基于GIS空间分析的河道淹没范围确定研究  

A Study on the Flood Submerged Area of River Based on Spatial Analysis of GIS

作　　者：李茜楠 鲁显赫 胡洁[1] LI Qiannan, LU Xianhe, HU Jie(The Yellow River Survey and Planning and Design Co.,Ltd.,Zhengzhou Henan 45000)

机构地区：[1]黄河勘测规划设计有限公司

出　　处：《河南科技》2018年第10期101-103,共3页Henan Science and Technology

摘　　要：本文采用重庆市板桥河、河嘴河部分河段水位数据,基于GIS技术,分别使用反距离权重法（IDW）、样条函数法（TS）和普通克里金法（OK）进行空间分析,并利用t检验法对插值精度进行评估.结果表明：GIS的空间分析功能可有效应用到洪水淹没范围计算中,克里金法精度最好,但效率较低;样条函数法模拟淹没范围略大于其他两种方法,对淹没范围划定更加保守、可靠.Based on GIS technology, this paper used the inverse distance weighting method （IDW）, spline function method （TS） and common Kriging （OK） to analyze the water level data of the partial river section of the Banqiao River and the river mouth river in Chongqing, and evaluated the interpolation accuracy by using the t-test method. The results showed that the spatial analysis function of GIS could be effectively applied to the calculation of flood submerged area, the accuracy of ordinary kriging method was best, but the efficiency was lowest; the area of simulated flood scope by spline function method, were slightly bigger than the other two methods,so it’s more reliable.

关 键 词：GIS技术 水位数据 反距离权重法 样条函数法 普通克里金法 

分 类 号：P208[天文地球—地图制图学与地理信息工程]