Jieba region which is located in ecotone between agriculture and animal husbandry, has its unique ecosystem vulnerability. It's the ecological barrier and an important water source area for Beijing and Tianjin. Meanwhile, It's also the major sand source area and sand channel of Beijing-Tianjin area. Due to the special geology geomorphology and natural conditions along with long-term excessive reclamation and over grazing, the ecological environment of this region became worse and worse. This is a serious th...
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