川藏交通廊道90m SRTM高程数据（2000）

数据源自雷达地形测绘SRTM产品，下载地址为http://gdex.cr.usgs.gov/gdex/。在下载网站导入川藏交通廊道shp边界，以选择研究区范围的图幅，利用ARCGIS软件合并成一幅。数据的精度90m，格式为栅格数据。数据大小136MB。区域为川藏交通廊道。该数据适用于1:10万的相关地形数据的提取，如坡度、坡向、河道河网等地形因子数据等，作为川藏交通廊道地形分析的基础数据，有助于认识全区的地形地貌特征，对于大区域的灾害风险管理和决策水平具有重要意义。

The dataset is derived from Shuttle Radar Topography Mission (SRTM) products, with the download URL at http://gdex.cr.usgs.gov/gdex/. First, import the shapefile boundary of the Sichuan-Tibet Transportation Corridor on the download website to select the map tiles covering the study area, then mosaic these tiles into a single raster dataset using ArcGIS software.
The dataset has a spatial resolution of 90 meters, a file size of 136 MB, and covers the Sichuan-Tibet Transportation Corridor.
This dataset is applicable to the extraction of relevant topographic data at the 1:100,000 scale, including topographic factor datasets such as slope, aspect, river channels and drainage networks. As the foundational data for topographic analysis of the Sichuan-Tibet Transportation Corridor, it helps to understand the topographic and geomorphic characteristics of the entire region, and is of great significance for improving disaster risk management and decision-making levels in large-scale areas.

搜集汇总

背景与挑战

背景概述

该数据集是2000年川藏交通廊道区域的90米分辨率SRTM数字高程模型，基于雷达地形测绘数据生成，格式为栅格数据，大小为136MB。它适用于1:10万比例尺的地形因子提取（如坡度、坡向），为地形分析和灾害风险管理提供基础数据支撑，可开放获取用于相关研究。