A Common Stomatal Parameter Set Used to Simulate the Energy and Water Balance over Boreal and Temperate Forests

Journal of the Meteorological Society of Japan. Ser. II

Kazuho MATSUMOTO⁵  Takeshi OHTA²  Hotaek PARK⁶  Tamaki ITO⁷  Kyoko KATO⁴  Naoko MIKI³  Takeshi YAMAZAKI⁸  Taro NAKAI¹ 

[1] International Arctic Research Center, University of Alaska Fairbanks, Alaska, USA;Graduate School of Bioagricultural Science, Nagoya University, Nagoya, Japan;Graduate School of Environmental Science, Okayama University, Okayama, Japan;Non-for-profit-organization information center, Niigata, Japan;Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa, Japan;Japan Agency for Marine-Earth Science and Technology, Yokosuka, Japan;Kumano Agriculture, Forestry, Commerce, Industry and Environment Office, Mie, Japan;Department of Geophysics, Graduate School of Science, Tohoku University, Sendai, Japan

关键词: stomatal parameter;    land surface model;    potential response;    energy flux;    evapotranspiration;   

DOI  :  10.2151/jmsj.2013-303

学科分类：大气科学

来源: Meteorological Society of Japan

【 摘 要 】

 A parameter set expressing the potential response used to simulate evapotranspiration was inferred from pooled data of leaf-level stomatal conductance in the Far East. We used Jarvis-type parameterization, which consists of restriction terms of light, air dryness, temperature, and soil water. Two parameter sets, pooled common (PC) and within-site (WS) sets, were determined using stomatal conductance data of eight species at nine sites. Seasonal changes of energy and water fluxes observed at four tower sites are well reproduced by a land surface model, despite using a different set of parameters. The results suggest that energy and water fluxes can be simulated using only one common parameter set with no parameter tuning, at least for forests in a wide region of the Far East. We discuss why similar fluxes were simulated using PC and WS parameters despite the clear differences between these two parameter sets. Sensitivity experiments showed that the effects of maximum stomatal conductance and soil water content mutually cancel each other in Yakutsk and that an optimum temperature effect was added.

【 授权许可】

Unknown