Review of several problems on the study of eco-hydrological processes in arid zones

查看全文 作　　者：ZHAO Wenzhi & CHENG GuodongCold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;State Key Laboratory of Frozen Soil Engineering, Chinese Academy of Sciences, Lanzhou 730000, China

出　　处：《Chinese Science Bulletin》索引2002年第47卷第5期,共8页

基　　金：This work was supported by the Knowledge Innovation Project of Cold and Arid Regions Environmental and Engineering Research Institute; the Chinese Academy of Sciences (Grant No. 210049); the National Natural Science Foundation of China (Grant No. 49731 摘　　要：Ecosystem degradation is a common and cardinal environmental problem in arid zones. The change in the eco-hydrological processes is the basic cause responsible for such a problem. The study on the eco-hydrological processes in arid zones has become a forefront and focus of the eco-environmental research. Recent studies on eco-hydrological processes in arid zones show that the primary vegetation pattern and its eco-hydrological effect are of the most stable state of the ecosystem in arid zones. Special water absorption ways of plants in arid zones and the hydraulic lift and reverse hydraulic lift functions of some plants are the key mechanisms to maintain the stability of the ecosystem in arid zones. In the case of water shortage, ensuring ecological water requirement and maintaining proper ecological ground- water table are the prerequisite to keep healthful operation of the ecosystem in arid zones. The paper reviews some advances in the study of eco-hydrological processes in arid zones. It puts 关键词：ARID zone vegetation pattern eco-hydrological effect hydraulic LIFT plant WATER source ecological WATER requirement.

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Review of several problems on the study of eco-hydrological processes in arid zones

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