快速城市化地区土地生态安全评价——以广东省广州市番禺区为例

摘要

The phenomenon of urbanization has been profoundly influencing the use of land resources and ecological environment.As an area of rapid urbanization,ecological problem of land is becoming more and more serious.This paper selects fifteen indexes closely related to land ecological security of Panyu District,Guangzhou City,from the aspects of nature,economy,and society and analyzes land ecological security of the district from 2005 to 2010 by using the method of principal component analysis.The results of the study show that the condition of land ecological security of Panyu District assumes a tendency of increasing fluctuations in a precarious stage of development,but it is at a safety level on the whole.The ecological environment has been relatively improved.%为了探讨区域土地生态安全状况,从影响土地生态安全的自然、经济、社会3个方面出发,选取了与番禺区土地资源利用密切相关的15个指标,运用主成分分析法对2005-2010年土地生态安全进行定量研究.结果表明,番禺区土地生态安全状况呈现波动变化递增的趋势,处于一个不稳定发展阶段,但总体处于较安全水平,生态环境有所改善.