TY  - Data
T1  - 1:1 million grassland distribution data set in Heihe River Basin
A1  - Wu lizong
DO  - 10.12072/ncdc.westdc.db3860.2023
PY  - 2020
DA  - 2020-12-10
PB  - National Cryosphere Desert Data Center
AB  - Classification principle: the formation, development and evolution of natural grassland types are restricted by ecological environment and human economic activities (including grazing, reclamation, firewood and so on). Therefore, natural conditions and social economy must be considered in grassland classification. The specific principles refer to the three principles of comprehensive factors, dominant factors and production application of land classification. Main attribute information description: maintype: primary classification; type: secondary classification, also known as group; subtype: Tertiary classification, represented by characteristic species or constructive species of vegetation.
DB  - NCDC
UR  - http://www.ncdc.ac.cn/portal/metadata/826c6110-d875-43dd-b9e8-9dc64e42cefc
ER  -