基于景观格局的广州市边缘区生态压力研究——以番禺区为例  

Study on Ecological Stress in the Urban Fringe of Guangzhou City Based on Landscape Pattern:A Case Study of Panyu District

作　　者：张慧霞[1] 娄全胜[2] 李艳[1] 

机构地区：[1]广东商学院资源与环境学院,广州510320 [2]国家海洋局南海海洋勘察与环境研究院,广州510310

出　　处：《热带地理》2010年第3期221-226,共6页Tropical Geography

基　　金：国家自然科学基金项目(40801236);广东省自然科学基金项目(7300652);广东省科技计划项目(08B060600054)

摘　　要：基于RS、GIS技术和统计分析方法,选取破碎化指数、斑块结合度指数、分形维数3个景观指数和土地利用脆弱性指数构建生态压力指数,以番禺为例从景观尺度研究城市边缘区在城市化梯度上的生态压力空间分异。结果表明:不同用地类型的景观指数在3个梯度区内依人为干扰的强烈程度出现明显的空间分异,生态压力呈现自北向南依次降低的空间分布格局。景观生态压力强弱的分布与区域内土地利用方式和强度具有较高的相关关系,人为干扰是影响景观生态压力扩散的重要原因。With RS, GIS and statistical method, an ecological stress index model is established by selecting landscape fragmentation index, patch cohesion index, fractal dimension index and land use sensitivity index. Spatial disparity of the ecological stress with urbanization gradient at the urban fringe of Panyu district in Guangzhou City is studied. The results show that： the average patch area increases from suburb to exurb. The ratio of artificial landscape decreases and that of natural landscape increases in the direction of urban expasion. The landscape index of different landuse type vary with disturbance intensity of human activity in three gradients. The ecological stress presents a patterns a pattern of decrease from north to south. Its distribution has close correlationship to the regional land-use mode and intensity. Human disturbance plays a dominant role in diffusion of landscape ecological stress.

关 键 词：景观格局 边缘区 生态压力 广州市番禺区 

分 类 号：X820.4[环境科学与工程—环境工程]