Taking forest areas specified according to information on the National digital land data, the vapour pressure deficit at leaf temperature and the degree of stomatal opening were presumed using the vegetation index of forest areas derived from Landsat TM data. Assuming the principle of Monin-Obukhov similarity is correct, a new method for calculating the latent and sensible heat fluxes of regional forests was proposed taking into account the difference in Leaf Area Index. The relation of the increase of latent heat flux with the vegetation index was obtained, and the plane distribution of latent and sensible heat fluxes in large areas is calculated.
Providing practical solution to water problems,-Following the 3t World Water Forum, 4) Food and Agriculture Organization of the United Nations: FAO FAOSTAT Database, http://apps.fao.org/cgi-bin/ nph-db.pl?subset=agriculture 5) Otsubo, K., Regional differences in future food supply in China-viewed from the land-use grid data-, Proceedings of 1999 NIES Workshop on Information Bases and Modeling for Land-use and Land-cover Changes Studies in
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