Canadian Forest Service Publications

Delineating managed land for reporting national greenhouse gas emissions and removals to the United Nations framework convention on climate change. 2018. Ogle, S.M., Domke, G., Kurz, W.A., Rocha, M.T., Huffman, T., Swan, A., Smith, J.E., Woodall, C., Krug, T. Carbon Balance Manage 13:9.

Year: 2018

Issued by: Pacific Forestry Centre

Catalog ID: 39156

Language: English

Availability: PDF (request by e-mail)

Available from the Journal's Web site.
DOI: 10.1186/s13021-018-0095-3

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Abstract

Land use and management activities have a substantial impact on carbon stocks and associated greenhouse gas emissions and removals. However, it is challenging to discriminate between anthropogenic and non-anthropogenic sources and sinks from land. To address this problem, the Intergovernmental Panel on Climate Change developed a managed land proxy to determine which lands are contributing anthropogenic greenhouse gas emissions and removals. Governments report all emissions and removals from managed land to the United Nations Framework Convention on Climate Change based on this proxy, and policy interventions to reduce emissions from land use are expected to focus on managed lands. Our objective was to review the use of the managed land proxy, and summarize the criteria that governments have applied to classify land as managed and unmanaged. We found that the large majority of governments are not reporting on their application of the managed land proxy. Among the governments that do provide information, most have assigned all area in specific land uses as managed, while designating all remaining lands as unmanaged. This designation as managed land is intuitive for croplands and settlements, which would not exist without management interventions, but a portion of forest land, grassland, and wetlands may not be managed in a country. Consequently, Brazil, Canada and the United States have taken the concept further and delineated managed and unmanaged forest land, grassland and wetlands, using additional criteria such as functional use of the land and accessibility of the land to anthropogenic activity. The managed land proxy is imperfect because reported emissions from any area can include non-anthropogenic sources, such as natural disturbances. However, the managed land proxy does make reporting of GHG emissions and removals from land use more tractable and comparable by excluding fluxes from areas that are not directly influenced by anthropogenic activity. Moreover, application of the managed land proxy can be improved by incorporating additional criteria that allow for further discrimination between managed and unmanaged land.

Plain Language Summary

This publication is the result of the collaboration of experts from the US Forest Service, the Canadian Forest Service, Agriculture and Agrifoods Canada and Brazil. The concept of managed land is used to report greenhouse gas emissions and removals in the land sector as a proxy to determine which lands are contributing greenhouse gas emissions and removals from human activities. We summarize the criteria that governments have applied to classify land as managed and unmanaged. The majority of governments are not reporting on their application of the managed land proxy. Among the governments that do provide information, most have assigned all area in specific land uses as managed, while designating all remaining lands as unmanaged. This designation as managed land is intuitive for croplands and settlements, but a portion of forest land, grassland, and wetlands may be unmanaged. Consequently, Brazil, Canada and the United States delineate managed and unmanaged forest land, grassland and wetlands. The managed land proxy is imperfect because reported emissions from any area can include non-anthropogenic sources, such as natural disturbances. It does make reporting of GHG emissions and removals from land use more tractable and comparable by excluding fluxes from areas that are not directly influenced by human activity.