基于RS和GIS的成都市郊区景观格局分析

将遥感影像经过纠正和增强后,采用自动分类和目视判读结合的方法获取了成都市郊区的景观类型分布信息;通过选择分析指标,对研究区景观格局指数进行了分析.结果表明:成都市郊区生态环境处于比较良好的状态,总体景观格局由少数景观类型占主导地位.成都市郊区各区县间生态环境存在一定的差异;双流县和温江区保持了良好的景观多样性,而龙泉驿区和青白江区景观相对比较单一;郫县和温江区景观由少数类型占主导地位比其他区县突出;在景观分布形式上,双流县和新都区景观成片分布现象也比其他区县严重;各区县人类活动对景观格局影响也不相同,其中双流县景观受人类活动影响最大,自然生态环境受到极大破坏,而青白江区和龙泉驿区的自然生态环境得到较好的维护.

On Landscape Pattern in Chengdu Suburb Based on RS and GIS

Chengdu suburb was taken as the studied area, the information of landscape pattern was obtained by the methods of auto-classification and the visual interpretation after the correction and enhancement of remote sensing images, and then the landscape pattern indexes of studied area were analyzed after the selection of the analytical indexes. The results indicated: the general ecological environment was at a well state; few landscape types occupied the dominant position in general landscape pattern, particularly in Pi and Wenjing counties; there were some differences in the ecological environment among different counties; landscape diversity maintained well in Shuangliu and Wenjiang counties but unitary in Longquanyi and Qingbaijiang counties; landscape distribution in large area was more obvious in Shuangliu and Xindu counties; the influence intensity of human activities on landscape pattern was different among different counties, Shuangliu county was influenced most and its ecological environment was destructed acutely, while the ecological environment in Qingbaijiang and Longquanyi counties were protected well.