老挝沙湾水经济区土地利用适宜性评价

Research on land use suitability evaluation: A case study of Savan water economic zone in Laos

基于老挝沙湾水经济区的自然、社会、经济发展状况和土地利用现状,将层次分析法、特尔菲法和Arc GIS地理空间分析技术相结合,对研究区农业用地、林业用地和建设用地的适宜性进行评价。通过单因子适宜性和综合适宜性评价,提出不同区域的土地利用空间优化配置方向。研究结果表明,农业用地主要适宜分布在研究区西侧湄公河沿岸土壤较肥沃的地区;林业用地适宜分布在研究区北部及东南山区;建设用地适宜分布在沙湾水经济区西南部基础设施条件较好且地形较平坦的地区。本研究为老挝沙湾水经济区土地利用提供了一定的数据支持,同时能够为东南亚同类地区的相关研究提供借鉴和参考。

In view of the situation of the natural condition,social environment,economic development,and land use status in Savan water economic zone in Laos,a land use suitability evaluation was carried out in this paper.The suitability of the agricultural land,forest land,and construction land in the study area was evaluated by integratedly using the analytic hierarchy process method,Delphi method,and ArcGIS spatial analysis technology.Through the evaluation of single-factor suitability and comprehensive suitability,the spatial optimal allocation direction of land use was proposed.The results show that it is suitable to allocate agricultural land in fertile regions along the Mekong River which is located in the west of the study area.The forest land is suitable to be allocated in the northern and southeastern mountainous regions of the study area.The construction land is suitable to be allocated in the flat regions with well-developed infrastructures,which are located in the southwest of Savan water economic zone.This study can provide data support for the land use allocation in Savan water economic zone,Laos.Furthermore,the research findings also provide experience and references for land use allocation in similar regions in Southeast Asia.