Temperature sensitivity increases with decreasing soil carbon quality in forest ecosystems across northeast China
文献类型：期刊论文
| 作者 | Sun, Hongru3; Zhou, Guangsheng2; Xu, Zhenzhu; Wang, Yuhui; Liu, Xiaodi3; Yu, Hongying3; Ma, Quanhui3; Jia, Bingrui |
| 刊名 | CLIMATIC CHANGE
 |
| 出版日期 | 2020 |
| 卷号 | 160期号:3页码:373-384 |
| ISSN号 | 0165-0009 |
| 关键词 | Soil respiration Q(10) Basal respiration Carbon quality-temperature hypothesis Forest ecosystem China |
| DOI | 10.1007/s10584-019-02650-z |
| 文献子类 | Article |
| 英文摘要 | Soil respiration universally exhibits exponential temperature dependence (Respiration = R-0 e(beta T) & Q(10) = e(10 beta)), and temperature sensitivity (Q(10)) and soil organic carbon quality (as expressed by basal respiration rate at 0 degrees C, R-0) are the key parameters. Despite their importance for predicting the responses of forest ecosystems to climate change and quantifying the magnitude of soil CO2 efflux, the controlling factors of temperature sensitivity and soil carbon quality and their relationships among various forest types at a regional scale are as yet unknown. Here, we present a comprehensive analysis of Q(10), R-0, and their related variables by assembling 154 independent temperature-respiration functions under a common standard in forest ecosystems across northeast China (41 degrees 51 '-51 degrees 24 ' N, 118 degrees 37 '-129 degrees 48 ' E). The R-0 values ranged from 0.1700 to 2.1194 mu mol m(-2) s(-1) (mean = 0.8357 mu mol m(-2) s(-1)), and the Q(10) values from 1.29 to 5.42 (mean = 2.72). The relationships between Q(10) and R-0 could be best expressed with exponential decay equations (R-2 = 0.460-0.611, P < 0.01). They indicated that the temperature sensitivity decreased with increasing the soil carbon quality, and then tended to level off when the R-0 values were larger than ~1 mu mol m(-2) s(-1). Soil carbon quality (R-0) was closely related with the minimum soil temperature and its corresponding soil respiration rate during the growing season (R-2 = 0.696-0.857, P < 0.01). Such a synthesis is necessary to fully understand the spatial heterogeneity in the temperature sensitivity of soil respiration and to increase our ability to make robust predictions about the future carbon budget. |
| 学科主题 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
| 电子版国际标准刊号 | 1573-1480 |
| 出版地 | DORDRECHT |
| WOS关键词 | ORGANIC-MATTER DECOMPOSITION ; CYCLE FEEDBACKS ; CLIMATE-CHANGE ; RESPIRATION ; Q(10) ; VARIABILITY ; PATTERNS ; FRACTIONS ; LOSSES ; MODEL |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000538252000003 |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/21729]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Hongru,Zhou, Guangsheng,Xu, Zhenzhu,et al. Temperature sensitivity increases with decreasing soil carbon quality in forest ecosystems across northeast China[J]. CLIMATIC CHANGE,2020,160(3):373-384. |
| APA | Sun, Hongru.,Zhou, Guangsheng.,Xu, Zhenzhu.,Wang, Yuhui.,Liu, Xiaodi.,...&Jia, Bingrui.(2020).Temperature sensitivity increases with decreasing soil carbon quality in forest ecosystems across northeast China.CLIMATIC CHANGE,160(3),373-384. |
| MLA | Sun, Hongru,et al."Temperature sensitivity increases with decreasing soil carbon quality in forest ecosystems across northeast China".CLIMATIC CHANGE 160.3(2020):373-384. |
入库方式： OAI收割
来源：植物研究所
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