As society and technology develop, the impact of human activity on natural environment has widened and intensified, resulting in severe eco-environmental problems. Sensitivity analysis for regional eco-environment is of significance to planning eco-environmental protection and guiding regional ecological construction work. With the segment from Wushan to Fengjie in Three Gorges Reservoir Area as study area, the sensitivity evaluation models of single factor, namely geological disaster, rocky desertification, and soil erosion, were established. The weight of each factor was determined through analytic hierarchical process, and the comprehensive evaluation results of ecological sensitivity were further obtained through weighted summation. With the support of RS and GIS technology, the spatial distribution of ecological sensitivity was superposed on the administrative map of the study area for statistical analysis. Results revealed that insensitive areas, slightly sensitive areas, moderately sensitive areas, highly sensitive areas and extremely sensitive areas comprise 7.55%, 40.75%, 45.21%, 6.31% and 0.18% of the whole research region, respectively. Highly sensitive areas and extremely sensitive areas mainly distributed in Kangping town, Yong’an town, Wuxia town, Kangle town, Daxi town, Zhuyi town and Hefeng town. These towns are easily subjected to eco-environmental problems when affected by improper human activities, and hence should be the focuses of eco-environmental protection and restoration.
Key words
Three gorges reservoir area /
ecological environment /
sensitivity evaluation /
soil erosion /
rocky desertification /
geological disasters /
remote sensing
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] 刘 康, 欧阳志云, 王效科, 等. 甘肃省生态环境敏感性评价及其空间分布[J] . 生态学报, 2003, 23(12):2711-2718.
[2] 贾良清, 欧阳志云, 赵同谦, 等. 安徽省生态功能区划研究[J] . 生态学报, 2005, 25(2):254-260.
[3] 刘 康, 徐卫华, 欧阳志云, 等. 基于GIS的甘肃省土地沙漠化敏感性评价[J] . 水土保持通报, 2002, 22(5):29-31.
[4] 陈建军, 张树文, 李洪星, 等. 吉林省土壤侵蚀敏感性评价[J] . 水土保持通报, 2005, 25(3):49-53.
[5] 张征云, 孙贻超, 孙 静, 等. 天津市土壤盐渍化现状与敏感性评价[J] . 农业环境科学学报, 2006, 25(4):954-957.
[6] 颜 磊, 许学工, 谢正磊, 等. 北京市域生态敏感性综合评价[J] . 生态学报, 2009, 29(6):3117-3125.
[7] 刘军会, 高吉喜, 马 苏, 等. 内蒙古生态环境敏感性综合评价[J] . 中国环境科学, 2015 35(2):591-598.
[8] BRIMBLECOMBE P, PFISTER C, WALTER F. The Evolution of Environmental Sensitivity 1750-1950[M] . Heidelberg: Springer, 1990: 231-247.
[9] REN D, LESLIE L M, KAROLY D J. Sensitivity of an Ecological Model to Soil Moisture Simulations from Two Different Hydrological Models[J] . Meteorology and Atmospheric Physics, 2008,100(1/2/3/4):87-99.
[10] HORNUNG M, BULL K R, CRESSER M, et al. The Sensitivity of Surface Waters of Great Britain to Acidification Predicted from Catchment Characteristics[J] . Environmental Pollution, 1995,87(2):207-214.
[11] MAJUMDER M, BARMAN R N, MAJUMDER M, et al. Impact of Climate Change on Ecological Sensitivity of Wetlands[M] . Netherlands: Springer, 2013:159-176.
[12] TAO F, FENG Z. Terrestrial Ecosystem Sensitivity to Acid Deposition in South China[J] . Water, Air, and Soil Pollution, 2000,118(3/4):231-244.
[13] 张伟东, 王雪峰. 辽宁省生态功能区划研究[J] . 中国农业资源与区划, 2007, 28(2):58-62.
[14] 戚 鹏, 张 冉, 高太忠, 等. 河北省生态系统敏感性评价研究[J] . 河北农业大学学报, 2009, 32(3):135-140.
[15] 刘 青, 范建容. 长江上游生态系统土壤保持重要性评价及分区[J] . 长江科学院院报, 2012, 29(11):22-27.
[16] 周伏建, 黄炎和. 福建省降雨侵蚀力指标R值[J] . 水土保持学报, 1995,9(1):13-18.
[17] 岑 奕, 丁文峰, 张平仓. 华中地区土壤可蚀性因子研究[J] . 长江科学院院报, 2011, 28(10):65-68.
[18] 王朋伟, 牛瑞卿, 江齐英, 等. 三峡库区奉节到巴东段石漠化分布及驱动因子分析[J] . 长江科学院院报, 2012,29(6):6-11.
[19] SUN D, ZHANG J, HU Y, et al. Spatial Analysis of China’s Eco-environmental Quality: 1990-2010[J] . Journal of Geographical Sciences, 2013,23(4):695-709.
[20] 刘春霞, 李月臣, 杨 华. 三峡库区(重庆段)石漠化敏感性评价及空间分异特征[J] . 长江流域资源与环境, 2011, 20(3):291-297.
[21] 王佳佳, 殷坤龙, 肖莉丽. 基于GIS和信息量的滑坡灾害易发性评价——以三峡库区万州区为例[J] . 岩石力学与工程学报, 2014, 33(4):797-808.
[22] 常 健, 张志军, 王君莉. 三标度模糊层次分析法在桥梁安全评估中的应用[J] . 中国安全生产科学技术, 2014, 10(8):156-161.
[23] 贾玉洁, 马 欣, 石金泉, 等. 基于层次分析法的矿山爆破飞石伤人事故风险分析[J] . 安全与环境工程, 2011, 18(1):41-44.
PDF(2481 KB)
