摘要
在GIS技术支持下,利用三峡库区五桥河流域1992年和2004年土地利用图,在土地利用图基础上编制景观类型图,建立景观类型转移矩阵,揭示各景观类型相互转化的方向及面积;运用景观生态学基本原理,在GIS和景观格局分析软件的支持下,通过选取和计算景观格局指数,分别从景观和景观类型两水平对流域12年来的景观格局变化进行定量研究。分析结果表明:研究区在12年间景观类型主体没有显著变化,仍然以耕地和林地为主;除建设用地增加幅度和水田减少幅度较大外,其它景观类型面积变化不大;景观整体形状复杂性增强,斑块间离散度增大,景观向着多样化、均匀化发展。
By using GIS,the map of landscape patterns has been charted based on the land use classification obtained in 1992 and 2004.The changes of landscape patterns in Wuqiaohe watershed from 1992 to 2004 have been analyzed using GIS and FRAGSTATS.The results showed：1）there was no significant change of the main landscape pattern during the 12 years;2）the area of landscape patterns has little change except that the area of construction land increased greatly,and the area of paddy field decreased greatly;3） the shape of landscape pattern was more irregular;the isolation index of landscape pattern strengthened,and both of the diversity and evenness increased.
出处
《三峡环境与生态》
2010年第5期1-5,25,共6页
Environment and Ecology in the Three Gorges
基金
中国科学院知识创新工程重大项目"重大工程生态环境效应遥感监测与评估"
中科院成都山地所前沿项目(1100001007)
中科院西部行动计划项目(KZCX2-XB2-07)
国务院三建委办公室资助项目(SX2001-021)
关键词
三峡库区
五桥河
景观格局
GIS
Three Gorges Reservoir area
Wuqiaohe watershed
landscape patterns
GIS
