The role of climate, vegetation, and soil factors on carbon fluxes in Chinese drylands
文献类型：期刊论文
| 作者 | Liu, Zhaogang5; Chen, Zhi4,5; Yu, Guirui4,5; Zhang, Weikang5; Zhang, Tianyou3; Han, Lang2 |
| 刊名 | FRONTIERS IN PLANT SCIENCE
 |
| 出版日期 | 2023-02-09 |
| 卷号 | 14 |
| 关键词 | carbon flux dryland grassland climate change vegetation soil |
| DOI | 10.3389/fpls.2023.1060066 |
| 文献子类 | Article |
| 英文摘要 | Drylands dominate the trend and variability of the land carbon (C) sink. A better understanding of the implications of climate-induced changes in the drylands for C sink-source dynamics is urgently needed. The effect of climate on ecosystem C fluxes (gross primary productivity (GPP), ecosystem respiration (ER), and net ecosystem productivity (NEP)) in drylands has been extensively explored, but the roles of other concurrently changing factors, such as vegetation conditions and nutrient availability, remain unclear. We used eddy-covariance C-flux measurements from 45 ecosystems with concurrent information on climate (mean annual temperature (MAT) and mean annual precipitation (MAP)), soil (soil moisture (SM) and soil total nitrogen content (soil N)), and vegetation (leaf area index (LAI) and leaf nitrogen content (LNC)) factors to assess their roles in C fluxes. The results showed that the drylands in China were weak C sinks. GPP and ER were positively correlated with MAP, while they were negatively correlated with MAT. NEP first decreased and then increased with increasing MAT and MAP, and 6.6 degrees C and 207 mm were the boundaries for the NEP response to MAT and MAP, respectively. SM, soil N, LAI, and MAP were the main factors affecting GPP and ER. However, SM and LNC had the most important influence on NEP. Compared with climate and vegetation factors, soil factors (SM and soil N) had a greater impact on C fluxes in the drylands. Climate factors mainly affected C fluxes by regulating vegetation and soil factors. To accurately estimate the global C balance and predict the response of ecosystems to environmental change, it is necessary to fully consider the discrepant effects of climate, vegetation, and soil factors on C fluxes, as well as the cascade relationships between different factors. |
| WOS关键词 | TERRESTRIAL ECOSYSTEMS ; SEMIARID ECOSYSTEMS ; DOMINANT ROLE ; RESPONSES ; RESPIRATION ; VARIABILITY ; EXCHANGE ; DIOXIDE ; EXPANSION ; IMPACTS |
| WOS研究方向 | Plant Sciences |
| 出版者 | FRONTIERS MEDIA SA |
| WOS记录号 | WOS:000936105400001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/190308]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin, Peoples R China 2.Northwest A&F Univ, Coll Grassland Agr, Yangling, Peoples R China 3.Univ Chinese Acad Sci, Yanshan Earth Crit Zone & Surface Fluxes Res Stn, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Zhaogang,Chen, Zhi,Yu, Guirui,et al. The role of climate, vegetation, and soil factors on carbon fluxes in Chinese drylands[J]. FRONTIERS IN PLANT SCIENCE,2023,14. |
| APA | Liu, Zhaogang,Chen, Zhi,Yu, Guirui,Zhang, Weikang,Zhang, Tianyou,&Han, Lang.(2023).The role of climate, vegetation, and soil factors on carbon fluxes in Chinese drylands.FRONTIERS IN PLANT SCIENCE,14. |
| MLA | Liu, Zhaogang,et al."The role of climate, vegetation, and soil factors on carbon fluxes in Chinese drylands".FRONTIERS IN PLANT SCIENCE 14(2023). |
入库方式： OAI收割
来源：地理科学与资源研究所
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