衡阳市土地利用的生态安全评价

Appraisal of Land Use Eco-Security in Hengyang City

土地资源是人类赖以生存的资本,土地利用生态安全问题也日益被重视。文章以衡阳市为研究区域,依据湖南省和衡阳市统计年鉴数据,采用主成分聚类分析的方法对土地利用生态安全进行评价并分类。结果表明:耒阳市、衡阳县、衡南县、祁东县、常宁市、衡东县属于第一类,生态安全状况较好;衡山县、蒸湘区、雁峰区、珠晖区、石鼓区为另一类,生态安全状况有待改善;南岳区自成一类,生态安全状况较差。据此提出相应的生态安全调控措施与建议。

Land is the indispensable resource that the mankind depend on for existence, therefore, more and more problems of ec- ological safety in land utilization are concerned. In this paper, Hengyang City was taken as the study area. According to the Hunan Statistical Yearbook and Hengyang Statistical Yearbook, principal component analysis and cluster analysis are used in appraising and classifying ecological safety in land utilization. The results show that： Leiyang City, Hengyang County, Heng- nan County, Qidong County, Changning City, and Hengdong County can be divided into the first class, and their ecological se- curity status is best; Hengshan County, Zhengxiang District, Yanfeng District, Zhuhui District, and Shigu District belong to the class whose ecological security status need improving and the ecological security status of Nanyue District is the poorest class. Then the corresponding control measures and proposals for ecological safety are put forward.