摘要
通过中国省域征收占用耕地的空间特征分析,得知2003～2007年中国征收占用耕地均值的高值区和中值区离散分布在东、中、西部,低值区则集聚分布在中国的西北和东北。运用地统计学中的半变异函数,定量研究了中国省域征收占用耕地空间异质性演变特征。通过研究表明,近年来中国省域征收占用耕地的空间异质性呈增强态势,空间变异由随机因素影响加大。
Through analyzing spatial character of occupying cultivated land for requisition in chinese provinces,it show that high and mid value districts in average value of Chinese occupying cultivated land for requisition discretely distribute in the west,middle and east area,while low value district agglomerates in the northwest and northeast of China.Using semi-variable function in geographic statistics,it studies transferring character of spatial difference of occupying cultivated land for requisition in chinese provinces.It is suggested by the study that spatial difference of occupying cultivated land for requisition is stronger in recent years,and optical factors of spatial difference influence more.
出处
《国土与自然资源研究》
2012年第4期18-20,共3页
Territory & Natural Resources Study
关键词
土地利用
征收占用耕地
空间异质性
半变异函数
land use
occupying cultivated land for requisition
spatial heterogeneity
semi-variable function
