Spatial-temporal Changes in Ecological Risk of Land Use before and after Grain-for-Green Policy in Zhengning County, Gansu Province
SHEN Jianxiu, WANG Xiuhong
Journal of Resources and Ecology ›› 2013, Vol. 4 ›› Issue (1) : 36-42.
Spatial-temporal Changes in Ecological Risk of Land Use before and after Grain-for-Green Policy in Zhengning County, Gansu Province
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