文献类型：期刊文献

英文题名：A global meta-analysis of forest harvesting effects on soil respiration, its components, and temperature sensitivity

作者：Yang, Lu[1] Zhang, Huiru[1,2] Qin, Jianghuan[1] Liu, Xianzhao[1] Mayer, Mathias[3,4]

通信作者：Qin, JH[1];Liu, XZ[1]

机构：[1]Chinese Acad Forestry, Res Inst Forest Resource Informat Tech, State Key Lab Efficient Prod Forest Resources, Key Lab Forest Management & Growth Modelling, Beijing, Peoples R China;[2]Chinese Acad Forestry, Expt Ctr Forestry North China, Beijing, Peoples R China;[3]BOKU Univ, Inst Forest Ecol, Dept Forest & Soil Sci, Vienna, Austria;[4]Swiss Fed Inst Forest Snow & Landscape Res WSL, Forest Soils & Biogeochem, Birmensdorf, Switzerland

年份：2024

卷号：358

外文期刊名：AGRICULTURAL AND FOREST METEOROLOGY

收录：;Scopus(收录号：2-s2.0-85206268894);WOS:【SCI-EXPANDED(收录号:WOS:001343449100001)】；

基金：This work was sponsored by the Key Project of National Key Research and Development Plan (2022YFD2200504; 2023YFD220080302) and Fundamental Research Funds of CAF (CAFYBB2023MA014). M.M. has received support from an Erwin Schrodinger Fellowship from the Austrian Science Fund (FWF project number J-4369).

语种：英文

外文关键词：Forest harvesting; Experimental setups; Background conditions; Soil respiration; Temperature sensitivity

摘要：Understanding the effects of timber harvesting on soil respiration, including its autotrophic and heterotrophic components and their temperature sensitivity, is crucial for predicting how forest management affects the carbon cycle. Here, we conducted a meta-analysis to assess these effects on a global scale, synthesizing data from 1656 paired observations from 143 studies worldwide. On average, harvesting increased soil respiration by 6.0 %, most significantly in coniferous forests and subtropical regions. The response of total soil respiration was more closely coupled to changes in its heterotrophic than in its autotrophic component. The positive effects of harvesting on both respiration components decreased with increasing harvest intensity and were positively correlated with changes in soil nitrogen, root biomass, and microbial biomass carbon. Harvesting reduced the temperature sensitivity of soil respiration by 6.4 %, particularly in coniferous forests and temperate regions. The temperature sensitivity of soil autotrophic respiration increased in the first years after harvesting compared to the control but was significantly lower in later stages (c. > 6 years) after harvesting. Furthermore, the effects of harvesting on soil respiration, its components and temperature sensitivity varied greatly between post-harvest treatments and seasons of measurement. The results of our synthesis provide a basis for refining ecosystem models to better predict soil carbon dynamics in harvested forests on a global scale.