黄河流域12.5米分辨率地形因子（平面曲率）数据集

数据集为黄河流域地形因子（地形因子（平面曲率））数据，空间分辨率12.5m，数据源来自于美国国家航空航天局(NASA) 的ASF DAAC；数据通过预处理、分幅、投影、镶嵌地形指标计算四个步骤完成；通过严格的质量检查，数据完整性、逻辑一致性、位置精度、属性精度、接边精度、现势性均符合国家测绘局制定的有关技术规定和标准的要求，质量优良可靠。

This dataset is topographic factor (plan curvature) data for the Yellow River Basin, with a spatial resolution of 12.5 meters. Its data source is ASF DAAC under the National Aeronautics and Space Administration (NASA) of the United States. The data was produced through four processing steps: preprocessing, tiling, projection, and mosaic-based topographic index calculation. Strict quality inspections have been conducted, and the data's completeness, logical consistency, positional accuracy, attribute accuracy, edge-matching accuracy, and currency all meet the requirements of relevant technical regulations and standards formulated by the National Bureau of Surveying and Mapping, resulting in excellent and reliable data quality.

搜集汇总

背景与挑战

背景概述

该数据集是黄河流域12.5米分辨率的地形因子（平面曲率）数据，基于NASA的ASF DAAC数据源处理，覆盖2020年。数据通过预处理、分幅、投影和镶嵌计算等步骤生成，采用UTM投影（47-50分带），质量可靠，适用于自然地理学研究。