Asanuma Jun

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Water balance for a Mongolian steppe and its environmental constraints

Shenggong Li Asanuma Jun Ayumi Kotani Gombo Davaa Oyunbaartar Dambaravjaa

6km 2 ) (World Resources Institute, 2003). For the semiarid and arid ecosystems like Mongolian steppe, water stress is a limiting factor for plant growth, and vegetation productivity is tightly associated with the multi-year precipitation variations. Therefore, information about water vapor exchange above the steppe ecosystem is crucial for an improved understanding of the coupling among water and carbon cycling, steppe management, and climate change in Mongolia. The eddy covariance (EC) technique is now widely used for long-term continuous flux measurements across the world (Baldocchi, 2003). In this study, we used the EC technique to quantify water vapor and energy fluxes above a steppe in Mongolia. II Materials and methods The study site is located at Kherlenbayan-Ulaan (KBU), the Hentiy province of Mongolia (lat. 47° 12.838' N, long. 108° 44.240' E, 1235 m a.m.s.l.) (Fig. 1). It was built in March 2003 as a component of the RAISE project for long-term measurements of microclimatic variables, water vapor, CO2 and energy fluxes. The climate is continental in the temperate zone. Average annual air temperature is 1.2 °C and average annual precipitation is 196 mm. The soil is the typical Chestnut soil. The vegetation is dominated by temperate C3

Steppe

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筑波山(男体山)の過去100年間における気温の長期変化

天気 (2011)

Nakatsuru Takahiro Y. Hayashi Ueno Ken'ichi Ueda Hiroaki Tsujimura Maki

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