| 基于DPSIR-灰色关联模型的重庆市土地生态安全评价 |
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| 引用本文： | 孙德亮,张凤太.基于DPSIR-灰色关联模型的重庆市土地生态安全评价[J].水土保持通报,2016,36(5):191-197. |
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| 作者姓名： | 孙德亮 张凤太 |
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| 作者单位： | 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 |
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| 基金项目： | 国家自然科学基金项目“喀斯特城市边缘带土地利用/覆盖变化及其环境效应”（41261038）；国家自然科学基金项目“基于复杂网络聚类的应急救援中心动态选址优化研究”（41271411）；重庆市自然科学基金“基于复杂网络的最优减灾理论与方法研究”（cstc2013jcyjA40047） |
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| 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。
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| 关 键 词： | 土地 DPSIR 灰色关联 生态安全 重庆市 |
| 收稿时间： | 2016/3/20 0:00:00 |
| 修稿时间： | 4/9/2016 12:00:00 AM |
Dynamic Evolution of Land Ecological Security Based on DPSIR-Grey Correlation Model in Chongqing City |
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| SUN Deliang and ZHANG Fengtai.Dynamic Evolution of Land Ecological Security Based on DPSIR-Grey Correlation Model in Chongqing City[J].Bulletin of Soil and Water Conservation,2016,36(5):191-197. |
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| Authors: | SUN Deliang and ZHANG Fengtai |
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| Institution: | School of Geography and Tourism, Chongqing Normal University, Chongqing 400047, China and Institute of Environment, Resources and Disaster, Guizhou Normal College, Guiyang, Guizhou 550018, China |
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| 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. |
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| Keywords: | land DPSIR framework grey correlation ecological security Chongqing City |
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