<正>城市化过程直接改变了城市区域的景观结构,引发了许多自然现象和生态过程的变化。利用3期的TM图像,运用核心景观指数研究南京市自1985年以来景观格局的动态演变规律。结果表明:南京市在快速城市化的过程中,城市景观结构的变化主要表现为耕地、草地、林地、水体等自然或半自然景观向城市、农村居民地、工矿用地以及交通用地等人文景观转变;景观的多样性增加,斑块的平均面积增大,破碎度和孔隙度减小,城市的开发趋向有序化、规模化。

Urbanization has changed the landscape structure of urban and resulted in lots of natural phenomena and ecological processes worsen.This paper studied the dynamical change of landscape pattern of Nanjing city since 1985 by using GIS and major landscape index with Landsat TM imageries in 1985,1995 and landsat ETM~+ in 2000.The results showed that landscape structure of Nanjing changed dramatically in the course of rapid urbanization.The natural and semi-natural landscape such as cultivated land,greenbelt,water and unused land became man-made landscape.In general,landscape diversity and average area of the patches increased.Fragmentation F_i,separation N_i,and lacunarity A(r) decreased.The urban exploitation tends to regulation and rationalization.