Knowledge Management System Of Institute Of Botany,CAS
| Linkages of plant stoichiometry to ecosystem production and carbon fluxes with increasing nitrogen inputs in an alpine steppe | |
Peng, Yunfeng; Li, Fei1; Zhou, Guoying2,3; Fang, Kai1; Zhang, Dianye1; Li, Changbin1,2,3; Yang, Guibiao1; Wang, Guanqin1; Wang, Jun1; Yang, Yuanhe1
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| 2017 | |
| 发表期刊 | GLOBAL CHANGE BIOLOGY
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| ISSN | 1354-1013 |
| 卷号 | 23期号:12页码:5249-5259 |
| 摘要 | Unprecedented levels of nitrogen (N) have entered terrestrial ecosystems over the past century, which substantially influences the carbon (C) exchange between the atmosphere and biosphere. Temperature and moisture are generally regarded as themajor controllers over the N effects on ecosystem C uptake and release. N-phosphorous (P) stoichiometry regulates the growth and metabolisms of plants and soil organisms, thereby affecting many ecosystem C processes. However, it remains unclear how the N-induced shift in the plant N:P ratio affects ecosystem production and C fluxes and its relative importance. We conducted a field manipulative experiment with eight N addition levels in a Tibetan alpine steppe and assessed the influences of N on aboveground net primary production (ANPP), gross ecosystem productivity (GEP), ecosystem respiration (ER), and net ecosystem exchange (NEE); we used linear mixed-effects models to further determine the relative contributions of various factors to the N-induced changes in these parameters. Our results showed that the ANPP, GEP, ER, and NEE all exhibited nonlinear responses to increasing N additions. Further analysis demonstrated that the plant N:P ratio played a dominate role in shaping these C exchange processes. There was a positive relationship between the N-induced changes in ANPP (Delta ANPP) and the plant N:P ratio (Delta N:P), whereas the GEP, ER, and NEE exhibited quadratic correlations with the Delta N:P. In contrast, soil temperature and moisture were only secondary predictors for the changes in ecosystem production and C fluxes along the N addition gradient. These findings highlight the importance of plant N:P ratio in regulating ecosystem C exchange, which is crucial for improving our understanding of C cycles under the scenarios of global N enrichment. |
| 关键词 | carbon (C) cycle ecosystem respiration gross ecosystem productivity net ecosystem carbon exchange nitrogen addition nitrogen:phosphorous (N:P) ratio N-P imbalance |
| 学科领域 | Chemistry ; Food Science & Technology ; Nutrition & Dietetics |
| DOI | 10.1016/j.foodchem.2016.09.083 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | TERRESTRIAL ECOSYSTEMS ; SOIL RESPIRATION ; TIBETAN PLATEAU ; CO2 EFFLUX ; RESPONSES ; PHOSPHORUS ; DEPOSITION ; TEMPERATE ; LIMITATION ; BIOMASS |
| WOS记录号 | WOS:000386984100061 |
| 出版者 | WILEY |
| 文献子类 | Article |
| 出版地 | HOBOKEN |
| EISSN | 1365-2486 |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31400417, 31670482] |
| 作者邮箱 | yhyang@ibcas.ac.cn |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/22184 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining, Qinghai, Peoples R China 4.Chinese Acad Sci, Key Lab Tibetan Med Res, Xining, Qinghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, Yunfeng,Li, Fei,Zhou, Guoying,et al. Linkages of plant stoichiometry to ecosystem production and carbon fluxes with increasing nitrogen inputs in an alpine steppe[J]. GLOBAL CHANGE BIOLOGY,2017,23(12):5249-5259. |
| APA | Peng, Yunfeng.,Li, Fei.,Zhou, Guoying.,Fang, Kai.,Zhang, Dianye.,...&Yang, Yuanhe.(2017).Linkages of plant stoichiometry to ecosystem production and carbon fluxes with increasing nitrogen inputs in an alpine steppe.GLOBAL CHANGE BIOLOGY,23(12),5249-5259. |
| MLA | Peng, Yunfeng,et al."Linkages of plant stoichiometry to ecosystem production and carbon fluxes with increasing nitrogen inputs in an alpine steppe".GLOBAL CHANGE BIOLOGY 23.12(2017):5249-5259. |
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