Estimation of regional evapotranspiration over Northwest China using remote sensing

被引：0

作者：

Chen Yun-hao

Li Xiao-bing

Shi Pei-jun

机构：

[1] Ministry of Education of China,Institute of Resources Science, Beijing Normal University, Key Laboratory of Environmental Change and Natural Disaster

来源：

Journal of Geographical Sciences | 2001年 / 11卷 / 2期

关键词：

evapotranspiration; remote sensing; vegetation cover-degree; Northwest China; P426.2; A;

D O I：

10.1007/BF02888684

中图分类号：

学科分类号：

摘要：

It is a very complicated problem to estimate evapotranspiration (ET) over a large area of land surface. In this paper, the evapotranspiration estimation models for dense vegetation and bare soil are presented, based on the information of parameters like vegetation cover-degree and surface albedo. Combined with vegetation cover-degree data, a model for regional evapotranspiration estimation over the heterogeneous landscape is derived. Through a case study using remote sensing data over Northwest China, the accuracy of the model for regional evapotranspiration estimation is checked. The result shows that the accuracy of the model is satisfactory. The features of evapotranspiration over Northwest China are also discussed with the application of the model.

引用

页码：140 / 148

页数：8

共 28 条

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