Temperature sensitivity of soil respiration across multiple time scales in a temperate plantation forest
文献类型：期刊论文
| 作者 | Yan, Tao1; Song, Huanhuan2,3; Wang, Zhaoqi1; Teramoto, Munemasa4; Wang, Jinsong5; Liang, Naishen4; Ma, Chao1; Sun, Zhenzhong1; Xi, Yi1; Li, Lili1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-10-20 |
| 卷号 | 688页码:479-485 |
| 关键词 | Temperature dependence Automated chamber system Plantation Soil CO2 efflux Temporal variability |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2019.06.318 |
| 通讯作者 | Peng, Shushi(speng@pku.edu.cn) |
| 英文摘要 | Soil respiration (Rs) is the largest carbon (C) flux from terrestrial ecosystems to the atmosphere. Predictions of Rs and associated feedback to climate change remain largely uncertain, in part due to the high temporal heterogeneity of temperature sensitivity (apparent Q(10)) of Rs under a changing climate. Therefore, it is of critical importance to provide better insight into how Q(10) varies across multiple temporal scales. We investigated the diurnal, seasonal, and annual variabilities in the Q(10) of Rs using continuous Rs measurements (at hourly intervals) over six growing seasons in a mature temperate larch plantation in North China. We found that night-time values of Q(10) were slightly lower than daytime values. Large seasonal and annual fluctuations of Q(10) were observed, as illustrated by high coefficients of variation of 15.0% and 21.8%, respectively. The higher Q(10) in spring and autumn were primarily regulated by fine root growth and higher soil moisture after snow melt in spring, and leaf senescence in autumn. Lower Q(10) in summer may have been caused by limitations in substrate availability and microbial activity resulting from drought, which also caused a decoupling of Rs from soil temperature in summer. Furthermore, a bivariate nonlinear model incorporating both soil temperature and soil moisture best explained Q(10) variability. Generally, lower soil temperature and higher soil moisture lead to higher values of Q(10), indicating that climate warming could exert a negative effect on Q(10), partially offsetting the warming-induced increase in soil C loss. We provide long-term field experimental evidence that it would be inappropriate to estimate Rs on a multiyear scale using a fixed Q(10) value or a value obtained from one season and/or one year. Thus, we emphasize the importance of incorporating the seasonal and annual heterogeneities of Q(10) into C cycle model simulations under future climate change scenarios. (C) 2019 Elsevier B.V. All rights reserved. |
| WOS关键词 | HETEROTROPHIC RESPIRATION ; CO2 EFFLUX ; TERRESTRIAL ECOSYSTEMS ; NITROGEN ADDITION ; CARBON STORAGE ; CLIMATE-CHANGE ; COMPONENTS ; MOISTURE ; IMPACTS ; SYSTEM |
| 资助项目 | National Natural Science Foundation of China[41801056] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000481589100047 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/68720]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Peng, Shushi |
| 作者单位 | 1.Peking Univ, Coll Urban & Environm Sci, Sino French Inst Earth Syst Sci, Beijing 100871, Peoples R China 2.Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Natl Inst Environm Studies, Ctr Global Environm Res, Tsukuba, Ibaraki 3058506, Japan 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Tao,Song, Huanhuan,Wang, Zhaoqi,et al. Temperature sensitivity of soil respiration across multiple time scales in a temperate plantation forest[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,688:479-485. |
| APA | Yan, Tao.,Song, Huanhuan.,Wang, Zhaoqi.,Teramoto, Munemasa.,Wang, Jinsong.,...&Peng, Shushi.(2019).Temperature sensitivity of soil respiration across multiple time scales in a temperate plantation forest.SCIENCE OF THE TOTAL ENVIRONMENT,688,479-485. |
| MLA | Yan, Tao,et al."Temperature sensitivity of soil respiration across multiple time scales in a temperate plantation forest".SCIENCE OF THE TOTAL ENVIRONMENT 688(2019):479-485. |
入库方式： OAI收割
来源：地理科学与资源研究所
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