How can the forest sector mitigate climate change in a changing climate? Case studies of boreal and northern temperate forests in eastern Canada

作     者：Lucas Moreau Evelyne Thiffault Dominic Cyr Yan Boulanger Robert Beauregard Lucas Moreau;Evelyne Thiffault;Dominic Cyr;Yan Boulanger;Robert Beauregard

作者机构：Departement des sciences du bois et de la foretUniversite LavalQuebecCanada Science and Technology BranchEnvironment and Climate Change CanadaGatineauCanada Laurentian Forestry CentreNatural Resources CanadaQuebecCanada 

出 版 物：《Forest Ecosystems》 (森林生态系统（英文版）)

年 卷 期：2022年第9卷第2期

页      面：267-287页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：This study was funded by the Quebec Ministry of Forests,Wildlife,and Parks(contrats de service de recherche forestier 142332156-2018-A and 142332174-E:PI:E.Thiffault) by the Natural Science and Engineering Research Council through a Discovery Grant to E.Thiffault(grant number RGPIN-2018-05755) 

主　　题：Climate change Carbon Forest sector Forest management Boreal landscapes Northern temperate landscape Mitigation potential 

摘      要：Background:Forest based climate mitigation emerged as a key component of the Paris Agreement,and thus re-quires robust science to reduce uncertainties related to such *** aim of this study was to assess and compare the cumulative effects on carbon dynamics of forest management and climate change on boreal and northern temperate forest sector in eastern Canada for the 2020–2100 ***:We used the spatially explicit forest landscape model LANDIS-II and its extension Forest Carbon Suc-cession,in conjunction with the Carbon Budget Model for Harvested Wood Products *** simulated the dynamics of forest composition and carbon flows from forest ecosystems to wood products and their substitution effect on markets under increasing climate forcing,according to a tonne-year *** were con-ducted for a series of forest management scenarios based on realistic practices principally by clearcut in the boreal territory and continuous-cover forestry in the northern temperate *** scenarios included:i)a business-as-usual scenario(BaU),representing the current management strategy,ii)increased harvesting by 6.3%to 13.9%,iii)increased conservation(*** harvesting by 11.1%to 49.8%),iiii)and a scenario representing the natural evolution of the forest landscape(*** any management activity).Results:Our study revealed that increasing harvesting levels had contrasting effects on the mitigation potential in northern temperate(enhance net sequestration)and boreal forest sector(enhance net emissions)in comparison to the BaU from 2040 onwards,regardless of the future *** storage in wood products and the substi-tution effect were not sufficient to offset carbon emissions from ***,climate change had a strong impact on the capacity of both landscapes to act as carbon *** temperate landscapes became a net source of carbon over time due to their greater vulnerability to climate change than boreal landsc