【摘要】 借助GIS技术和洛佩兹曲线、基尼系数等数理统计方法,利用广西1990~2012年3期土地利用类型遥感解译数据,分析广西1990~2012年间土地利用及其平均物种丰富度指数的变化特征。结果表明:林地成为了土地利用流失的主要"源",而建筑用地成为了土地利用流失的主要"汇";1990年、2000年、2012年林地和草地在广西14个地级市的分布比较分散,而耕地、建设用地、水域和未利用地分布比较集中,即某些地级市的这些地类所占的比重比其他地级市的大;由基尼系数知道除了建设用地之外,其他各个土地利用类型的空间分布可认为是分布平均的;平均物种丰富度MSA指数呈持续下降趋势,2000~2012年比1990~2000年的变化趋势大。更多还原

【Abstract】 Based on the GIS technology and lorenz Curve and Gini Coefficient method of mathematical statistics,Land use data of Guangxi Province were derived from interpreting remote sensing images.Three time nodes were selected,namely,1990,2000,2012.The results showed that woodland was the source of land use loss,while construction land was the sink of land use loss. In 1990,2000 and 1990,the distribution of woodland and grassland in the 14 cities in Guangxi are scattered,The cultivated land, construction land, water and unused land distribution is concentrated, that in some places these classes share is greater than other places;Know by Gini Coefficient in addition to construction land, the other the spatial distribution of various land use types can be considered as average distribution;The average species richness index of MSA continue to decline, 2000-2012 is larger than the change trend of 1990-2000.更多还原