Dynamic Evolution of Land Ecological Security Based on DPSIR-Grey Correlation Model in Chongqing City

SUN Deliang; ZHANG Fengtai

doi:10.13961/j.cnki.stbctb.2016.05.038

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Dynamic Evolution of Land Ecological Security Based on DPSIR-Grey Correlation Model in Chongqing City

- Dynamic Evolution of Land Ecological Security Based on DPSIR-Grey Correlation Model in Chongqing City
- Bulletin of Soiland Water Conservation Vol. 36, Issue 5, Pages: 191-197(2016)
- 作者机构：
  
  1. 重庆师范大学地理与旅游学院,重庆,400047
  2. 贵州师范学院资源环境与灾害研究所,贵州,贵阳,550018
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.05.038
  CLC：
- Published：2016
- 稿件说明：
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SUN Deliang, ZHANG Fengtai. Dynamic Evolution of Land Ecological Security Based on DPSIR-Grey Correlation Model in Chongqing City[J]. Bulletin of Soiland Water Conservation, 2016, 36(5): 191-197.
DOI：

SUN Deliang, ZHANG Fengtai. Dynamic Evolution of Land Ecological Security Based on DPSIR-Grey Correlation Model in Chongqing City[J]. Bulletin of Soiland Water Conservation, 2016, 36(5): 191-197. DOI： 10.13961/j.cnki.stbctb.2016.05.038.

摘要

[目的] 对重庆市土地生态安全定量化评价做出初步探索，为重庆土地生态安全研究和生态环境建设提供方法借鉴和理论参考。[方法] 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，构建土地生态安全指数对重庆市1997-2012年土地生态安全指数进行评价。[结果] 1997-1998年重庆土地生态安全处于敏感状态，1999-2002年处于较安全状态，2003-2009年处于敏感状态，2010，2011年为不安全状态，2012年为敏感状态。重庆市土地生态安全整体呈现缓慢的下降趋势，形势不容更乐观；重庆市土地生态安全的驱动力生态安全指数和压力生态安全指数呈现出轻微波动的整体下降趋势；状态指数和响应指数呈现整体增长趋势；影响安全指数呈现波动变化状态。[结论] 通过产业结构的调整、环境保护力度及资金投入的加大以及技术的提高，农业生产技术改进，提高森林覆盖率，加强对土地生态安全的响应力度，是重庆市土地生态安全的根本保障。该评价模型和指标体系适用性较强，评价结果较为客观，是土地生态安全评价的可用方法。

Abstract

[Objective] A preliminary exploration on the quantitative evaluation of land ecological security was made in Chongqing City in order to provide support and theoretical reference for land ecological security research and the ecological environment construction.[Methods] Based on the conceptual framework of driving force-pressure-state-impact-response(DPSIR)

land ecological security evaluation index system was established. Grey correlation model was used to give weights for the land ecological security index to evaluate land ecological security of Chongqing City from 1997 to 2012.[Results] The land ecological security showed a gradual downward trend

as it was a sensitive situation during 1997-1998

2003-2009 and 2012

a safe situation during 1999-2002

and a insecurity situation during 2010-2011. The land ecological security index of driving force and pressure fluctuated slightly and showed a downward trend. The state index and response index showed an overall growth trend

while the impact safety index showed a fluctuated change.[Conclusion] The adjustment of industrial structure

environmental protection

and increase of capital investment and the improvement of technology

the improvement of agricultural production

increase of the forest coverage and enhancement of the response of land ecological security

is the fundamental guarantee of land ecological security in Chongqing City. The evaluation model and index system in the present study is reliable and can be used in land ecological security evaluation.

关键词

Keywords

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