Response of soil greenhouse gas fluxes to warming: A global meta‐analysis of field studies

作者：Yan Weiming; Zhong Yangquanwei; Yang Jingyi; Shangguan Zhouping; Torn Margaret S.

来源：Geoderma, 2022, 419: 115865.

DOI：10.1016/J.GEODERMA.2022.115865

• Experimental warming
• Terrestrial ecosystem
• Carbon cycling
• Greenhouse gas fluxes
• Warming duration
• Plant biomass

Climate warming is predicted to stimulate soil greenhouse gas (GHG) fluxes. A growing number of field studies have investigated the effect of warming on GHG fluxes, but the global responses and temperature sensitivities of all three major biogenic GHGs (CO2, CH4 and N2O) to warming and the potential driving factors have not been well synthesized across different biomes. We conducted a meta-analysis of 2423 globally obtained observations across multiple terrestrial ecosystems (i.e., forest, shrubland, grassland, wetland, cropland and tundra) from 224 published studies. Globally, experimental warming significantly stimulated soil GHG fluxes; soil CO2 and N2O emissions increased by 9.9% and 17.9%, respectively, and CH4 emissions in the lowland regions and CH4 uptakes in the upland regions increased by 10.1% and 7.5%, respectively, under warming. These increases amounted to 2289.0?kg, 31.0?kg, and 0.5?kg?ha-1 year-1 of CO2, CH4 and N2O emissions and 1.1?kg?ha-1 year-1 o...

• 单位
  西北工业大学; 黄土高原土壤侵蚀与旱地农业国家重点实验室