滇池流域土地资源适宜性评价  

Land Suitability Evaluation in the Dianchi Lake Basin

作　　者：赵世民[1,2] 房晟忠[1] 杨树平[1] 李发荣[1] 王彬[2] 

机构地区：[1]昆明市环境监测中心,云南昆明650228 [2]昆明理工大学,云南昆明650093

出　　处：《地球与环境》2011年第1期80-84,共5页Earth and Environment

基　　金：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(WFLY-2009-1-03);国家水体污染控制与治理科技重大专项(2010ZX07102-006)

摘　　要：建设用地与农用地之间的矛盾是滇池流域土地利用的主要矛盾。针对这一矛盾,运用GIS和遥感(RS)技术、层次分析法(AHP)和专家咨询法,选取了土地利用类型、坡度、海拔、土壤类型等九个关键评价因子对滇池流域土地资源的适宜性进行综合评价。结果表明,滇池流域生态很适宜面积约294.0km2,仅占流域总面积的10.1%;生态较适宜面积约431.3km2,约占流域总面积的14.7%,生态较不适宜和不适宜面积约1654.4km2,约占流域总面积的56.7%,生态很不适宜面积约540.3km2,约占流域总面积的18.5%。在土地适宜性评价的基础上,对流域的人口承载力进行分析,提出了基于流域资源-生态-环境综合考虑下的最佳流域人口数量。The conflict between the construction land use and agricultural land use is the major conflict of land use in the Dianchi Lake basin. Focusing on this problem, nine key factors including land-use type, slope type, altitude and soil type were selected to evaluate the land suitability of the Dianchi Lake basin based on the GIS and RS technologies, analytic hierarchy process （AHP） and expert consultation. The results indicated： （1） The most suitable ecological area is about 294.0 km^2 , only ac counting for 10.1% of the basin＇s total area; （2） the suitable ecological area is about 431.3 km^2, accounting for 14.7% of the total area; （3） the unsuitable ecological area is about 1654.4 km^2 , accounting for 56.7% of the total area; （4） the least suit able ecological area is about 540.3 km^2, accounting for 18.5% of the total area. On the basis of land suitability evaluation, the population-carrying capacity of watershed was analyzed, and the optimum watershed population based on the synthetic consid- eration of resources, ecology and environment was proposed.

关 键 词：滇池流域 土地资源 适宜性评价 人口承载力 

分 类 号：S15[农业科学—土壤学]