Organic Polymer Materials Applied in Desertification Control Key technology & strategy for optimizing water environments in lake catchments from point of view of substance circulation and balance Study on the Technique Development of Desertification Control and Sandy Desert Industry in Ningxia Extricate Ourselves from the Dilemma of Desertification Control and Return of Reclaimed Farmland(to Afforested Area) Desertification Control Regionalization and Rehabilitation Countermeasures of Source Area of the Sand and Dust Endangering Beijing-Tianjin Progress in feedback mechanism between desertification and climate change Effect of Afforested Shrubs on Ground-Dwelling Arthropod Diversity and Throphic Structure in Desertified Grassland Ecosystems