摘要
景观指数是指能够高度浓缩景观格局信息,反应其结构组成和空间配置某些方面特征的简单定量指标。以涑水河流域为例,使用2008年该流域的TM影像,应用RS和GIS技术,并借助Fragstats软件在不同尺度上对12种常用景观格局指数进行了分析。结果表明:(1)PD、ED、LSI、SHAPE-MN、FRAC-MN、CONTAG和AI随粒度的增加呈现逐渐减小的趋势;(2)PAFRAC随粒度增加呈现逐渐上升的趋势;(3)LPI、SHDI和SHEI随粒度的增加呈现的变化趋势比较复杂。
Landscape indices are simple quantitative indicators that can highly concentrated the information of landscape pattern, reflect its composition and certain aspects of characteristics of spatial configuration .In this paper, taking sushuihe watershed as an example, using the TM image in 2008 of this watershed, apply RS and GIS technology,and with the help of Fragstats software we analysis the 12 kinds of usual landscape pattern indices from the different scale. The result shows: (1) PD, ED, LSI, SHAPE-MN, FRAC-MN, CONTAG and AI showed a gradual downward trend With the increasing grain size. (2) PAFRAC showed a gradual upward trend with the increasing grain size. (3) LPI, SHDI and SHEI showed a complicate trend with the increasing grain size.
出处
《中国农学通报》
CSCD
北大核心
2010年第13期396-400,共5页
Chinese Agricultural Science Bulletin
基金
山西省自然科学基金项目"山西省涑水河流域土地覆盖与生态环境演变过程研究"(2008011061-1)资助
关键词
景观指数
粒度效应
涑水河流域
Landscape Indices
grain effect
sushuihe watershed