GIS-based study on the ecological-economic regionalization of Yunyang County in Three Gorges reservoir area
GAO Qun, MAO Han-Ying (Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China).
The frangible eco-environment system in the Yangtze Three Gorges reservoirs area is being threatened by excessive and careless reclamation. Meanwhile, the economic development level of this area is relatively low. The conflict between economic growth and stabilizing the eco-environment system is sharp because of this contradiction. This paper employs GIS (Geographic Information System)-based methods for analyzing human-land interaction and spatial-temporal diversification between complex ecological factors and economic activities. It integrates and utilizes both up-down ecological deduction and down-up economic induction methods to explore the eco-economic regionalization, projection and optimization. We employed Yunyang County in the three Gorges area as a representative case for the discussion. Through the GIS-overlapping analysis of ecological factors, statistical clustering of economic factors and the qualitative amendment of expert knowledge system, we tentatively categorized the eco-economic system in Yunyang County into four eco-economic zones: first, the ecological reconstruction and industrial-agricultural-tourism integration-development zone, it mainly includes the low mountains and bottom glades along the Yangtze river; second, the water-soil maintenance and riverhead self-restraint forest-husbandry zone, which includes areas in the middle mountain ridges of north Yangtze river; third, the ecological optimization and forest-husbandry-tourism zone, which includes areas in the middle mountain ridges of south Yangtze river; and fourth, the ecological conservation and moderate economic development eco-economic zone, which includes most areas in the high and middle mountain ridges of north Yangtze river. According to the principles of sustainable development, the four eco-economic zones should develop ecologically sustainably and economically effectively. All the economic decisions should be aware of the conservation of ecological value, and ecological decisions should consider the economic effectiveness as well. The small-scale study presented in this paper on eco-economic regionalization will provide some insights for large-scale research on ecological-economic-social sustainable development in the Three Gorges reservoir area.
【Fund】： 中国科学院知识创新工程资助项目 ( KZCX2 -SW-31 8-0 3);; 中国科学院地理科学与资源研究所人地系统机理开放研究室青年基金资助项目~~
【CateGory Index】： X171
【CateGory Index】： X171