红枫湖沿岸土地利用变化与生态风险评估

The analysis of land use change and ecological risk assessment in Hongfenghu Reservoir lakeshore

本文以喀斯特地区典型高原湖泊—红枫湖为研究对象,依据景观生态学及生态风险评价等相关理论,综合运用"3S"技术、野外调查验证和生态风险评价及格局优化等技术手段,从土地利用变化演变及景观尺度上就红枫湖湖岸周围的生态风险进行探讨,定量分析湖岸周围格局演变及生态风险变化特征,针对性地提出湖岸周围格局优化的调控措施。本文对丰富喀斯特地区高原湖区景观生态格局及风险评价的研究内容、指导红枫湖流域及类似高原湖泊流域的生态环境保护及恢复、促进区域可持续发展具有一定的理论价值和实践意义。

This study concerned the land use change and ecologi- cal risk assessment in Hongfeng reservoir, which is a typical plateau lake in karst area. Guiding by theories of modem geography, ecology, landscape ecology and ecology security, and using ＂3S＂technical, this paper discusses the ecological risk in Hongfeng lakeshore range from landscape scales, and quantitative analysis the land use change and landscape pattern change and spatial characteristics in research area, and puts forward regulation measures of landscape pattern optimization. The research enriches the study content of landscape ecology and ecological risk, and is of important theoretical value and practical significances to guild the ecology construction, ecological environmental protection and restoration on Hongfeng lake basin and the similar plateau lakes in karst area, and to promote the sustainable development of society, economy and ecological environment.