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首页> 外国专利> GEOGRAPHIC INFORMATION SYSTEM ASSISTED FLOOD HAZARD MAPPING METHOD IN THE SEVEN (7) RIVER WATERSHEDS OF CENTRAL LUZON AND PANGASINAN

GEOGRAPHIC INFORMATION SYSTEM ASSISTED FLOOD HAZARD MAPPING METHOD IN THE SEVEN (7) RIVER WATERSHEDS OF CENTRAL LUZON AND PANGASINAN

机译：地理信息系统辅助中卢森河和班加斯河七（7）河流域的洪灾危害制图方法

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摘要

The Geographic Information System (GIS) assisted hazard mapping that was integrated in spatial analysts' tool was used in the study to develop a methodology for flood hazard mapping of seven (7) river watersheds in Central Luzon and Pangasinan as a support tool in identifying flood susceptible areas within each watershed. The thematic maps of watersheds elevation, slope, distance to river and its land cover were used to generate the flood hazard maps within each watershed. The flood hazard maps were created by weighing and ranking technique in which each factor was weighted according to their relative importance to each other and to their expected importance in causing floods using analytical hierarchal process or AHP. Results revealed that 11.56 percent of Bucao River Watershed (BRW), 17.20 percent of Santo Tomas River Watershed (STRW), 37.07 percent of Patalan River Watershed (PRW), 78.88 percent of Dagupan River Watershed (DRW), 52.87 percent of Alaminos River Watershed (ARW), 12.15 percent of Morong River Watershed (MRW) and 18.77 percent of Balanga River Watershed (BaRW) were susceptible to flooding.
机译：在研究中，使用了集成在空间分析人员工具中的地理信息系统（GIS）辅助灾害地图，以开发一种方法来对吕宋中部和Pangasinan的七（7）个河流流域进行洪水灾害地图，作为识别洪水的支持工具每个流域内的敏感区域。利用流域标高，坡度，到河流的距离及其土地覆盖等专题图，在每个流域内生成洪水灾害图。洪水灾害图是通过权重和排序技术创建的，其中根据每个因素之间的相对重要性以及使用层次分析法或层次分析法在导致洪水中的预期重要性，对每个因素进行加权。结果显示，布草河流域（BRW）的11.56％，圣托马斯河流域（STRW）的17.20％，巴塔兰河流域（PRW）的37.07％，大沽潘河流域（DRW）的78.88％，阿拉米诺斯河流域的52.87％ （ARW），莫龙河流域（MRW）的12.15％和巴兰加河流域（BaRW）的18.77％易受洪灾影响。

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