A global synthesis reveals more response sensitivity of soil carbon flux than pool to warming
文献类型：期刊论文
| 作者 | Yan, Chuang1,2; Yuan, Zhiyou2,3; Shi, Xinrong2,3; Lock, T. Ryan4; Kallenbach, Robert L.4 |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2019-11-27 |
| 页码 | 14 |
| 关键词 | Carbon cycle Global warming Soil carbon pools Soil carbon fluxes Terrestrial ecosystems |
| ISSN号 | 1439-0108 |
| DOI | 10.1007/s11368-019-02513-1 |
| 通讯作者 | Yuan, Zhiyou(zyyuan@ms.iswc.ac.cn) |
| 英文摘要 | Purpose Climate change continues to garner attention in the public sphere. Most recognize its potential to affect global carbon (C) dynamics in the biosphere. Many posit that global warming promotes the decomposition of soil organic C (SOC) and increases soil C release. However, it remains unclear how soil C dynamics respond to different influencing factors (e.g., warming method, magnitude/duration, mean annual temperature (MAT) and precipitation (MAP)) across ecosystems on a global scale. Materials and methods Here, we performed a meta-analysis to identify the general global patterns of how warming impacts soil C dynamics. Results and discussion Across all terrestrial ecosystems, warming reduced SOC by 4.96% and stimulated soil microbial biomass C (MBC), soil respiration (SR), and heterotrophic respiration (HR) by 6.30, 14.56, and 8.42%, respectively. Warming affected soil C pools in grasslands and soil C fluxes in forests. The changes in SOC did not correlate to warming magnitude/duration or climate factors (MAT and MAP). However, changes in both MBC and SR did correlate to warming magnitude/duration and MAT. The changes in HR showed a quadratic response to warming magnitude and a linear response to MAP. Open-top chamber method can effectively affect soil C pools. SR proved to be more sensitive than HR to most warming methods. Conclusions Our results showed that soil C release exhibited more sensitivity to warming magnitude/duration or MAT/MAP than did net soil C sequestration. These results indicate that warming induces accelerated transition of soils from C sink to C source. Furthermore, they show the potential for global warming effects to exacerbate the positive feedback loop in terrestrial ecosystems. However, the declining rates-of-change in SR and HR under high magnitude warming may mitigate the positive feedback. Our analyses can improve the predictions of feedback between atmospheric and soil C pools. |
| WOS关键词 | MICROBIAL BIOMASS ; ORGANIC-CARBON ; NITROGEN POOLS ; TERRESTRIAL ECOSYSTEMS ; DECOMPOSITION RATES ; CLIMATE-CHANGE ; CO2 EXCHANGE ; RESPIRATION ; FOREST ; METAANALYSIS |
| 资助项目 | National Key Research and Development Plan of China[2016YFA0600800] ; National Natural Science Foundation of China[31570438] ; Hundred Talents Program of Shaanxi Province[A289021701] ; Natural Science Basic Research Plan in Shaanxi Province of China[2018JZ3002] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000498948800002 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | National Key Research and Development Plan of China ; National Natural Science Foundation of China ; Hundred Talents Program of Shaanxi Province ; Natural Science Basic Research Plan in Shaanxi Province of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/130386]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yuan, Zhiyou |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Univ Missouri, Div Plant Sci, Coll Agr Food & Nat Resources, 108 Waters Hall, Columbia, MO 65211 USA |
| 推荐引用方式 GB/T 7714 | Yan, Chuang,Yuan, Zhiyou,Shi, Xinrong,et al. A global synthesis reveals more response sensitivity of soil carbon flux than pool to warming[J]. JOURNAL OF SOILS AND SEDIMENTS,2019:14. |
| APA | Yan, Chuang,Yuan, Zhiyou,Shi, Xinrong,Lock, T. Ryan,&Kallenbach, Robert L..(2019).A global synthesis reveals more response sensitivity of soil carbon flux than pool to warming.JOURNAL OF SOILS AND SEDIMENTS,14. |
| MLA | Yan, Chuang,et al."A global synthesis reveals more response sensitivity of soil carbon flux than pool to warming".JOURNAL OF SOILS AND SEDIMENTS (2019):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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