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JOURNAL OF DESERT RESEARCH ›› 2017, Vol. 37 ›› Issue (4): 678-688.DOI: 10.7522/j.issn.1000-694X.2016.00163

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Significance of Eco-hydrological Threshold in Artificial Vegetation Ecosystem Management in China Desert Area

Zhang Dinghai1,2, Li Xinrong2, Zhang Peng2   

  1. 1. Center for Quantitative Biology, College of Science, Gansu Agricultural University, Lanzhou 730070, China;
    2. Shapotou Desert Research and Experimental Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
  • Received:2016-09-30 Revised:2016-12-05 Online:2017-07-20 Published:2017-07-20

Abstract: The desert area in northern China,under wind-blown sand hazards and with desertification development and ecological degradation,is one of the most serious areas in the word.Using plant sand-fixation is the main approach to contain the expansion of sandy land and to recover and rebuild the ecological environment.However,the stability maintenance of artificial vegetation is a challenge of sustainable management of sand hazards.As the basis for artificial vegetation ecosystem management,how to understand and define the eco-hydrological threshold has important theoretical and practical significance.We built an eco-hydrological model to describe the interaction effect between the deep soil moisture and the coverage of artificial sand-binding shrub or trees (for only eastern desert regions).We used the model to simulate the eco-hydrological process in the typically artificial sand-binding vegetation ecosystem of different climate zones of China desert.Based on these results,we defined the appropriate eco-hydrological threshold of artificial vegetation ecosystem management in different sandy areas.It has a certain reference value to the ecosystem management of existing sand-binding vegetation and future vegetation construction in desert areas.

Key words: desert area in northern China, artificial sand-binding vegetation, soil water balance, stability of sand-binding vegetation, eco-hydrological threshold, ecological reconstruction

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