Search Results 1-20 of 269

Liqing SHA , TERAMOTO Munemasa , Nam Jin NOH , HASHIMOTO Shoji , Meng YANG , Montri SANWANGSRI , Naishen LIANG

… Soil respiration (<I>R</I><SUB>s</SUB>) is the largest flux of carbon dioxide (CO<SUB>2</SUB>) next to photosynthesis in terrestrial ecosystems. … As this region is characterised by highly diverse ecosystems, it is expected to experience the strong impact of ecosystem responses to global climate change. … This review focuses on five important aspects: 1) the historical methodology for soil C flux measurement; …

Journal of Agricultural Meteorology 77(1), 24-51, 2021

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Guirui YU , HIRANO Takashi

… AsiaFlux (http://www.asiaflux.net/) was established in 1999 as the Asian arm of FLUXNET, the worldwide flux network, to develop collaborative research and data sets on the cycles of carbon and water in key ecosystems in Asia, to organize workshops and training on current and related global change themes, and to cultivate next generation scientists to be informed leaders with skills and perspectives. … More than 100 flux observation towers were built in Asia, covering diverse terrestrial ecosystems. …

Journal of Agricultural Meteorology 77(1), 1-1, 2021

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Lisa A. Levin , Chih‐Lin Wei , Daniel C. Dunn , Diva J. Amon , Oliver S. Ashford , William W. L. Cheung , Ana Colaço , Carlos Dominguez‐Carrió , Elva G. Escobar , Harriet R. Harden‐Davies , Jeffrey C. Drazen , Khaira Ismail , Daniel O. B. Jones , David E. Johnson , Jennifer T. Le , Franck Lejzerowicz , Satoshi Mitarai , Telmo Morato , Sandor Mulsow , Paul V. R. Snelgrove , Andrew K. Sweetman , Moriaki Yasuhara

… Climate change manifestation in the ocean, through warming, oxygen loss, increasing acidification, and changing particulate organic carbon flux (one metric of altered food supply), is projected to affect most deep-ocean ecosystems concomitantly with increasing direct human disturbance. … Climate drivers will alter deep-sea biodiversity and associated ecosystem services, and may interact with disturbance from resource extraction activities or even climate geoengineering. …

Global Change Biology 26(9), 4664-4678, 2020-07-06

IR 

Akahori Aika , Watanabe Yasuto , Tajika Eiichi

<p>初期地球の「暗い太陽」の条件下で温暖気候を実現するためには，メタン菌の活動によって生成されるメタンが重要な役割を演じていたのではないかと考えられている．Ozaki et al. (2018) は，大気光化学－海洋微生物生態系結合モデルを用いて太古代の地球大気に想定されるメタン濃度が実現可能な条件を検討した．そして，当時の主要な基礎生産者が水素資化光合成細菌と鉄酸化光合成細菌の共存 …

Abstracts of Annual Meeting of the Geochemical Society of Japan 67(0), 68, 2020

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NOMURA Daiki , YABE Itsuka S. , SON Eun Yae , VIVIER Frederic , LOURENCO Antonio , LEBRUN Marion , NOSAKA Yuichi , HIRAWAKE Toru , OOKI Atsushi , AOKI Shigeru , ELSE Brent , WONGPAN Pat , FRIPIAT Francois , INOUE Jun , VANCOPPENOLLE Martin , TOYOTA Takenobu , TANIKAWA Tomonori , KAWAGUCHI Yusuke , ONO Takashi , ISHINO Tomomi , TOZAWA Manami , TAMURA Tetsuya P.

… In this contribution, we describe a physical, chemical, and ecosystem survey at Saroma-ko Lagoon, conducted over February 23-28, 2019 under the auspices of the SLOPE2019 (Saroma-ko Lagoon Observations for sea ice Physico-chemistry and Ecosystems 2019) program. … flux chamber, and under-ice turbulent heat flux systems were tested for future Arctic and Antarctic expeditions. …

Bulletin of Glaciological Research 38(0), 1-12, 2020

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Besnard Simon , Carvalhais Nuno , Arain M. Altaf , Black Andrew , Brede Benjamin , Buchmann Nina , Chen Jiquan , Clevers Jan G. P. W , Dutrieux Loïc P. , Gans Fabian , Herold Martin , Jung Martin , Kosugi Yoshiko , Knohl Alexander , Law Beverly E. , Paul-Limoges Eugénie , Lohila Annalea , Merbold Lutz , Roupsard Olivier , Valentini Riccardo , Wolf Sebastian , Zhang Xudong , Reichstein Markus

… Current forest CO₂ flux dynamics are controlled by instantaneous climate, soil, and vegetation conditions, which carry legacy effects from disturbances and extreme climate events. … Here, we combined remote sensing, climate, and eddy-covariance flux data to study net ecosystem CO₂ exchange (NEE) at 185 forest sites globally. …

PLOS ONE 14(2), 2019-02-06

IR 

Shingubara Ryo , Morozumi Tomoki , Sugimoto Atsuko

… <p>This review demonstrates carbon cycle and methane dynamics in the Arctic ecosystem, which plays an important role in carbon dioxide and methane emissions because of large stocks of soil organic matter, rapid Arctic warming, and permafrost thaw. … Exchange of carbon dioxide between terrestrial ecosystem and the atmosphere is determined by the balance between ecosystem respiration and primary production. …

Chikyukagaku 53(4), 183-197, 2019

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Nakayama Keisuke , Maruya Yasuyuki , Matsumoto Kei , Komai Katsuaki , Kuwae Tomohiro

… Since marine derived nitrogen (MDN) is hypothesized to largely be transported in particulate form, it is necessary to investigate the contribution of particulate MDN in ground surface soils to the total MDN at the river ecosystem scale. …

Estuarine Coastal and Shelf Science (212), 286-293, 2018-11-15

IR 

DU Mingyuan , YONEMURA Seiichiro , TANG Yanhong , LI Yingnian , ZHANG Fawei , ZHAO Liang , LI Hongqin , NIU Ben , HE Yongtao , ZHANG Xianzhou , LIU Jingshi

… flux at a wide-distributed alpine meadow since 2001 and at a wide-distributed alpine wetland since 2009 by eddy covariance (EC) method on the Tibetan Plateau. … Recent climatic change and change of livestock production in relation with in situ observation of grassland net ecosystem CO₂ …

Journal of Arid Land Studies 28(S), 139-142, 2018

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Kosugi Yoshiko , Takanashi Satoru , Noguchi Shoji , Itoh Masayuki , Nakaji Tatsuro , Kamakura Mai , Azuma Wakana , Shumsuddin Siti Aisha , Lion Marryanna

熱帯雨林機能の評価は、世界的にも重要な課題と目されており、数々の数値実験や衛星データを使った広域マッピングなどが世界中でおこなわれているが、水の影響を定量評価するのに、数値モデリングによる解析や、年・月単位降水量・土壌水分等との単なる相関解析だけでは不十分である。現地測定に基づくガス交換の動的変動に関する詳細な情報に基づいて生態系の反応特性を定量化する作業が不可欠であるが、そのような情報はこれまで …

Proceeding of Annual Conference 31(0), 54, 2018

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