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.
Outline and technical regulations of grassland resources investigation in key pastoral areas
Based on the landscape method, it is divided according to the three elements of landform, soil and vegetation, that is, based on the natural zone, it is divided step by step according to the three dominant differentiation factors of landform, soil and vegetation.
According to the requirements of "outline and technical regulations for grassland resources investigation in key pastoral areas" drawn up by the northern grassland resources investigation office in 1981, and combined with the actual situation of grassland in this area, the classification is carried out.
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CSTR:11738.11.ncdc.Westdc.2020.782
10.12072/ncdc.westdc.db3860.2023