黄河流域12.5米分辨率水文地貌量化要素分析数据集  

A dataset of hydrogeomorphic quantitative analysis with 12.5m spatial resolution in the Yellow River Basin

作　　者：成城 史海静[2,3,4] 张少伟 税军峰 曹晓萍[2] CHENG Cheng;SHI Haijing;ZHANG Shaowei;SHUI Junfeng;CAO Xiaoping(Northwest A&F University,Yangling 712100,P.R.China;Institute of Soil and Water Conservation,Northwest A&F University,Yangling 712100,P.R.China;Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling 712100,P.R.China;National Earth System Science Data Center,National Science&Technology Infrastructure of China,Beijing 100101,P.R.China;Shanxi Geomatics Center,Ministry of Natural Resources,Xi’an 710054,P.R.China)

机构地区：[1]西北农林科技大学,陕西杨陵712100 [2]西北农林科技大学水土保持研究所,陕西杨陵712100 [3]中国科学院水利部水土保持研究所,陕西杨陵712100 [4]国家科技基础条件平台国家地球系统科学数据中心,北京100101 [5]自然资源部陕西基础地理信息中心,西安710054

出　　处：《中国科学数据（中英文网络版）》2022年第4期144-157,共14页China Scientific Data

基　　金：国家科技基础条件平台建设项目(2005DKA32300);中国科学院西部之光“西部青年学者”项目(XAB2020YN04)。

摘　　要：黄河流域是我国重要的生态屏障,其生态环境脆弱,水土流失严重,水文地貌要素分析对该区域水土保持和生态环境保护具有重要的作用。本数据集以ALOS 12.5 m DEM数据为基础,通过对该DEM进行初步处理和水分分析计算得到黄河流域12.5 m分辨率的流向、汇流面积、流水线长度和河流网络4项水文分析因子数据。本数据集与不同分辨率的同期数据产品相比较,与真实河网吻合度较高,数据质量较好。本数据集可应用于流域水文、土壤水分、土壤侵蚀等方面的研究。As an important ecological barrier in China, the Yellow River Basin is characterized by fragile ecological environment and serious soil erosion. The hydrological analysis plays an important role in soil and water conservation and ecological environment protection in this area. This dataset contains four factors for hydrological analysis, namely flow direction, flow length and stream network. The data are sourced from the ALOS 12.5 m DEMs, which were then processed through preprocessing, framing, projection, mosaic and hydrological analysis and calculation. Compared with data products of the same period with different resolutions, this dataset is characteristic of better data quality and higher consistency with the real stream network. It can be applied to the study on watershed hydrology, soil moisture and soil erosion, etc.

关 键 词：黄河流域 地形因子 河流网络 水文分析 

分 类 号：P931.1[天文地球—自然地理学]