Response of grassland soil respiration to experimental warming: The long-term effects may be greater than we thought
文献类型：期刊论文
| 作者 | Chen, Ziwei1,2,3; Zhao, Dongsheng2; Zhu, Yu1,2; Zhang, Renduo3; Guo, Caiyun4 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2022-05-01 |
| 卷号 | 168页码:9 |
| ISSN号 | 0038-0717 |
| 关键词 | Soil respiration Grassland Meta-analysis Experimental warming Three-phase pattern |
| DOI | 10.1016/j.soilbio.2022.108616 |
| 通讯作者 | Zhao, Dongsheng(zhaods@igsnrr.ac.cn) |
| 英文摘要 | Soil respiration (Rs) profoundly affects the global carbon cycle, and its response to climate warming in grasslands shows significant heterogeneity for poorly understood reasons. A meta-analysis was undertaken to evaluate the effects of warming (including the magnitude, methods, and duration of warming) and environmental factors (including climate, soils, and plants) on the response of Rs to warming in grasslands, using a global dataset of 168 independent measurements. Multi-model inference, an information-theoretical method for synthesizing results of multiple alternative models, was used to quantify the relative importance of the environmental factors. We found that the response of Rs to warming followed a three-phase pattern: Rs increased initially, then remained unchanged, and then increased again as the duration of warming increased. The long-term response was greater than the short-term response. The Rs response was also affected by the method of warming, with open-top chambers promoting Rs more than infrared heaters. The response of Rs to warming was also positively related to the magnitude of warming. Rs was greatly increased with warming in temperate grasslands compared with that in cold grasslands but did not change significantly in arid grasslands. According to multi-model inference, this can be attributable to differences in soil nutrients and the mean annual precipitation. Our findings suggest a greater long-term stimulation of Rs in a warming world than we previously thought, so short-term studies cannot provide a reliable scientific basis for carbon projections under long-term climate warming. Our results also demonstrate that the carbon released in cold grasslands could be overestimated if the water deficiency was not considered. |
| WOS关键词 | ECOSYSTEM CARBON ; TEMPERATURE SENSITIVITY ; THERMAL-ACCLIMATION ; CO2 EFFLUX ; CLIMATE ; METAANALYSIS ; FOREST ; PHOTOSYNTHESIS ; AVAILABILITY ; COMPONENTS |
| 资助项目 | National Key R&D Program of China[2017YFA0604803] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20020202] |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| WOS记录号 | WOS:000793635400003 |
| 资助机构 | National Key R&D Program of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/177372]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhao, Dongsheng |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangdong Prov Key Lab Environm Pollut Control &, Guangzhou 510006, Peoples R China 4.Changsha Univ, Sch Civil Engn, Changsha 410022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Ziwei,Zhao, Dongsheng,Zhu, Yu,et al. Response of grassland soil respiration to experimental warming: The long-term effects may be greater than we thought[J]. SOIL BIOLOGY & BIOCHEMISTRY,2022,168:9. |
| APA | Chen, Ziwei,Zhao, Dongsheng,Zhu, Yu,Zhang, Renduo,&Guo, Caiyun.(2022).Response of grassland soil respiration to experimental warming: The long-term effects may be greater than we thought.SOIL BIOLOGY & BIOCHEMISTRY,168,9. |
| MLA | Chen, Ziwei,et al."Response of grassland soil respiration to experimental warming: The long-term effects may be greater than we thought".SOIL BIOLOGY & BIOCHEMISTRY 168(2022):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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