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| A Meta-analysis of Responses of Soil Microbes to Warming |
| Received:April 27, 2015 |
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| KeyWord:warming;microbe;soil;Meta-analysis |
| Author Name | Affiliation | E-mail | | WANG Wen-li | Shenzhen Graduate School, Peking University, Shenzhen 518055, China | | | KONG Wei-dong | Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100085, China | | | ZENG Hui | Shenzhen Graduate School, Peking University, Shenzhen 518055, China | zengh@pkusz.edu.cn |
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| Abstract: |
| We meta-analyzed 96 datasets generated in 35 manipulated experiments published in the past 6 years(2009 to early 2015) and discussed the patterns of responses of soil microbes to warming. Four continuous variables from each study were chosen:mean annual temperature and mean annual precipitation of study site, and magnitude and duration of warming. Additionally, we also chose ecosystem types as categorical variable. We used the natural log of the response ratio as a metric of effect size. Warming by average 2 ℃ increased soil microbial biomass carbon by 1.4%, microbial biomass nitrogen by 1.7%, and fungal biomass by 3.7%, but decreased bacterial biomass by 1.9%. The warming-induced changes of soil microbial biomass carbon were significantly correlated with mean annual precipitation and warming magnitudes, while those of soil microbial biomass nitrogen were significantly correlated with mean annual precipitation, warming magnitudes and mean annual temperature. |
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