Simulating canopy stomatal conductance of winter wheat and its distribution using remote sensing information

Article type: Research Article

Authors: Zhang, Jia-hua | Fu, Cong-bin | Hiroshi, Kanzawa

Affiliations: Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. E-mail: [email protected] | Atmospheric Environmental Division, National Institute for Environmental Studies, 16-2, Tsukuba, Ibaraki 305-0053, Japan

Abstract: The canopy stomatal movement, a plant physiological process, generally occurs within leaves but its influence on exchange of CO_2, water vapor, and sensible heat fluxes between atmosphere and terrestrial ecosystem. Many studies have documentedthat the interaction between leaf photosynthesis and canopy stomatal conductance is obvious. Thus, information on stomatal conductance is valuable in climate and ecosystem models. In curren study, a newly developed model was adopted to calculate canopy stomatal conductance of winter wheat in Huang-Huai-Hai (H-H-H) Plain of China (31.5-42.7° N, 110.0-123.0° E). The remote sensing information from NOAA-AVHRR and meteorological observed data were used to estimate regional scale stomatal conductance distribution. Canopy stomatal conductance distribution pattern of winter wheat on March 18, 1997 was also presented. The developed canopy stomatalconductance model might be used to estimate canopy stomatal conductance in land surface schemes and seems can be acted as a boundary condition in regional climatic model runs.

Keywords: remote sensing information, H-H-H(Huang-Huai-Hai)Plain, stomatal conductance, winter wheat

Journal: Journal of Environmental Sciences, vol. 13, no. 4, pp. 439-443, 2001