title: Influence of multiple global change drivers on terrestrial carbon storage: additive effects are common.
abstract: The interactive effects of multiple global change drivers on terrestrial carbon (C) storage remain poorly understood. Here, we synthesise data from 633 published studies to show how the interactive effects of multiple drivers are generally additive (i.e. not differing from the sum of their individual effects) rather than synergistic or antagonistic. We further show that (1) elevated CO2, warming, N addition, P addition and increased rainfall, all exerted positive individual effects on plant C pools at both single-plant and plant-community levels; (2) plant C pool responses to individual or combined effects of multiple drivers are seldom scale-dependent (i.e. not differing from single-plant to plant-community levels) and (3) soil and microbial biomass C pools are significantly less sensitive than plant C pools to individual or combined effects. We provide a quantitative basis for integrating additive effects of multiple global change drivers into future assessments of the C storage ability of terrestrial ecosystems.
authors.affiliation: Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China.|Department of Biological Science, Institute of Environment Sciences, University of Quebec at Montreal, Case Postale 8888, succursale Centre-Ville, Montreal, QC, H3C 3P8, Canada.
authors.forename: Kai
authors.initials: K
authors.lastname: Yue
authors.affiliation: Sustainable Agri-Food Sciences Division, Agri-Food & Biosciences Institute (AFBI), Newforge Lane, Belfast, BT9 5PX, UK.
authors.forename: Dario A
authors.initials: DA
authors.lastname: Fornara
authors.affiliation: Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China.
authors.forename: Wanqin
authors.initials: W
authors.lastname: Yang
authors.affiliation: Department of Geosciences and Natural Resource Management, University of Copenhagen, Rolighedsvej 23, DK-1958, Frederiksberg C, Denmark.
authors.forename: Yan
authors.initials: Y
authors.lastname: Peng
authors.affiliation: Department of Biological Science, Institute of Environment Sciences, University of Quebec at Montreal, Case Postale 8888, succursale Centre-Ville, Montreal, QC, H3C 3P8, Canada.|Laboratory for Ecological Forecasting and Global Change, College of Forestry, Northwest A & F University, No. 3 Taicheng Road, Yangling, 712100, China.
authors.forename: Changhui
authors.initials: C
authors.lastname: Peng
authors.affiliation: Department of Biological Science, Institute of Environment Sciences, University of Quebec at Montreal, Case Postale 8888, succursale Centre-Ville, Montreal, QC, H3C 3P8, Canada.
authors.forename: Zelin
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Long-term Research Station of Alpine Forest Ecosystems, Provincial Key Laboratory of Ecological Forestry Engineering, Institute of Ecology and Forestry, Sichuan Agricultural University, 211 Huimin Road, Wenjiang District, Chengdu, 611130, Sichuan, China.
authors.forename: Fuzhong
authors.initials: F
authors.lastname: Wu
mesh_terms: D018533:Biomass; D057965:Carbon Sequestration; D057231:Climate Change; D017753:Ecosystem; D008962:Models, Theoretical; D018521:Plant Physiological Phenomena; D012987:Soil / Q000737:chemistry*; D012988:Soil Microbiology
chemical_list: D012987:Soil
keywords: Additive interaction; drought; elevated CO2; increased rainfall; nitrogen addition; phosphorus addition; warming