摘要
根据河源市生态本底特色,将研究区划分为极敏感区、高敏感区、中敏感区、轻敏感区、不敏感区5个等级,从建设用地适宜性、水安全与雨洪安全、生物多样性安全三大方面选取了8个具有代表性的因子,采取层次分析法(AHP)、多因子加权叠加算法、取最大值法,结合GIS空间分析技术,对生态敏感性进行综合评价.结果表明,5个敏感等级面积比重分别为25.98%、33.84%、12.78%、19.76%、7.63%.并在生态敏感性分析的基础上,提出了生态功能区划建议,为城市规划、生态控制线划定等提供科学依据.
Abstract
According to ecological background characteristics of the Heyuan City was divided into 5 grades,including extremely sensitive zone,high sensitive zone,middle sensitive zone,sensitive zone,non-sensitive zone.Considering of three aspects from the construction land suitability,water and rain safety,biological diversity,8 representative factors were selected.Using analytic hierarchy process (AHP),multi factor weighted superposition algorithm,maximum value method,and GIS spatial analysis technology,the ecological sensitivity evaluation map was obtained.The proportions of the 5 sensitive zone were 25.98%,33.84%,12.78%,19.76%,7.63%,respectively.On the basis of ecological sensitivity analysis,the suggestions of ecological function region were put forward,which can provide scientific basis for urban planning and ecological control line.
国家科技期刊平台
NSTL
维普
万方数据