黄土高原90米分辨率坡度因子图(2012年）

黄土高原90米分辨率坡度因子图(2012年），坡度因子是表征地形与土壤侵蚀关系的指标，其定义与USLE（及RUSLE、CSLE）相同。原始数据黄土高原及周边地区的SRTM从http://srtm.csi.cgiar.org/网站获取，数据为ASCII格式，按5°×5°分幅，WGS84坐标；最终数据通过投影转换、图幅拼接、数据重采样、数据裁剪得到。 数据按1:25万地图标准分幅方式划分图幅，用1:25万标准图幅号命名。

90-meter Resolution Slope Factor Map of the Loess Plateau (2012). The slope factor, an indicator characterizing the relationship between topography and soil erosion, adopts the same definition as stipulated in USLE (along with its extended versions RUSLE and CSLE). The original SRTM data covering the Loess Plateau and its adjacent regions was retrieved from the website http://srtm.csi.cgiar.org/. The original data is in ASCII format, partitioned into 5°×5° tiles, and uses the WGS84 geographic coordinate system. The final dataset was produced through a series of processes including projection transformation, map sheet mosaicking, data resampling and spatial clipping. The dataset is divided into map sheets in accordance with the 1:250,000 scale cartographic standard, and named using the corresponding standard sheet numbers.

搜集汇总

背景与挑战

背景概述

该数据集为2012年黄土高原地区90米分辨率的坡度因子图，数据来源于SRTM，经过投影转换、拼接、重采样等处理，适用于区域水文和土壤侵蚀分析。数据按1:25万地图标准分幅，垂直精度16m、水平精度20m，满足科研需求。