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

作者：Mathias Mayer, Cindy E. Prescott, Wafa E. Abaker, Laurent Augusto, Lauric Cécillon, Gabriel William Dias Ferreira, Jason James, Robert Jandl, Klaus Katzensteiner, Jean‐Paul Laclau · 发表于：Forest Ecology and Management · 年份：2020 · DOI：10.1016/j.foreco.2020.118127 · 研究领域：Soil Carbon and Nitrogen Dynamics、Forest ecology and management、Ecology and Vegetation Dynamics Studies

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 ...