基于RS与GIS的广州市森林景观格局时空分异研究

以TM影像和野外调查资料为数据源,基于3S技术对1986-2006年广州市森林空间格局进行动态分析。结果表明:1986-2006年广州市森林景观斑块数量增加,平均斑块面积减小,景观结构破碎化程度有上升趋势,主要表现在:多样性指数、分维数增大,聚集度、均匀度减小,在空间和类型上局部变化不同于整体表现。自然地理条件、人口增长、政府政策是导致景观格局变化及其区域差异的主要驱动力。随着城市扩展、农田开发等人类干扰的不断加剧,森林景观生态环境保护与经济开发之间的矛盾将愈加突出。

Spatial-Temporal Changes of Forest Landscape Patterns in Guangzhou Based on GIS and RS

This paper takes forest landscape pattern changes in Guangzhou city as a case study.Guangzhou is the rapid urbanization zone in China,as well as constructed city with holistic planning.In this paper,the relationship between the process of a typical rapid urbanization and spatial-temporal pattern of forest landscape during the period from 1986 to 2006 was studied.The results showed that the complexity,diversity and fragmentation of landscape structure in Guangzhou gradually increased from 1986 to 2006.The indices of contagion and even were decreased.During these twenty years,the anthropogenic disturbances were the main reasons for inducing the significant changes of forest landscape patterns.The conflict between environment protection and economy development will be more severe with frequent anthropogenic disturbances.