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

chinese Science Bulletin 2002年第5期47卷 353-360页

作者： zhao wenzhi & cheng guodongcold and arid regions environmental and engineering research institute, chinese academy of sciences, lanzhou 73.000, china State Key Laboratory of Frozen Soil engineering, chinese academy of sciences, lanzhou 73.000, china Cold and arid regions environmental and engineering research institute Chinese Academy of Sciences Lanzhou China State Key Laboratory of Frozen Soil engineering Chinese Academy of Sciences Lanzhou China

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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Integrated study of the water–ecosystem–economy in the Heihe River Basin

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National Science Review 2014年第3期1卷 413-428页

作者： Guodong cheng Xin Li wenzhi zhao Zhongmin Xu Qi Feng Shengchun Xiao Honglang Xiao Cold and arid regions environmental and engineering research institute Chinese Academy of Sciences

The ecological water diversion project in the Heihe River Basin is the irst successful case in china in which the ecological systems in a river basin have been rescued. his project serves as a valuable example for the management of ecosystems in other inland river basins. his paper reviews the integrated studies of the water–ecosystem–economy relationship in the Heihe River Basin and concludes that sustainable development in inland river basins requires the basin to be considered as a whole, with the relationships between the upstream, midstream and downstream areas of the basin coordinated appropriately. Successful development in these basins will be relected in an improved output per cubic meter of water and the implementation of integrated river basin management practices.

关键词： Heihe River Basin water–ecosystem–economy integrated study climate change human activity ecological water diversion

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