基于RS和GIS的城镇化与南四湖生态易损性关系

Relationship between urbanization and ecological vulnerability in the Nansi Lake area based on RS and GIS

城镇建设与扩张是人类社会经济发展到一定阶段的必然过程,但城镇发展会对区域的生态系统产生不可忽视的影响,在脆弱敏感的湿地区域表现尤为突出。该文以山东省南四湖以及周边3个县域为研究对象,以遥感数据为基础,利用GIS技术,分析研究区1987—2010年间的地表覆被变化和生态易损性变化,并通过卫星遥感影像分析城镇景观的变化,探讨城镇化与区域生态易损性的关系。结果表明:1987—2010年间,城镇面积的增长占所有景观有效变化的60%以上,但区域内生态损失度变化最大的景观却是水域和绿地,生态易损性变化最明显的区域是南四湖湖滨地带。

Urban construction and expansion constitute an inevitable process during the social - economic development, but urban development has some adverse impacts on regional ecosystems which cannot be ignored, particularly in fragile and sensitive wetland areas. In this paper, with the Nansi Lake and the surrounding three counties as the study area and on the basis of remote sensing （ RS） data and geographic information system （ GIS） , the authors analyzed the land use and land cover change and the changes of eco-vulnerability from 1987 to 2010 , and investigated the relationship between the urbanization and regional ecological fragility. The results show that, from 1987 to 2010 , the growth of urban areas accounted for more than 60% of the effective regional landscape changes, and the largest regional eco-loss landscapes were water bodies and green fields, with the most obvious changes of ecological vulnerability occurring at the lakeside of the Nansi Lake.