关键词: 空间洛伦茨曲线, 空间基尼系数, 土地利用结构, 遥感

Abstract: In this study, we acquired land use information of the year 2000, 2003 and 2007 by remote sensing (RS) images in Changping District, Beijing. Changping was divided into 2 subregions by the elevation of 150 meters, named as Mountain Ecological Conservation Zone (MECZ) and Plain Economic Development Zone(PEDZ). The results revealed that the cultivated land converted to building took a dominant role in the changes of land use structure of PEDZ; however, the ratio of all kinds was stable in MECZ. The distribution of different land was studied by spatial Lorrenze curves and spatial Gini coefficient. It was found that the spatial distribution of water field and building land was most uneven in 3 periods, which mainly clustered in PEDZ. Both of cultivated land and woodland were more uniform, and unused land was fiercely varied in study period. The cultivated land, woodland and water field became more uniform in 7 years of study period, but building land was converted to be uneven at first and then become uniform, while unused land absolutely not．

Key words: spatial Lorrenze curves, spatial Gini coefficient, land use structure, RS