A small watershed is the basic geographical and ecological unit on the Loess Plateau of China,and healthy ecosystem in a small watershed is the foundation of the sustainable development of this region.In this paper,firstly,the definition of ecosystem health in a small watershed was given,then,the method and principle of the assessment indicator system were discussed,and finally,five factors(including vigor,organization structure,resilience,service functions of ecosystem and human health) were chosen to buil...
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