长江口北岸土地利用空间结构分析  

Land-Use Spatial Structure Analysis of the North Branch of Yangtze River Estuary

作　　者：李润生[1] 龚忆清[1] 

机构地区：[1]苏州高新区测绘事务所有限公司,江苏苏州215129

出　　处：《现代测绘》2009年第6期33-35,共3页Modern Surveying and Mapping

摘　　要：采用地统计学方法,进行长江口北岸土地利用样本点半变异函数拟合和结构性分析,研究表明:当样本点间距小于61 km时,土地利用样点间的距离越小,空间相关性越大;当样本点间距大于61 km时,区域化变量的空间相关性不存在。长江口北岸土地利用样本点半变异函数拟合的结构系数为0.7左右,表明长江口北岸土地利用样本间的变异更多是由随机因素引起的,土地利用样本间的空间依赖性较弱,但有增强的趋势。Using statistical methods, analysis land use sample semivariogram fitting and structure of the North Branch of Yangtze River estuary, reseowch shows that the spatial correlation is greater , as the land-use distance between points is smaller in the range of 61 kilometers. When sample interval is greater than 61 kilometers, the space-relation of regionalization variables will not exist. The structure factor of land-use sample semivariogram fitting is around 0. 7, which indicated that variation among the land use samples are more caused by random factors, land-use spatial dependence between samples is weak, but the space dependence is trend to enhance.

关 键 词：土地利用/覆盖变化 地理信息系统 地统计分析 长江口北岸 

分 类 号：P285.2[天文地球—地图制图学与地理信息工程] P208[天文地球—测绘科学与技术]