Solid waste dumping site suitability analysis using geographic information system (GIS) and remote sensing for Bahir Dar Town, North Western Ethiopia
Solid waste dumping site suitability analysis using geographic information system (GIS) and remote sensing for Bahir Dar Town, North Western Ethiopia
复制标题
利用地理信息系统 (GIS) 和遥感技术对埃塞俄比亚西北部巴赫达尔镇固体废物倾倒场适宜性进行分析
DOI：
10.5897/ajest2013.1589
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
A. S. Minale
中科院分区：
文献类型：
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作者：
T. A. Ebistu;A. S. Minale
固体废物倾倒在城市地区是一个严重的问题，因为大多数固体废物没有倾倒在合适的地区。巴希尔达尔镇存在固体废物堆放场标识问题。这项研究的主要目的是为巴希尔达尔镇选择环境适宜的固体废物倾倒场的潜在区域。主要数据为空间分辨率为5 m的SPOT影像、空间分辨率为30 m的数字高程模型（DEM）、地面点测量（GPS）采集的地面控制点（GCP）和研究区地形图。这些地图是通过地理信息系统（GIS）、遥感技术和多标准分析方法的叠加和适宜性分析编制的。最后的适宜性地图是通过对Arc地图的叠加分析来制作的，并将研究区划分为高、中等、较不适宜和不适宜区域。结果表明，65%的研究区不适合固体废物倾倒，1.3%的不太适合，21.8%的中度适合，11.9%的最适合。固体废物倾倒场的潜在最合适的区域落在城镇的南部和东南部，那里的环境和健康风险最小。GIS和遥感技术是固体废物选址的重要工具。因此，利用地理信息系统和遥感技术有效确定适当的固体废物倾倒场的能力将最大限度地减少环境风险和人类健康问题。关键词：倾倒区，地理信息系统，遥感，多指标分析，固体废物，权重叠加。
Solid waste dumping is a serious problem in the urban areas because most solid wastes are not dumped in the suitable areas. Bahir Dar Town has the problem of solid waste dumping site identification. The main objective of this study was to select potential areas for suitable solid waste dumping sites for Bahir Dar Town, which are environmentally suitable. The main data used for this study were spot image with a spatial resolution of 5 m; digital elevation model (DEM) with 30 m spatial resolution, and ground control point (GCP) collected by ground point survey (GPS) and topographical map of the study area. The maps were prepared by overlay and suitability analysis of geographic information system (GIS), remote sensing techniques and multi criteria analysis methods. The final suitability map was prepared by overlay analyses on Arc map and leveled as high, moderate, less suitable, and unsuitable regions of the study area were determined. The results indicate that 65% of the study area is unsuitable for solid waste dumping; 1.3% less suitable; 21.8% moderately suitable; and 11.9% most suitable. The potential most suitable areas for solid waste dumping sites fall on southern and south eastern part of the town where there are least environmental and health risks. The GIS and remote sensing techniques are important tools for solid waste site selection. Hence, the capacity to use GIS and remote sensing technology for the effective identification of suitable solid waste dumping site will minimize the environmental risk and human health problems. Key words : Dumping site, geographic information system (GIS), remote sensing, multi criteria analysis, solid waste, weight overlay.