LY/T 2990-2018
Active
Industry standards-Forestry
LY/T 2990-2018 Long-term observation indicators for urban ecosystem
LY/T 2990-2018 Long-term observation indicators for urban ecosystem
Basic Information
Standard Code:
LY/T 2990-2018
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Forestry
ICS Name:
Agriculture and forestry
Publish Date:
2018-12-29
Implement Date:
2019-05-01
Pages:
9 pages
Scope
This standard specifies the positioning observation indicators of urban ecosystems, including urban forest resources observation indicators, meteorological observation indicators, atmospheric environment observation indicators, recreational and health-preserving environment observation indicators, hydrology and water quality observation indicators, soil observation indicators, and plant community observation indicators. This standard is applicable to urban ecosystem positioning observation across the country. The urban ecosystems covered in this standard mainly include urban areas and surrounding natural ecosystems such as forests and wetlands.
Development Information
Referenced Standards
Related Standards
GB 4862-1984
Replaced
GB/T 8137-1987
Replaced
GB/T 8137-1987 Seed lac—Specification
GB/T 8138-1987
Replaced
GB/T 8138-1987 Shellac
GB/T 8139-1987
Replaced
GB/T 8139-1987 Dewaxed shellac, Decolorized shellac and decolorized dewaxed shellac
GB/T 8140-1987
Replaced
GB/T 8140-1987 Bleached lac
GB/T 8141-1987
Replaced