晋陕蒙接壤区典型生态过渡带景观变化遥感研究

A Study on Landscape Changes of Ecotone in Contiguous Area of Shanxi,Shaanxi and Inner Mongolia Using Remotely Sensed Data

晋陕蒙接壤区是典型的生态过渡带 ,生态环境具有波动性、脆弱性和敏感性。笔者采用 2个时期遥感影像作为基本信息源 ,在GIS的支持下 ,建立空间信息库 ,选取斑块大小、分维数、形状指数、景观破碎度和景观优势度等指标 ,对景观空间格局的动态变化进行了分析。同时利用马尔柯夫模型对该区的景观要素转换进行了模拟。结果显示 ,1988～ 2 0 0 0年期间 ,该区的景观格局发生了显著变化 。

The contiguous area of Shanxi,Shaanxi and Inner Mongolia is a typical ecological transition zone,and the regional eco\|environmental character is activity feebleness,fragility and sensitivity.By using two\|period remote sensing data as basic information resource and with support of GIS,a spatial information storehouse is built up.Through selecting patches size,fractal dimension,shape coefficient,dominance and fragmentation index,etc,the dynamic development of landscape pattern in this region is analyzed.At the same time,the simulation for transform of landscape element using Markov process had been carried through.The result from 1988～2000 shows that the landscape pattern change is significant,and that the landscape pattern shows a development tendency of fragileness.