空间粒度变化对景观格局指数的影响--以徐州地区为例  

Effects of changing grain size on landscape indices——A case study of the part of Xuzhou

作　　者：周兴东[1,2] 于胜文[1] 赵长胜[2] 曹后龙[2] 

机构地区：[1]山东科技大学地球信息科学与工程学院,山东青岛266410 [2]徐州师范大学测绘学院,江苏徐州221116

出　　处：《测绘科学》2009年第1期201-202,173,共3页Science of Surveying and Mapping

基　　金：江苏省高校自然科学基金资助项目(06KJD420184)

摘　　要：以TM遥感图像为数据源,选择徐州地区一块441km2的研究区,应用地理信息系统技术处理得到该研究区的景观遥感类型图,选取10个景观水平的景观格局指数,利用景观格局分析软件FRAGSTATS3.3进行计算,分析了不同粒度对景观格局指数计算结果的影响。结果表明:随着粒度值由30m到480m的逐渐增加,除丰富度外的景观指数均具有明显的粒度效应。从而对该地区景观格局特征的评价提供了可靠的依据。A landscape type map based on remotedly sensed data were computed for a 441km^2 region of the study area of Xuzhou with the help of TM image data and GIS, the landscape pattern analysis package FRAGSTATS3.3 was used to compute the 10 selected landscape metrics and the effects of different grains on the calculation result of landscape pattern index were analyzed. The result show that all the landscape indices have obvious grain size effects except patch richness index with the grain increased from 30m to 480m , So as to provide a reliable basis for the evaluation of the characteristics of the landscape pattern in the region.

关 键 词：景观格局 空间粒度 FRAGSTATS TM影像 

分 类 号：P208[天文地球—地图制图学与地理信息工程]