The administration and management system for comprehensive development of hilly red soil areas--A case study from the experimental region in Qianyan,Jiangxi Province A Study on Systematic Development of Kerrchin Desert--A Case study From Naiman Banner CAVE IN LAND TYPES BY COAL MINING AND THEIRCOMPREHENSIVE UTILIZATION ECOLOGICAL MODEL Evaluation of sustainable development of Dalian Economic and Technological Development Zone based on MuSIASEM theory.