长江经济带土地开发均衡度及限度评价研究

基于长江经济带11个省市2005~2015年土地变更调查数据,从土地开发均衡度和土地开发限度两方面对该地区的土地开发强度进行综合评价。研究表明:(1)长江经济带各省市土地均衡度呈现两极分化,东部和西部地区土地开发失衡,中部地区土地开发相对均衡;(2)长江经济带整体土地开发限度为5.58%,11省市均超过或临近极限值,未来需建立集约型土地开发模式;(3)长江经济带不同地区的土地开发强度差异显著,呈现出下游高上游低,东部高集聚的空间格局。因此,应参考各省市土地开发限度对规划进行修编;增强土地供给能力,为建设用地紧张地区挖掘新的开发潜力;建立跨区域的土地开发体制等,通过完善政策法规促进土地的合理开发利用。

ASSESSMENT OF THE EQUILIBRIUM DEGREE AND LIMITATION DEGREE OF YANGTZE RIVER ECONOMIC BELT'S LAND DEVELOPMENT

Based on the land change survey data from 2005-2015 of 11 provinces of the Yangtze River economic belt zone,this study comprehensively assesses the land development intensity of this district from two aspects of land development equilibrium degree and land development limit.It shows that:(1) The equilibrium degree of land development in the Yangtze River economic belt presents polarization;Land development in eastern and Western Regions is lopsided;Land development in Central China is relatively balanced.(2) The land development limitation of the Yangtze River Economic Zone is 5.58％,and all provinces exceed or close to the limit value,so intensive land development model should be established in these areas in the future.(3) There are significant differences of land development intensity in different regions of the zone,presenting a spatial pattern which is high in lower reaches and low in upper reaches,and high concentration in the east.Therefore,the land planning should be revised according to the land development limitation of each province;strengthen the land supply capacity to exploit new development potential in these areas whose construction land is inadequate;establish cross-region land development system,and exploit and utilize land more rational through improving policies and regulations.