摘要
在对双鸭山市土地利用状况和生态环境现状分析的基础上,基于"压力-状态-响应"概念框架模型,以土地生态压力、生态状态和生态响应为子系统,共选取了23项指标,构建土地生态安全评价指标体系。采用综合评价法和协调度分析法,对研究区2002—2007年土地生态安全进行定量评价及分析。结果表明,研究区土地生态安全综合评价值在0.2～0.5之间波动上升,土地生态安全处于危险状态,但总体仍呈上升趋势。由此可见,区内土地生态安全水平还有很大的提高空间,并可以通过提高土地生态安全协调度的方式来提高区域土地生态安全。
Land ecological security has an effect on sustainable development of coal resource cities. Based on an analysis of land use and ecological environment in Shuangyashan City, this paper establishes an index system with three sub-systems of land ecological power, land ecological state and land ecological response, using the conceptual framework model of ＂Pressure-Status- Response＂ （P-S-R） and selecting 23 indexes, and then quantitatively evaluates and analyzes the ecological security of land in the city from 2002 to 2007 employing the methods of comprehensive evaluation and coordinated degree analysis. The results indicate that from 2002 to 2007, the ecological security evaluation values of land was between 0.2-0.5 up in the city, the land of ecological security at an unstable state, but the overall status is ascending, implying that there is still much room for improvement of land ecological security level in Shuangyashan City, and that land ecological security can be improved by raising the coordinated degree of land ecological security.
出处
《国土资源科技管理》
2011年第2期46-51,共6页
Scientific and Technological Management of Land and Resources
关键词
土地生态安全
协调度模型
双鸭山市
land ecological security
coordinated degree model
Shuangyasban City
