LavoiePareBergeron2005

Référence

Lavoie, M., Pare, D., Bergeron, Y. (2005) Impact of global change and forest management on carbon sequestrationin northern forested peatlands. Environmental Reviews, 13(4):199-240.

Résumé

Northern peatlands occupy approximately 4% of the global land surfaceand store about 30% of the global soil carbon (C). A compilationof C accumulation rates in northern peatlands indicated a long-termaverage rate of C accumulation of 24.1 g m-2 year-1. However, severalstudies have indicated that on a short-time scale and given theproper conditions, these ecosystems can exhibit very high ratesof C accumulation (up to 425 g m -2 year-1). Peatland developmentis related to precipitation and temperature, and climate changeis expected to have an important impact on the C balance of thisecosystem. Given the expected climate change, we suggest that mostof the northern forested peatlands located in areas where precipitationis expected to increase (eastern Canada, Alaska, FSU, and Fennoscandia)will continue to act as a C sink in the future. In contrast, forestedpeatlands of western and central Canada, where precipitation ispredicted to decrease, should have a reduction in their C sequestrationrates and (or) could become a C source. These trends could be affectedby forest management in forested peatlands and by changes in firecycles. Careful logging, as opposed to wildfire, will facilitateC sequestration in forested peatlands and boreal forest stands proneto paludification while silvicultural treatments (e.g., drainage,site preparation) recommended to increase site productivity willenhance C losses from the soil, but this loss could be compensatedby an increase in C storage in tree biomass. © 2005 NRC Canada.

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@ARTICLE { LavoiePareBergeron2005,
    AUTHOR = { Lavoie, M. and Pare, D. and Bergeron, Y. },
    TITLE = { Impact of global change and forest management on carbon sequestrationin northern forested peatlands },
    JOURNAL = { Environmental Reviews },
    YEAR = { 2005 },
    VOLUME = { 13 },
    PAGES = { 199-240 },
    NUMBER = { 4 },
    ABSTRACT = { Northern peatlands occupy approximately 4% of the global land surfaceand store about 30% of the global soil carbon (C). A compilationof C accumulation rates in northern peatlands indicated a long-termaverage rate of C accumulation of 24.1 g m-2 year-1. However, severalstudies have indicated that on a short-time scale and given theproper conditions, these ecosystems can exhibit very high ratesof C accumulation (up to 425 g m -2 year-1). Peatland developmentis related to precipitation and temperature, and climate changeis expected to have an important impact on the C balance of thisecosystem. Given the expected climate change, we suggest that mostof the northern forested peatlands located in areas where precipitationis expected to increase (eastern Canada, Alaska, FSU, and Fennoscandia)will continue to act as a C sink in the future. In contrast, forestedpeatlands of western and central Canada, where precipitation ispredicted to decrease, should have a reduction in their C sequestrationrates and (or) could become a C source. These trends could be affectedby forest management in forested peatlands and by changes in firecycles. Careful logging, as opposed to wildfire, will facilitateC sequestration in forested peatlands and boreal forest stands proneto paludification while silvicultural treatments (e.g., drainage,site preparation) recommended to increase site productivity willenhance C losses from the soil, but this loss could be compensatedby an increase in C storage in tree biomass. © 2005 NRC Canada. },
    KEYWORDS = { C sequestration Climate change Forest management Forested peatlandGreenhouse gases Paludification },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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