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Severe freezing increases soil respiration during the thawing period: A meta-analysis

文献类型：期刊论文

作者Zhang, Jianxin1,2; Hong, Jiangtao2; Wei, Da2; Wang, Xiaodan2
刊名EUROPEAN JOURNAL OF SOIL SCIENCE
出版日期2021-10-25
页码6
关键词freeze-thaw process freezing temperature meta-analysis soil respiration thawing effect
ISSN号1351-0754
DOI10.1111/ejss.13161
英文摘要It is unclear how changes in soil freeze-thaw processes initiated by climate change might alter soil respiration. Using meta-analysis, we quantified the thawing effect on soil respiration under different freezing intensities and explored possible relationships among effect sizes with environmental factors. Our results showed that the overall mean thawing effect size was 18.84% and was highly variable among different ecosystems. Mild soil freezing (>=-5 degrees C) did not produce a significant thawing effect, while severe soil freezing (<-5 degrees C) consistently increased soil respiration during the subsequent thawing period across a diverse range of terrestrial ecosystems. Thawing effect sizes were significantly positively correlated with soil pH and freezing duration, but negatively correlated with soil C/N ratios, suggesting that soil respiration during thawing periods are stimulated more by freeze-thawing events under conditions of higher soil pH, longer freezing periods or lower soil C/N ratios. Consequently, this study reveals the important role of antecedent soil freezing temperatures in triggering the thawing effect and furthers our understanding of climatic interactions with soil carbon dynamics. Highlights Meta-analysis was conducted to quantify the effect of thawing on soil respiration. Mild soil freezing (>=-5 degrees C) did not produce a significant thawing effect. The threshold freezing temperature that triggers the thawing effect was around -5 degrees C. Thawing effect size was regulated by soil C/N ratio, soil pH, and freezing duration.
WOS关键词MICROBIAL BIOMASS ; ORGANIC-MATTER ; CO2 EMISSIONS ; CYCLES ; FROST ; RELEASE ; FLUXES ; CARBON
资助项目Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0404] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20020401]
WOS研究方向Agriculture
语种英语
WOS记录号WOS:000710773800001
出版者WILEY
资助机构Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; Strategic Priority Research Program of Chinese Academy of Sciences
源URL[http://ir.imde.ac.cn/handle/131551/56049]  
专题成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者Wang, Xiaodan
作者单位1.Univ Chinese Acad Sci, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Jianxin,Hong, Jiangtao,Wei, Da,et al. Severe freezing increases soil respiration during the thawing period: A meta-analysis[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2021:6.
APA Zhang, Jianxin,Hong, Jiangtao,Wei, Da,&Wang, Xiaodan.(2021).Severe freezing increases soil respiration during the thawing period: A meta-analysis.EUROPEAN JOURNAL OF SOIL SCIENCE,6.
MLA Zhang, Jianxin,et al."Severe freezing increases soil respiration during the thawing period: A meta-analysis".EUROPEAN JOURNAL OF SOIL SCIENCE (2021):6.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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