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Stocks et flux de carbone dans les forêts françaises

Abstract : Forests contain most of the carbon stored in the earth's biomass (81%) and could play a role in CO2 mitigation to a certain extent. We estimate French forest carbon stocks in biomass to be 860 MtC on 14.5 million hectares of forests, and 1,140 MtC in forest soils. Total carbon in the in the 14.5 millions hectares of French forests is estimated at 2,000 MtC. Average annual flux for the 1979/1991 period is 10.5 MtC/y, i.e. 10% of national fossil fuel emissions. The main causes of this net carbon uptake are the rapid increase of forest areas, increasing productivity due to environmental changes, ageing or, in some localizes areas, more intensive silvicultural practises. These carbon sinks are not offset by the harvesting level which remains low on average (61% of the annual volume growth). Forestry carbon mitigation options applicable in France are discussed. The need for global economic and ecological budgets (including carbon stocks, soil fertility and biodiversity) of the possible alternatives is stressed.
Mots-clés : EFNO CEMAGREF FRANCE
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https://hal.inrae.fr/hal-02579746
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Submitted on : Thursday, May 14, 2020 - 7:46:53 PM
Last modification on : Friday, June 25, 2021 - 12:08:07 PM

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  • HAL Id : hal-02579746, version 1
  • IRSTEA : PUB00009160

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J.L. Dupouey, Gérôme Pignard, Vincent Badeau, A. Thimonier, J.F. Dhote, et al.. Stocks et flux de carbone dans les forêts françaises. Comptes Rendus de l'Académie d'Agriculture de France, Académie d'agriculture de France, 1999, 85 (6), pp.293-310. ⟨hal-02579746⟩

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