Increasing drought sensitivity of plant photosynthetic phenology and physiology
文献类型：期刊论文
| 作者 | Wang, Yiheng2,4; Tian, Dashuan2; Xiao, Jingfeng1; Li, Xing3; Niu, Shuli2,4 |
| 刊名 | ECOLOGICAL INDICATORS
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 166页码:112469 |
| 关键词 | Phenology Photosynthetic physiology Drought Remote-sensing Earth system model |
| DOI | 10.1016/j.ecolind.2024.112469 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Understanding the impacts of drought on plant photosynthetic phenology and physiology is essential for accurately predicting annual gross primary productivity (GPP) and global carbon cycles. While droughts in different seasons can have different effects on plant growth and photosynthesis, a comprehensive understanding of how plant photosynthetic phenology and physiology respond to different seasons' droughts and their temporal changes is lacking. Here, we comprehensively evaluated the drought sensitivities of plant photosynthetic phenology and physiology and their temporal trends in the past two decades, using the start/end of the photosynthetic seasons (SOS/EOS) and peak GPP (GPPmax) derived from FLUXNET ground observations since the 1990s and remote-sensing data (2001-2020) over the globe. Our results show that spring droughts leads to delayed SOS in arid ecosystems and advanced SOS in humid ecosystems. In contrast, droughts in summer and autumn generally advance EOS. In addition, spring droughts decrease GPPmax in arid regions but increase it in humid regions, whereas summer droughts lead to significant GPPmax reductions. More importantly, we observed significant increases in the drought sensitivity of SOS, EOS, and GPPmax over the last two decades, which is driven by long-term decreases in background soil moisture and increases in atmospheric water deficit under climate change. Furthermore, these increasing trends were projected to persist in the 21st century under Shared Socioeconomic Pathways 8.5 and 4.0. Overall, our findings underscore the critical role of drought timing in shaping ecosystem responses and highlight the growing vulnerability of ecosystem phenology and physiology to drought, which may restrict the increases in terrestrial carbon uptake under warming. |
| WOS关键词 | GROSS PRIMARY PRODUCTIVITY ; CARBON-DIOXIDE ; CLIMATE-CHANGE ; MODELS ; VARIABILITY ; PRECIPITATION ; RESPONSES ; IMPACT |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:001295834800001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/206958]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 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.Seoul Natl Univ, Res Inst Agr & Life Sci, Seoul, South Korea 4.Univ Chinese Acad Sci, Sch Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yiheng,Tian, Dashuan,Xiao, Jingfeng,et al. Increasing drought sensitivity of plant photosynthetic phenology and physiology[J]. ECOLOGICAL INDICATORS,2024,166:112469. |
| APA | Wang, Yiheng,Tian, Dashuan,Xiao, Jingfeng,Li, Xing,&Niu, Shuli.(2024).Increasing drought sensitivity of plant photosynthetic phenology and physiology.ECOLOGICAL INDICATORS,166,112469. |
| MLA | Wang, Yiheng,et al."Increasing drought sensitivity of plant photosynthetic phenology and physiology".ECOLOGICAL INDICATORS 166(2024):112469. |
入库方式： OAI收割
来源：地理科学与资源研究所
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