临汾市土地利用景观格局变化分析

临汾市地处汾河流域的中南部,其间景观格局的变化对市域内的生态环境变化起着重要的作用.本文以1987年和2009年两年的Landsat TM影像为基础数据,在景观生态学原理指导下,利用遥感解译与地理信息系统的技术,结合野外调查GPS核查信息,对研究区的两期遥感影像进行图像处理,并对用地动态和景观要素信息进行提取.随后利用景观格局软件FRAGSTATS,对两个水平年的各类景观要素进行斑块组成结构、面积特征、形状指数、破碎化指数、异质性和空间分布等指标分析.最后,通过对两期景观要素的对比分析,得出临汾市土地利用景观多样性趋于多样化,土地利用景观格局朝着均匀化方向发展,区域内的土地利用景观格局更加趋于合理化.

Analysis on Landscape Patterns of Land-use Change in Linfen City

Linfen city is located on the middle and southern part of Fenhe basin,the change of landscape patterns has an important effect on change of ecological environment.Under the guidance of landscape ecologic theory,using Imagery Interpretation and GIS technique,the Landsat TM images in 1987 and 2009,and the collected field data by GPS,we made an image process on the two periods of remote sensing images in the study area,and extracted the land-use changes and landscape elements.Based on analysis of land-use change,and the support of FRAGSTATS,and a landscape pattern software,we analyzed some indexes in the two years,which include: patchformation,patch feature,shape index,fragmentation index,heterogeneity and spatial distribution,on all kind of landscape element in study area.In the end,according to a comparison analysis on the two periods of landscape elements,the results showed that all kinds of landscape elements including SHDI,LDI,SHEI and UI was significantly improved.