基于经济、社会、生态三维视角构建土地利用效益评价指标体系,运用灰色关联方法测度2004—2014年中国土地利用效益水平,并借助于ArcGIS空间分析技术分析其空间异质性及空间演变格局。从时序特征来看,2004—2014年全国土地利用效益波动性提升。从空间特征来看,中国土地利用效益的空间格局存在差异性,但差异日渐缩小;土地利用效益的增减空间分布不均,随着时间的推移,土地利用效益提升省份增加的幅度越来越大,土地利用效益降低省份的下降幅度越来越小;中国土地利用效益空间集聚特征明显,热点主要分布在内蒙古、辽宁和西藏,冷点主要分布在东南沿海地区;土地利用效益的变化也表现出集聚特征,东南沿海与西部地区为中国土地利用效益变化最强烈的集聚区,其土地利用效益变化呈互逆发展态势;中国土地利用效益变化具有明显的政策导向性。
The paper established evaluation indicators for land use efficiency from the aspects of society, economy, resources and environment. A grey related analysis is used to evaluate the land use efficiency in China from 2004 to 2014, and with the help of the ArcGIS, its spatial heterogeneity and spatial pattern of development is also analysed. With the change of time, the national land use efficiency was enhanced instability in 2004—2014. From the view of spatial characteristics, China’ s land use efficiency shows spatial distinction, but the distinction is shrinking. The development of land-use efficiency also shows spatial distinction, and as time goes by, the enhancements are greater but the decreases are shrinking. It is quite obvious that land use efficiency and the change of land use efficiency presented characteristics of agglomeration. The hot spots of China’ s land use efficiency distributed in Inner Mongolia, Liaoning and Tibet. The cold spots of China’ s land use efficiency distributed in southeastern coastal areas. The southeast coast areas and the western areas are the areas of intensive agglomeration, and land use efficiency in those two regions exhibit reciprocal development trend. The change of China’ s land use efficiency has policy orientation.