基于多源数据的长三角区域国土利用效益分析

Analysis on the Land Use Efficiency of Yangtze River Delta Using Multi-source Data

针对长三角国土利用效益及其提升途径问题,将2015年长三角国土利用经济效益(GDP)和生态效益(ESV)进行空间化表达,并结合热点分析工具,得到GDP和ESV的高低值聚集分布格局,分析长三角国土利用效益空间分异特征及其提升途径。研究结果表明:长三角国土利用效益具有明显空间分异特征,且存在GDPESV双热点区和双冷点区、GDP热ESV冷点区、GDP冷ESV热点区,需有针对性、有重点地实施国土利用效益提升策略。本研究实现了国土利用效益的空间可视化表达,并分析其空间集聚分异特征,可为长三角区域规划、国土综合整治等提供有益参考。

To investigate the land use efficiency of Yangtze river delta,this article spatializs the GDP and ESV data of Yangtze river delta in 2015 at 1km spatial resolution.The spatial clustering and heterogeneity of land use efficiency are explored by hot-spot analysis.Results show that there is obvious spatial variation in land use efficiency of Yangtze river delta.There are regions of high GDP and high ESV,low GDP and low ESV,high GDP and low ESV,low GDP and high ESV respectively.This means specific strategies should be made to improve the land use efficiency of this area.In a word,this article realizes the downscaling refinement of land use efficiency and analyzes the spatial agglomeration and differentiation characteristics of land use efficiency.Approaches and results could be used for urban planning and comprehensive improvement of land use efficiency in Yangtze river delta.