长江经济带城市建设用地集约水平分析

Analysis of the intensive level of urban construction land in Yangtze River economic belt

人多地少、土地资源稀缺是我国的基本国情,采用建设占地少、利用效率高的用地方式是国家长期坚持的一项根本方针,集约用地评价对于集约用地具备重要指导作用。本文以长江经济带主要地级市2000~2014年间相关建设用地数据、社会经济数据为基础,从建设用地投入水平、利用程度、产出水平和可持续性4个方面构建建设用地利用评价体系。用主成分分析法,对2001~2005年、2006~2010年和2011~2014年三个时段的建设用地集约水平进行评价并赋分,利用Arcgis软件空间化显示,结果表明:(1)在时间上,长江经济带的城市土地集约利用水平整体呈现上升趋势;(2)空间上,经济带东部城市建设用地集约节约水平总体高于西部;(3)城市建设用地集约水平与经济发展水平呈现明显相关性。对建设用地集约水平评价分析将有助于了解城市土地集约利用空间分异和变化趋势,为未来城市土地优化利用和可持续发展提供依据。

There are more people but less land resources which is one of fundamental realities in our country.Those factors make our country promoting the intensive and economical land-use.The land intensive use assessment plays an important guiding role in land uses.By means of the construction land data and socio-economic data onto the main prefecture-level cities of the Yangtze River economic belt during 2000 to 2014,this paper established the assessment system about intensive construction land use from four aspects:the investment of construction land,the utilization degree of construction land,the output level of construction land and the sustainability.In this paper,we use main factor analysis method to analyze the land use intensity of major cities in the Yangtze River Economic Zone.The time is divided into three periods:2001~2005 years,2006~2010 years and 2011~2014 years then we used software to make score spatial display.This paper analyzed the different level of the urban construction land use in time and space during recent years.The results show that:the urban land intensive use levels have an upward trend in the Yangtze River economic belt;in the eastern part of the economic belt,the intensive level of urban construction land is higher than the western part,and the intensive level of the Yangtze River Delta Region is obviously higher than that of the central and western regions;the intensive level of urban construction land and the level of economic development are positively correlated.The conflict that the number of increasing people can't match the space of construction land is increasing seriously about the economic development.The analysis of the intensive level of construction will help us to understand the spatial differentiation and trend of urbanland intensive use.At the same time it will offer reference to the future urban land use and sustainable development.