广西贵港市生态环境敏感性评价及其空间分布

综合考虑土壤侵蚀、石漠化、生物多样性及生境等因子以及贵港市生态环境的特点,构建生态环境敏感性评价指标体系,采用GIS技术和运用定位定量方法,对贵港市生态环境进行综合评价,为贵港生态环境保护和建设提供依据.研究结果表明:贵港市生态环境敏感地区占总面积的比例高达48.49%,其中极敏感地区占1.75%、高度敏感地区占5.61%、中度敏感地区占25.41%、轻度敏感地区占15.71%.对于这些敏感区域的保护,应该是生态环境保护和建设的重中之重.

A Study on the Assessment of Eco-environmental Sensitivity and Its Spatial Distribution in Guigang City,Gnangxi Zhuang Autonomous Region

Taking comprehensive soil erosion,rocky desertification,biodiversity and environment into consideration,the evaluation system of eco-environment sensitivity for Guigang was constructed.Using GIS technology and the method of combining positioning and quantitative analysis,the synthesized assessment of environment sensitivity of Guigang Was made,which provides strong technical support for the ecological protection and construction of Guigang.The results show:the sensitive areas account for 48.49% of the total land.In the total area of sensitive regions,the very sensitive area account for 1.75%,the highly sensitive area accounts for 5.61%,the moderately sensitive area accounts for 25.41%,and the slighfly sensitive area accounts for 15.71%.The sensitive regions of eco-environment problem identified in this paper should enjoy priority in ecological protection and restoration,and counter-measures should be taken.