| GIS支持下滇池流域生态环境敏感性评价 |
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| 引用本文： | 霍震,李亚光.GIS支持下滇池流域生态环境敏感性评价[J].林业调查规划,2009,34(5):12-16. |
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| 作者姓名： | 霍震 李亚光 |
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| 作者单位： | 北京林业大学水土保持学院,北京,100083 |
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| 基金项目： | 国家环境保护部《全国重点湖泊水库生态安全调查与评估》项目 |
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| 摘 要： | 针对滇池流域存在的主要生态环境问题,选取坡度、地形起伏度、土地利用类型、土壤侵蚀强度和磷矿污染程度共5类关键性因子作为评价指标,运用GIS技术进行生态敏感性综合评价.结果表明,滇池流域生态敏感性在空间分布上呈显著差异性,低敏感区主要分布在昆明市周边西山区、五华区、盘龙区和官渡区及嵩明县部分地区,土地面积约为1062 km2,约占流域总面积的36.39%,土地利用类型多为林地、草地,生态环境较好;滇池湿地生态服务功能不明显,基本符合滇池污染严重的现状,中敏感区土地面积约为1374 km2,约占流域总面积的47.05%;高敏感区的分布主要受到磷矿、采石场等污染源的影响,土地面积约为484 km2,约占流域总面积的16.56%.
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| 关 键 词： | GIS 生态敏感性 生态环境 滇池流域 |
Evaluation on Ecological Sensitivity of Dianchi Lake Basin based on GIS |
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| HUO Zhen,LI Ya-guang.Evaluation on Ecological Sensitivity of Dianchi Lake Basin based on GIS[J].Forest Inventory and Planning,2009,34(5):12-16. |
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| Authors: | HUO Zhen LI Ya-guang |
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| Institution: | School of Soil & Water Conservation;Beijing Forestry University;Beijing 100083;China |
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| Abstract: | Focus on major ecological problems in Dianchi Lake basin,the paper selected 5 key factors including slope grade,relief degree,land use type,soil erosion intensity and phosphate pollution to evaluate ecological sensitivity based on GIS.The results indicated:(1) The spatial distribution of ecological sensitivity of Dianchi Lake Basin was significantly differently;(2) The low sensitive zone,with an area of 1 062 hm2,accounting for 36.39% of the basin's total,was mainly located in Kunming surrounding areas such... |
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| Keywords: | GIS ecological sensitively ecological environment Dianchi Lake basin |
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