大渡河流域泸定段土地利用景观格局动态研究  

Analysis of Land-use and Landscape Pattern Change of Dadu River in Luding

作　　者：姜兰[1] 何政伟[1] 许辉熙[1] 

机构地区：[1]成都理工大学地球科学学院,四川成都610059

出　　处：《资源开发与市场》2008年第8期680-683,共4页Resource Development & Market

基　　金：四川省杰出青年学科带头人培养计划(编号:06ZQ026-014);四川省学术与技术带头人培养基金(编号:2200319)资助

摘　　要：对泸定县1994年TM影像和2002年ETM+影像进行了数字图像处理和解译,得到两个时期的土地利用景观类型图,通过计算相关景观格局指数,定量研究了土地利用景观格局的纵向变化情况。结果表明:1994—2002年间,研究区以林地的变动为主要特征,8年间林地面积增加7590.395hm2,而草地、耕地和其它土地面积减少,主要是转化为林地,其主要推动力是退耕还林政策的实施,景观破碎化程度增加,多样性和异质性提高,说明整个景观中斑块的分布趋于均匀化。Through digital images processing and remote sensing interpretation on TM image in 1994 and ETM ＋ image in 2002 of Luding County ,the authors could get picture of land utilization and landscape arrangement in two period,and through calculated related landscape pattern indices to quantitative study longitudinal change condition of land utilization and landscape arrangement. The results showed that：From 1994 to 2002,in research area forestland changed to be main characteristics, forestland area increased 7590.395hm^2 in eight years,but grassland,cultivated land and other land area reduced, some of which mainly changed into forestland, which was promoted by policy on returning farmland to forest. The level of landscape fragmentation increased, diversity and heterogeneity of landscape improyed, which showed that in the whole landscape distribution of patches were tend to be homogenizing.

关 键 词：土地利用 景观格局指数 遥感 GIS 泸定县 

分 类 号：F301[经济管理—产业经济]