TY  - Data
T1  - Heihe River Basin boundary dataset
A1  - Heihe project data management center
DO  - 10.12072/ncdc.westdc.db3673.2023
PY  - 2020
DA  - 2020-04-08
PB  - National Cryosphere Desert Data Center
AB  - The Heihe River Basin is the second largest inland river basin in China. In the past 30 years, a relatively complete basin observation system has been established in the Heihe River Basin, which has become an important inland river research base in China. Watersheds are important natural research units, but the boundaries of the Heihe River Basin are not unified. In order to facilitate user use of data, we have collected and organized five common Heihe River Basin boundaries in the literature:1) From 1985 to 1986, China began to conduct systematic research on the Heihe River Basin as a whole. Based on basic investigations and a large amount of data, early maps of the Heihe River Basin were drawn, with a drainage area of 138900 km ^ 2. The entire watershed is divided into three hydrological balance zones, namely: the balance zone of the Heihe River main flow system, the balance zone of the Beida River main flow system, and the balance zone of the Maying Fengle Mountain front flow system2) The sub theme of the "Ninth Five Year Plan" national key scientific and technological research project "Research on the rational utilization of water resources in the Heihe River Basin and the coordinated development of economy, society, and ecological environment" considers the integrity of county-level administrative units. Based on the first watershed boundary, the watershed boundary was revised using the administrative boundary at that time, forming the current "Digital Heihe River" information system（ http://heihe.westgis.ac.cn ）The Heihe River Basin boundary announced has a drainage area of 128700 km ^ 2. The division of hydrological units inherits the original idea and is divided into three major water systems, namely the eastern water system, the central water system, and the western water system3) In the comprehensive management plan of the Heihe River Basin of the Ministry of Water Resources, the area of the Heihe River Basin is determined to be 142900 km2, and the hydrolo
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/ba9321b3-1242-434f-96cb-9304376bf5d5
ER  -