RESEARCH ON SPATIAL MANAGEMENT REGIONALIZATION AROUND LAKES UNDER ECOLOGICAL-ECONOMIC SYNERGY --A CASE STUDY OF AREA AROUND CHAOHU LAKE(EASTERN DISTRICT)

Region around lakes with high ecological sensitivity is facing environment threat that human development brings.Spatial management is adopted to deal with the relationship between development and protection,avoid and reduce negative environmental problems in developmental process,and realize sustainable and healthy development around lakes.Taking Chaohu lake in Chaohu city as a case study,a set of index system of spatial development and functional regionalization around lakes is established,including the ecological environment sensitivity and economic needs degree as 2 class I index,9 classⅡ index,32 classⅢ index.Under the support of GIS,with digital topographic map,land utilization status chart and so on,the basic data and spatial attribute database are established.Then,with 500 m grid for basic evaluation unit,the ecological sensitivity and economic development needs are evaluated,which are diveded into high,medium and low type respectively,and partition layer is also built.Finally,comprehensively considering the ecological sensitivity,economic development demand and support conditions,preferring ecological protection as the principle,the results of spatial management regionalization are ascertained,such as feasible construction zone,moderate feasible construction zone,limitary construction zone,prohibited construction zone.The economic development intensity,density and mode around lakes are discussed,which provides the basis on development and protection around lakes.