ZHANG Xiao-yuan,ZHOU Qi-gang,ZHANG Jian-jun.Land Use Ecological Risk Evaluation of the Barrier Area of Three Gorges Reservoir Area in Chongqing Based on Comprehensive Fuzzy Evaluation[J].Research of Soil and Water Conservation,2013,20(06):262-266,301.
基于综合模糊评价的三峡库区屏障带重庆段土地利用生态风险评价
- Title:
- Land Use Ecological Risk Evaluation of the Barrier Area of Three Gorges Reservoir Area in Chongqing Based on Comprehensive Fuzzy Evaluation
- Keywords:
- land use; ecological risk evaluation; comprehensive fuzzy evaluation; the barrier area of three gorges reservoir area
- 分类号:
- F323.211
- 摘要:
- 土地利用变化直接影响生态过程，不同土地利用类型对区域生态风险的影响存在差异。采用三峡库区2007、2010年两期遥感数据、社会数据、经济数据以及环境监测数据，基于PSR模型构建评价指标体系，利用综合模糊评价法建立评价模型，对三峡库区屏障带重庆段土地利用生态风险进行评价。结果表明：三峡库区屏障带重庆段土地利用生态风险总体以中度风险为主，2007—2010年有恶化的趋势，其中长寿、奉节、江津、巫溪、云阳的风险等级在升高；仅有石柱以及巫山两个评价单元的生态风险等级降低。三峡库区屏障带重庆段土地利用生态风险空间由东北向西南逐渐降低。2007—2010年，高风险与较高风险区域扩大，低风险区域消失。研究结果可为三峡库区生态保护提供参考。
- Abstract:
- Land use changes directly affect the ecological processes, the impact of different land use types of regional ecological risk is different. The data sources include the Landsat TM remote sensing data, social and economic data and environmental monitoring data of The Three Gorges Reservoir Area in 2007 and 2010. The evaluation index system was built based on the PSR mode. And the evaluation model was set up by using the method of comprehensive fuzzy analysis to evaluate the land use ecological risks of the Barrier Area of Three Gorges Reservoir Area. The results indicated that the main land use ecological risks of the Barrier Area of Three Gorges Reservoir Area in Chongqing is moderate risk. From 2007 to 2010, the land use ecological risk exacerbated. The land use ecological risk levels of Changshou, Fengjie, Jiangjin, Wuxi, Yunyang increased. And land use ecological risks levels of Shizhu and Wushan reduced. From northeast to southwest, the land use ecological risk gradually reduced. From 2007 to 2010, the area of the highest and higher risks level became more, and low risk area disappeared. The results can offer reference value for land rational use and ecological protection of the Three Gorges Reservoir Area.
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备注/Memo
收稿日期:2013-04-14;改回日期:2013-05-02。
基金项目:国家自然基金项目（41101503）；国家社科基金重大项目（11&ZD161）
作者简介:张晓媛(1990-),女,在读硕士生,主要研究方向:3S理论与应用、土地利用与规划、环境监测与保护。E-mail:xiaoyuan.kul@163.com