.go.jp/DN/JALC/00033967462?from=CiNii

  • Estimation of methane emission from Siberian tundra wetlands

    Nakano, T

    Proceedings of 3th Symposium on the Joint Siberian Permafrost Studies between Japan and Russia in 1994   31 - 36   1995年3月

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    記述言語:英語   出版者・発行元:北海道大学  

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  • 携帯用自動ガス分析装置を用いたメタンフラックスの野外測定法 査読

    中野智子, 秋山明胤, 福田正己

    天気   41 ( 10 )   685 - 689   1994年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本気象学会  

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    その他リンク: http://dl.ndl.go.jp/info:ndljp/pid/10601550

  • Measurement of methane flux in a tundra wetland, Mustakh Island in 1993

    Nakano, T, Akiyama, A

    Proceedings of 2th Symposium on the Joint Siberian Permafrost Studies between Japan and Russia in 1993   37 - 39   1994年3月

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    記述言語:英語   出版者・発行元:北海道大学  

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  • Measurement of methane flux ifrom alases around Yakutsk, eastern Siberia in 1993

    Nakano, T, Nojiri, Y, Zeng, Y

    Proceedings of 2th Symposium on the Joint Siberian Permafrost Studies between Japan and Russia in 1993   40 - 44   1994年3月

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    記述言語:英語   出版者・発行元:北海道大学  

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  • Effects of climatic warming on the active layer 査読

    Nakano, T, Sone, T, Fukuda, M

    Proceedings of 6th International Conference on Permafrost   1   488 - 493   1993年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:International Society of Permafrost  

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  • Measurement of methane flux in a tundra region near Tiksi, eastern Siberia in 1992

    Nakano, T, Fukuda, M, Sone, T, Nagaoka, D

    Low Temperature Science, Ser. A   52   63 - 70   1993年3月

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    記述言語:英語   出版者・発行元:北海道大学低温科学研究所  

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  • 苫小牧演習林における自然積雪下の土壌凍結深観測

    石崎武志, 中野智子, 田中由美子

    低温科学資料集   52   11 - 24   1993年3月

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    記述言語:日本語   出版者・発行元:北海道大学低温科学研究所  

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  • 大雪山白雲小屋における気温変動特性

    中野智子, 曽根敏雄

    低温科学物理篇   51   173 - 181   1992年3月

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    記述言語:日本語   出版者・発行元:北海道大学低温科学研究所  

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  • 大雪山白雲小屋における気温変動特性 1987-1989年の気温観測資料

    曽根敏雄, 中野智子

    低温科学資料集   51   31 - 48   1992年3月

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    記述言語:日本語   出版者・発行元:北海道大学低温科学研究所  

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▼全件表示

書籍等出版物

  • 地理学事典

    日本地理学会( 担当: 分担執筆 範囲: 第Ⅰ部5フィールドワーク「地域から地球環境を診断する」)

    丸善出版  2023年1月  ( ISBN:9784621307939

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    総ページ数:xxii, 818p   記述言語:日本語  

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  • グローバル化による環境・社会の変化と国際連携

    中野智子( 担当: 共編者(共編著者) 範囲: 第1章 モンゴル国の気候変動と草原の変化)

    中央大学出版部  2022年3月 

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    総ページ数:280   担当ページ:1-36   記述言語:日本語   著書種別:学術書

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  • 宇宙から見た地球 -日本と世界-

    中野 智子( 担当: 共著 範囲: 4 レナ川-永久凍土地帯を流れる大河-)

    朝倉書店  2010年2月 

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    総ページ数:135   担当ページ:4   記述言語:日本語   著書種別:学術書

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MISC

講演・口頭発表等

  • モンゴル国における植物バイオマスと降水量の時空間変動

    中野智子, Bat-Oyun T

    日本農業気象学会2023年全国大会  2023年3月 

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    開催年月日: 2023年3月    

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  • 自動撮影画像を利用したモンゴル半乾燥草原の植生動態の推定

    中野智子・黒崎泰典・伊藤健彦・飯島慈裕

    日本農業気象学会2022年全国大会  ( オンライン )   2022年3月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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  • モンゴル草原における可食植物の気候応答

    中野智子・Bat-Oyun T.・篠田雅人

    日本農業気象学会2021年全国大会  ( オンライン )   2021年3月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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  • Temporal and spatial variations in climate and vegetation in Mongolia 招待 国際会議

    Nakano, T

    The 1st International Conference on Climate Change and Environment in Central and North-East Asia  2019年9月 

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    記述言語:英語   会議種別:口頭発表(招待・特別)  

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  • モンゴル国における気候変動とその植生への影響評価

    中野智子, Munkhtsetseg E

    日本地理学会2019年秋季学術大会  ( 新潟 )   2019年9月  日本地理学会

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    記述言語:日本語   会議種別:ポスター発表  

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  • Quantitative evaluation of grazing effect on semiarid grassland ecosystems in Mongolia 国際会議

    Nakano T, Bavuudorj G, Iijima Y, Ito T

    The 6th AGRIMBA-AVA Congress  ( ウランバートル, モンゴル )   2019年6月 

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    記述言語:英語   会議種別:口頭発表(一般)  

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  • モンゴル草原生態系に対する遊牧家畜の影響評価

    中野智子, 飯島慈裕, 伊藤健彦

    日本地理学会2018年春季学術大会  2018年3月 

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    記述言語:日本語   会議種別:ポスター発表  

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  • Carbon dioxide exchange in semiarid grasslands of Mongolia

    Nakano T, Iijima Y, Ito T, Shinoda M

    The 4th Interdisciplinary Oxford Desert Conference  2017年6月 

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    記述言語:英語   会議種別:口頭発表(一般)  

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  • インターバルカメラを用いた遊牧家畜による生態系への影響評価

    飯島慈裕, 伊藤健彦

    日本農業気象学会2017年全国大会  2017年3月 

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    記述言語:日本語   会議種別:ポスター発表  

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  • 半乾燥草原生態系におけるCO2交換の年々変動とその要因

    篠田雅人

    日本農業気象学会2016年全国大会  2016年3月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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  • モンゴル半乾燥草原に夏季のCO2収支の年々変動

    篠田雅人

    日本土壌肥料学会2015年度京都大会  2015年9月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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  • モンゴル半乾燥草原における植物成長期のCO2収支

    日本農業気象学会2014年全国大会  2014年3月 

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    記述言語:日本語   会議種別:ポスター発表  

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  • モンゴル半乾燥草原における生態系CO2交換量の年々変動の推定

    日本地球惑星科学連合  2013年5月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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  • 半乾燥草原におけるCO2フラックスの多点観測

    篠田雅人

    日本農業気象学会2012年全国大会  2012年3月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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  • 衛星マイクロ波土壌水分量プロダクトを用いた半乾燥草原の土壌水分量推定

    篠田雅人

    日本地理学会2012年春季学術大会  2012年3月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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  • 半乾燥地における植物地上部バイオマスの広域推定

    G. Bavuudorj, 篠田雅人

    日本農業気象学会関東支部例会  2011年12月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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  • 半乾燥草原におけるCO2フラックスの多点観測

    篠田雅人

    日本農業気象学会2011年全国大会  2011年3月 

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    記述言語:日本語   会議種別:口頭発表(一般)  

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▼全件表示

共同研究・競争的資金等の研究課題

  • モンゴル草原における二酸化炭素交換に対する遊牧の影響の定量的評価

    2016年4月 - 2017年3月

    公益財団法人アサヒグループ学術振興財団  民間助成金 

    中野智子

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    担当区分:研究代表者  資金種別:競争的資金

    遊牧が行われているモンゴル国の半乾燥草原において、実際に草原にいる家畜の数をカウントし、同時に炭素フラックスの測定を実施した。

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  • 半乾燥草原における二酸化炭素フラックスの多地点移動観測

    2010年4月 - 2013年3月

    文部科学省  科学研究費補助金(日本学術振興会・文部科学省)-基盤研究(C) 

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    資金種別:競争的資金

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  • 半乾燥草原におけるCO2収支の時空間変動推定モデルの構築

    2010年4月 - 2012年3月

    中野智子

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    担当区分:研究代表者  資金種別:競争的資金

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  • モンゴル半乾燥草原における植物バイオマスと土壌水分の広域推定

    2010年4月 - 2012年3月

    鳥取大学乾燥地研究センター共同利用研究費 

    中野智子

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    担当区分:研究代表者  資金種別:競争的資金

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