Global evidence on the asymmetric response of gross primary productivity to interannual precipitation changes
文献类型：期刊论文
| 作者 | Wang, Yiheng2,3; Xiao, Jingfeng1; Li, Xing4; Niu, Shuli2,3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-03-25 |
| 卷号 | 814页码:9 |
| 关键词 | Asymmetric response Gross primary productivity Precipitation variability Non-linear Climate change Carbon dynamics |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2021.152786 |
| 通讯作者 | Niu, Shuli(sniu@igsnrr.ac.cn) |
| 英文摘要 | Understanding gross primary productivity (GPP) response to precipitation (PPT) changes is essential for predicting land carbon uptake under increasing PPT variability and extremes. Previous studies found that ecosystem GPP may have an asymmetric response to PPT changes, leading to the inconsistency of GPP gains in wet years compared to GPP declines in dry years. However, it is unclear how the asymmetric responses vary among vegetation types and under different PPT variabilities. This study evaluated the global patterns of asymmetries of GPP response to different PPT changes using two state-of-science global GPP datasets. The result shows that under mild PPT changes (vertical bar Delta PPT vertical bar <= 25%), grasslands, savannas, shrublands, and tundra show positive asymmetric responses (i.e., larger GPP gains in wet years than GPP losses in dry years), while other vegetation types show negative asymmetric responses (i.e., larger GPP losses in dry years than GPP gains in wet years). Conversely, all vegetation types show negative GPP asymmetric responses to moderate (25% < vertical bar Delta PPT vertical bar <= 50%) and extreme (vertical bar Delta PPT vertical bar > 50%) PPT changes. Thus, we propose a new non-linear asymmetric GPP-PPT model that incorporates three modes with regards to vegetation types. Meanwhile, we found that the spatial patterns of asymmetry were mainly driven by PPT amount and variability. Stronger and negative asymmetries were found in areas with smaller PPT amount and variability, while positive asymmetries were found in areas with higher PPT variability. These findings promote our understanding of carbon dynamics under increased PPT variability and extremes and provide new insights for land models to better predict future carbon uptake and its feedback to climate change. |
| WOS关键词 | NET PRIMARY PRODUCTION ; FUNCTIONAL DIVERSITY ; CLIMATE EXTREMES ; CARBON FLUXES ; TIME-SCALES ; VEGETATION ; DROUGHT ; INCREASES ; GRADIENT ; DRIVEN |
| 资助项目 | National Natural Science Foundation of China[31625006] ; National Natural Science Foundation of China[31988102] ; University of New Hampshire |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000743254000008 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; University of New Hampshire |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/169741]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Niu, Shuli |
| 作者单位 | 1.Univ New Hampshire, Earth Syst Res Ctr, Inst Study Earth Oceans & Space, Durham, NH 03824 USA 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Simulat, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing 100049, Peoples R China 4.Seoul Natl Univ, Res Inst Agr & Life Sci, Seoul, South Korea |
| 推荐引用方式 GB/T 7714 | Wang, Yiheng,Xiao, Jingfeng,Li, Xing,et al. Global evidence on the asymmetric response of gross primary productivity to interannual precipitation changes[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,814:9. |
| APA | Wang, Yiheng,Xiao, Jingfeng,Li, Xing,&Niu, Shuli.(2022).Global evidence on the asymmetric response of gross primary productivity to interannual precipitation changes.SCIENCE OF THE TOTAL ENVIRONMENT,814,9. |
| MLA | Wang, Yiheng,et al."Global evidence on the asymmetric response of gross primary productivity to interannual precipitation changes".SCIENCE OF THE TOTAL ENVIRONMENT 814(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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