Effects of climate warming on carbon fluxes in grasslands- A global meta-analysis

Global Change Biology
Na WangRalf Kiese

Abstract

Climate warming will affect terrestrial ecosystems in many ways, and warming-induced changes in terrestrial carbon (C) cycling could accelerate or slow future warming. So far, warming experiments have shown a wide range of C flux responses, across and within biome types. However, past meta-analyses of C flux responses have lacked sufficient sample size to discern relative responses for a given biome type. For instance grasslands contribute greatly to global terrestrial C fluxes, and to date grassland warming experiments provide the opportunity to evaluate concurrent responses of both plant and soil C fluxes. Here, we compiled data from 70 sites (in total 622 observations) to evaluate the response of C fluxes to experimental warming across three grassland types (cold, temperate, and semi-arid), warming methods, and short (≤3 years) and longer-term (>3 years) experiment lengths. Overall, our meta-analysis revealed that experimental warming stimulated C fluxes in grassland ecosystems with regard to both plant production (e.g., net primary productivity (NPP) 15.4%; aboveground NPP (ANPP) by 7.6%, belowground NPP (BNPP) by 11.6%) and soil respiration (Rs) (9.5%). However, the magnitude of C flux stimulation varied significantly acro...Continue Reading

References

Jul 12, 2002·Statistics in Medicine·Simon G Thompson, Julian P T Higgins
Jul 9, 2010·The New Phytologist·Delu LinShiqiang Wan
Dec 10, 2015·Proceedings of the National Academy of Sciences of the United States of America·Fernando T MaestreBrajesh K Singh
Dec 3, 2016·Nature·T W CrowtherM A Bradford

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Citations

Apr 11, 2020·Plant, Cell & Environment·Linfeng LiYanfen Wang
Nov 21, 2020·Science China. Life Sciences·Yuanfeng SunJingyun Fang
Feb 5, 2021·Global Change Biology·Manuel P MartinSylvain Pellerin
Aug 5, 2021·European Journal of Agronomy : the Journal of the European Society for Agronomy·Krischan PetersenRalf Kiese
Sep 3, 2021·The Science of the Total Environment·Daniel P Bebber

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