摘要
为评价研究粤北山区土地生态安全现状,选用主成分分析方法,从资源环境压力、土地利用状态和社会经济发展等方面选取了14个指标,以县域行政区划为评价单元构建评价指标体系,对粤北山区土地生态安全进行综合评价。结果表明,粤北山区土地生态安全综合得分为0.477 9,整体处于第Ⅲ级临界安全水平,土地生态安全等级在空间分布上呈西高东低的区域差异;人口密度和经济发展水平是影响粤北山区土地生态安全的主要因素,与土地生态安全等级呈负相关关系。
In order to explore the status of land ecological security in mountainous of northern Guangdong province, 14 indicators from the aspects of resource and environmental pressure, land use status and social economic development were selected by the principal component analysis method, then the evaluation index system with county administrative division as evaluation unit was built to comprehensively evaluate the land ecological security in the mountainous of northern Guangdong province.The results showed that the comprehensive score of land ecological security in the mountainous of northern Guangdong province was 0.477 9, which was in the level Ⅲ, critical safety. The spatial ecological security level of this area showed the regional difference that west was high and east was low in spatial distribution. Population density and economic development level were the main factors affecting the ecological security of mountainous in northern Guangdong province, and have a negative correlation with the level of land ecological security.
作者
马俊伟
MA Jun-wei(College of Public Administration,South China University of Technology,Guangzhou 510641,China)
出处
《湖北农业科学》
2020年第3期48-52,81,共6页
Hubei Agricultural Sciences
关键词
土地生态安全
主成分分析
粤北山区
land ecological security
principal component analysis
mountainous of northern Guangdong province
