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Tamm Review: Influence of forest management activities on soil organic carbon stocks: A knowledge synthesis

Forest ecology and management, 2020-06, Vol.466 [Peer Reviewed Journal]

Attribution - NonCommercial - NoDerivatives ;ISSN: 0378-1127 ;EISSN: 1872-7042 ;DOI: 10.1016/j.foreco.2020.118127

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  • Title:
    Tamm Review: Influence of forest management activities on soil organic carbon stocks: A knowledge synthesis
  • Author: Mayer, Mathias ; Prescott, Cindy ; Abaker, Wafa E A ; Augusto, Laurent ; Cecillon, Lauric L. ; Ferreira, Gabriel W D ; James, Jason ; Jandl, Robert ; Katzensteiner, Klaus ; Laclau, Jean-Paul ; Laganière, Jérôme ; Nouvellon, Yann ; Paré, David ; Stanturf, John A ; Vanguelova, Elena I ; Vesterdal, Lars
  • Subjects: Agricultural sciences ; Environmental Sciences ; Life Sciences ; Silviculture, forestry
  • Is Part Of: Forest ecology and management, 2020-06, Vol.466
  • Description: Almost half of the total organic carbon (C) in terrestrial ecosystems is stored in forest soils. By altering rates of input or release of C from soils, forest management activities can influence soil C stocks in forests. In this review, we synthesize current evidence regarding the influences of 13 common forest management practices on forest soil C stocks. Afforestation of former croplands generally increases soil C stocks, whereas on former grasslands and peatlands, soil C stocks are unchanged or even reduced following afforestation. The conversion of primary forests to secondary forests generally reduces soil C stocks, particularly if the land is converted to an agricultural land-use prior to reforestation. Harvesting, particularly clear-cut harvesting, generally results in a reduction in soil C stocks, particularly in the forest floor and upper mineral soil. Removal of residues by harvesting whole-trees and stumps negatively affects soil C stocks. Soil disturbance from site preparation decreases soil C stocks, particularly in the organic top soil, however improved growth of tree seedlings may outweigh soil C losses over a rotation. Nitrogen (N) addition has an overall positive effect on soil C stocks across a wide range of forest ecosystems. Likewise, higher stocks and faster accumulation of soil C occur under tree species with N-fixing associates. Stocks and accumulation rates of soil C also differ under different tree species, with coniferous species accumulating more C in the forest floor and broadleaved species tending to store more C in the mineral soil. There is some evidence that increased tree species diversity could positively affect soil C stocks in temperate and subtropical forests, but tree species identity, particularly N-fixing species, seems to have a stronger impact on soil C stocks than tree species diversity. Management of stand density and thinning have small effects on forest soil C stocks. In forests with high populations of ungulate herbivores, reduction in herbivory levels can increase soil C stocks. Removal of plant biomass for fodder and fuel is related to a reduction in the soil C stocks. Fire management practices such as prescribed burning reduce soil C stocks, but less so than wildfires which are more intense. For each practice, we identify existing gaps in knowledge and suggest research to address the gaps.
  • Publisher: Elsevier
  • Language: English
  • Identifier: ISSN: 0378-1127
    EISSN: 1872-7042
    DOI: 10.1016/j.foreco.2020.118127
  • Source: Hyper Article en Ligne (HAL) (Open Access)
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