HUO Zhen,LI Ya-guang.Study on the Suitability Evaluation of the Human Settlements Environment in Dianchi Lake Basin Based on GIS[J].Research of Soil and Water Conservation,2010,17(01):159-162,187.
基于GIS的滇池流域人居环境适宜性评价研究
- Title:
- Study on the Suitability Evaluation of the Human Settlements Environment in Dianchi Lake Basin Based on GIS
- 分类号:
- X171
- 摘要:
- 以滇池流域为研究单元,从城市湿地环境的角度出发,通过讨论城市湿地对城市人居环境影响的推动和制约效应,分别选取滇池流域自然性和脆弱性两方面的评价指标,运用GIS技术,从区域尺度对滇池流域进行人居环境适宜性评价.结果表明：(1)滇池流域人居环境适宜程度整体呈现出南北两端较差,中部地区较好的分布趋势.(2)高度适宜区主要分布在昆明市周边西山区、五华区、盘龙区和官渡区及环滇池湿地区域,土地面积约为1020km2,约占流域总面积的35%,说明昆明市社会经济发展水平对滇池流域人居环境适宜性有较大影响;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.(3)滇池流域北部及南部地区人居环境适宜性相对较差,农业用地约为33000hm2,占流域总农业用地的68%,磷矿污染程度、土地利用类型、土壤侵蚀强度、地形起伏度及坡度对滇池流域人居环境适宜性都有一定影响.其中,磷矿、采石场等污染源的影响尤为明显,土地利用类型、土壤侵蚀强度次之.
- Abstract:
- From a perspective of urban wetland environment,by taking Dianchi Lake basin as a unit,and discussing the promoting and constraining effects of urban wetland influencing urban human settlements,and choosing both naturality and frangibility indicators in Dianchi Lake basin,based on Geographic Information System technique,this paper evaluates the suitability of human settlements environment in Dianchi Lake basin on the regional scale.The results show:(1) the human settlements environment suitability of Dianchi Lake basin in middle region is better than the north and south areas in general.(2) The high suitable region,with a land area of 1020 km2,accounting for 35% of Dianchi Lake basin’s total,is mainly located in Kunming surrounding areas such as Xishan District,Wuhua District,Panlong District and Guandu District and the region around Dianchi Lake,which indicates that the Social Economic Development Level of Kunming has great influence on the suitability of human settlements environment in Dianchi Lake basin;the ecological service function of Dianchi Lake basin is not obvious,which basically corresponds to the current situation of Dianchi Lake basin.(3) The northern and southern region,with the agricultural land of 33000 hm2,accounting for 68% of this region,of which the human settlements environment suitability in Dianchi Lake basin is relatively worse,which shows that phosphate pollution,land-use types,soil erosion intensity,relief degree of land surface and slope have some effect on the suitability of human settlements environment in Dianchi Lake basin,which the pollution sources such as phosphate rocks and quarries have significant influence especially,followed by land-use types and soil erosion intensity.
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备注/Memo
收稿日期:2009-6-6。
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
作者简介:霍震(1984- ),男,江苏徐州人,硕士研究生,主要研究方向为农业生物环境与能源工程.E-mail:huozhen07@163.com