TPOA框架在禁牧政策效果评价与优化调控中的应用——以宁夏盐池县为例
王娅(
)
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Application of TPOA framework in the effect evaluation and optimal control of the grazing prohibition policy： A case study in Yanchi， Ningxia， China
Ya Wang()
)
图2. 盐池县草原退化原因
Fig.2. The reason of grassland degradation in Yanchi County
