基于GIS的广西溪河洪水型山洪沟空间分布特征  

The Spatial Distribution Characteristics of River-Flood Type of Mountain Torrents Ditches in Guangxi Based on GIS

作　　者：莫建飞[1,2,3] 钟仕全[1,2,3] 罗永明[1,2] 黄永璘 陈燕丽[1,2,3] 孙明[1,2] 

机构地区：[1]广西气象减灾研究所,南宁530022 [2]国家卫星气象中心遥感应用试验基地,南宁530022 [3]广西高校西江流域生态环境与一体化发展协同创新中心,南宁530022

出　　处：《气象研究与应用》2015年第2期96-99,共4页Journal of Meteorological Research and Application

基　　金：广西科学研究与技术开发计划项目资助(桂科攻1355010-9;桂科攻14124004-4-9)

摘　　要：在GIS技术支持下,以DEM、水系、山洪灾害隐患点等地理信息为基础数据,依据流域划分原理与方法,提取广西溪河洪水山洪沟边界,根据山洪沟流域面积、主沟长度、河床比降等流域属性特征,划分溪河洪水山洪沟类型,基于行政区域、地形地貌类型、已发生灾害次数,分析广西溪河洪水型山洪沟空间分布特征,结果表明,按地域,广西溪河洪水型山洪沟主要分布在桂西北的百色市、桂北的河池市、桂东北的桂林市;按地形,广西溪河洪水型山洪沟主要分布在低山、丘陵、平原地区,中山、喀斯特石山分布较少。Based on the geographic information data, like： DEM, drainage, mountain torrent disaster risk points and the GIS, the border of river-flood type of mountain torrents ditches were extracted by watershed division principle and method. According to the basin attribute characteristics, such as： mountain torrent valley area, main gully length and bed gradient, such as division of the type of river- flood mountain torrents ditches. The spatial distribution features were analyzed on the basis of administrative areas, landform type, and number of disaster. The results show that, according to the region, the river-flood type of mountain torrents ditches of Guangxi are mainly distributed in Baise, Hechi and Guilin. But, based on the terrain, the mountain torrents ditches are mainly distributed in low mountains, hills, plains and Middle Mountain, and less in the Stone Mountain karsts.

关 键 词：溪河洪水 山洪沟 地理信息系统 广西 

分 类 号：P954[天文地球—自然地理学]