基于GIS和RS的小江流域景观格局动态变化分析

以小江流域不同时期遥感数据为基础,应用多种景观格局指数,对小江流域的景观格局效应进行了分析与探讨.结果表明,各种土地利用类型的斑块形状都极不规则,而且还呈明显增大趋势；小江流域的景观类型多样性在研究期间呈递增趋势,但增幅不大,同时景观优势度指数则表现出递减趋势,表明该研究区中各景观类型所占比例的差异在不断减小,这从景观均匀度指数上也得到了验证.在各种土地利用类型中,居民点与工矿用地的破碎度最大,草地的破碎化程度最低,这与居民点与工矿用地的分布比较分散有关.

Landscape Pattern and Its Dynamical Changes in Xiaojiang Basin Based on RS and GIS Technique

Based on remote sensing image data in Xiaojiang Basin,the landscape pattern change of Xiaojiang Basin with many landscape pattern indexes was analyzed.The results showed that the patch shape of different land-use types was very irregular and had an obvious increasing trend.In the period,the landscape diversity increased constantly and the dominance index decreased,so it showed the difference of the proportion of each landscape type reduced,and this result was verified by the equality index.In all land-use types,the fragmentation index of town and resident land was the largest,and the index of grassland was the lowest,and it was related with the scattered distribution of town and resident land.