Effect of soil microorganisms and labile C availability on soil respiration in response to litter inputs in forest ecosystems: A meta‐analysis

DC FieldValueLanguage
dc.contributor.authorZhang, Yanjun-
dc.contributor.authorZou, Junliang-
dc.contributor.authorMeng, Delong-
dc.contributor.authorOsborne, Bruce A.-
dc.contributor.authoret al.-
dc.date.copyright2020 the Authorsen_US
dc.identifier.citationEcology and Evolutionen_US
dc.description.abstractLitter inputs can influence soil respiration directly through labile C availability and, indirectly, through the activity of soil microorganisms and modifications in soil microclimate; however, their relative contributions and the magnitude of any effect remain poorly understood. We synthesized 66 recently published papers on forest ecosystems using a meta‐analysis approach to investigate the effect of litter inputs on soil respiration and the underlying mechanisms involved. Our results showed that litter inputs had a strong positive impact on soil respiration, labile C availability, and the abundance of soil microorganisms, with less of an impact related to soil moisture and temperature. Overall, soil respiration was increased by 36% and 55%, respectively, in response to natural and doubled litter inputs. The increase in soil respiration induced by litter inputs showed a tendency for coniferous forests (50.7%)> broad‐leaved forests (41.3%)> mixed forests (31.9%). This stimulation effect also depended on stand age with 30‐ to 100‐year‐old forests (53.3%) and ≥100‐year‐old forests (50.2%) both 1.5 times larger than ≤30‐year‐old forests (34.5%). Soil microbial biomass carbon and soil dissolved organic carbon increased by 21.0%‐33.6% and 60.3%‐87.7%, respectively, in response to natural and doubled litter inputs, while soil respiration increased linearly with corresponding increases in soil microbial biomass carbon and soil dissolved organic carbon. Natural and doubled litter inputs increased the total phospholipid fatty acid (PLFA) content by 6.6% and 19.7%, respectively, but decreased the fungal/bacterial PLFA ratio by 26.9% and 18.7%, respectively. Soil respiration also increased linearly with increases in total PLFA and decreased linearly with decreases in the fungal/bacterial PLFA ratio. The contribution of litter inputs to an increase in soil respiration showed a trend of total PLFA > fungal/bacterial PLFA ratio > soil dissolved organic carbon > soil microbial biomass carbon. Therefore, in addition to forest type and stand age, labile C availability and soil microorganisms are also important factors that influence soil respiration in response to litter inputs, with soil microorganisms being more important than labile C availability.en_US
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
dc.subjectLabile C availabilityen_US
dc.subjectLitter inputsen_US
dc.subjectSoil microorganismsen_US
dc.subjectSoil respirationen_US
dc.titleEffect of soil microorganisms and labile C availability on soil respiration in response to litter inputs in forest ecosystems: A meta‐analysisen_US
dc.typeJournal Articleen_US
dc.statusPeer revieweden_US
dc.neeo.contributorOsborne|Bruce A.|aut|-
dc.neeo.contributoret al.||aut|-
dc.description.othersponsorshipNational Natural Science Foundation of Chinaen_US
dc.description.othersponsorshipSpecial Project on Hi‐Tech Innovation Capacityen_US
dc.description.othersponsorshipExcellent Youth Scholars Program from Beijing Academy of Agriculture and Forestry Sciencesen_US
dc.description.othersponsorshipScientific and Technological Plan Projects in Shaanxi Provinceen_US
dc.description.othersponsorshipThe Hunan International Scientific and Technological Cooperation Base of Environmental Microbiome and Applicationen_US
dc.description.othersponsorshipDoctoral Research Project of Baoji University of Arts and Sciencesen_US
item.fulltextWith Fulltext-
Appears in Collections:Biology & Environmental Science Research Collection
Earth Institute Research Collection
Files in This Item:
 File SizeFormat
Downloadece3.6965.pdf698.63 kBAdobe PDF
Show simple item record

Page view(s)

Last Week
Last month
checked on Jan 20, 2022


checked on Jan 20, 2022

Google ScholarTM



If you are a publisher or author and have copyright concerns for any item, please email research.repository@ucd.ie and the item will be withdrawn immediately. The author or person responsible for depositing the article will be contacted within one business day.