基于物元分析-DPSIR概念模型的重庆土地生态安全评价

发布时间：2018-05-08 16:37

本文选题：土地 + DPSIR概念模型　；参考：《中国环境科学》2016年10期

【摘要】：构建基于驱动力-压力-状态-影响-响应(DPSIR)概念框架的土地生态安全评价指标体系,借助灰色关联模型进行赋权,引入物元分析法对重庆市土地生态安全进行评价,研究结果表明:11997年重庆土地生态安全属于不安全等级,2001年属于较安全、2005年属于不安全、2009和2012年属于安全等级,表明1997~2012年重庆市土地生态安全总体呈现转好趋势,但由于关联度均小于0,土地生态安全的水平不稳定;2重庆市土地生态系统脆弱,承载干扰的能力较弱;31997直辖后,经济社会的发展,环境保护意识的提升,政府部门生态环境建设力度和环保投入的加大是重庆市土地生态安全有效提升的保障.人口增加,经济社会以及城市化的快速发展,农业面源污染等是重庆市土地生态安全的制约因素;4该评价模型和指标体系适用性较强,评价结果较为客观,为土地生态安全评价提供了一个方法的参考.
[Abstract]:Based on the concept framework of driving force, pressure, state, influence and response, the evaluation index system of land ecological security is constructed, and the evaluation of land ecological security in Chongqing is carried out with the help of grey relational model and matter element analysis. The results show that: 1the land ecological security in Chongqing belongs to unsafe grade in 1997, relatively safe in 2001, and unsafe in 2009 and 2012 in 2005, indicating that the overall trend of land ecological security in Chongqing has improved from 1997 to 2012. However, because the correlation degree is less than 0, the level of land ecological security is unstable and the land ecosystem of Chongqing is fragile, the ability to carry disturbance is weaker. After 1997, the development of economy and society and the promotion of environmental protection consciousness. The construction of ecological environment of government departments and the increase of environmental protection investment are the guarantee for the effective promotion of land ecological security in Chongqing. Population increase, rapid development of economy, society and urbanization, agricultural non-point source pollution and so on are the restrictive factors of land ecological security in Chongqing. 4. The evaluation model and index system have strong applicability, and the evaluation results are more objective. It provides a method reference for land ecological security evaluation.
【作者单位】：南京大学地理与海洋学院;贵州师范学院地理与旅游学院;贵州省山地资源研究所;
【基金】：国家十二五科技支撑计划项目(2014BAB03B01)
【分类号】：X826

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