黄河流域12.5米分辨率水文分析（河流网络）数据集

数据集为黄河流域水文分析（河流网络）数据，空间分辨率12.5m，包含22个分幅数据。该数据集以ALOS 12.5 m分辨率的DEM数据作为基础数据，借助ArcGIS软件水文分析工具提取了黄河流域河流网络数据。依据D8算法以确定水流方向，通过汇流累积量的计算和相关阈值的设定提取的河流网络。该数据集反映了水系的空间分布，可用于黄河流域数字水文模型的构建、气候预测、环境变化评估等方面，为研究黄河流域生态环境、水文水资源提供水文数据支撑。

This dataset is hydrological analysis (river network) data for the Yellow River Basin, with a spatial resolution of 12.5 m and comprises 22 tiled datasets. It is developed using 12.5 m resolution ALOS DEM data as the foundational source, and the river network of the Yellow River Basin was extracted via the hydrological analysis tools integrated in ArcGIS software. Flow direction was determined using the D8 algorithm, followed by calculation of flow accumulation and setting of relevant thresholds to extract the river network. This dataset reflects the spatial distribution of the water system, and can be applied to the construction of digital hydrological models for the Yellow River Basin, climate prediction, environmental change assessment and other related research fields, providing hydrological data support for studies on the ecological environment, hydrology and water resources of the Yellow River Basin.