Amazon rainforests are rejuvenating their canopies by producing more photosynthetically efficient young leaves under climate change
文献类型：期刊论文
| 作者 | Yang, Xueqin2; Tian, Jie2; Ciais, Philippe3; Zhou, Liming4; Reich, Peter B.5,6,7; Wu, Jin8,9,10; Shang, Jiali11; Chave, Jerome12; Lamour, Julien12; Marechaux, Isabelle13 |
| 刊名 | NATURE PLANTS
 |
| 出版日期 | 2026-03-01 |
| 卷号 | 12期号:3 |
| ISSN号 | 2055-026X |
| DOI | 10.1038/s41477-026-02240-9 |
| 产权排序 | 34 |
| 文献子类 | Article |
| 英文摘要 | Leaf age structure strongly regulates canopy photosynthesis in Amazon rainforests yet its large-scale patterns and dynamics remain poorly understood. Here we map the fraction of leaf area of photosynthetically efficient young leaves (fyoung) using remote sensing data and assess its spatiotemporal variability from 2001 to 2023. We find that fyoung varies markedly with elevation and canopy height: tall or mountain forests (canopy >= 32 m or elevation >= 300 m) exhibit higher fyoung than short or lowland forests, reflecting higher leaf turnover driven by stronger radiation, greater atmospheric dryness and longer dry seasons. Across the basin, fyoung increased significantly in 85.2% of forests during 2001-2023, linked to decreasing precipitation, rising sunlight, intensifying atmospheric dryness and lengthening dry seasons. This widespread trend towards more juvenile leaves is projected to persist under future climate change. Our findings reveal a fundamental shift in Amazon leaf age structure and highlight its importance for predicting future photosynthetic responses in a warmer, drier climate. |
| URL标识 | 查看原文 |
| WOS关键词 | LEAF NITROGEN CONCENTRATION ; FUNCTIONAL TRAITS ; EVERGREEN FORESTS ; MODEL ; AGE ; SEASONALITY ; PHENOLOGY ; GROWTH ; AREA ; LIGHT |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001711331400001 |
| 出版者 | NATURE PORTFOLIO |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221201]  |
| 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 | Chen, Xiuzhi |
| 作者单位 | 1.Peking Univ, Sch Urban Planning & Design, Shenzhen, Peoples R China; 2.Sun Yat Sen Univ, Guangdong Prov Data Ctr Terr & Marine Ecosyst Carb, Sch Atmospher Sci, Sch Ecol, Zhuhai, Peoples R China; 3.Univ Paris Saclay, Lab Sci Climat & Environm IPSL, CEA CNRS UVSQ, Gif Sur Yvette, France; 4.SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY USA; 5.Univ Michigan, Inst Global Change Biol, Ann Arbor, MI USA; 6.Univ Michigan, Sch Environm & Sustainabil, Ann Arbor, MI USA; 7.Univ Minnesota, Dept Forest Resources, St Paul, MN USA; 8.Univ Hong Kong, Sch Biol Sci, Hong Kong, Peoples R China; 9.Univ Hong Kong, Inst Climate & Carbon Neutral, Hong Kong, Peoples R China; 10.CUHK, State Key Lab Agrobiotechnol, Hong Kong, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Yang, Xueqin,Tian, Jie,Ciais, Philippe,et al. Amazon rainforests are rejuvenating their canopies by producing more photosynthetically efficient young leaves under climate change[J]. NATURE PLANTS,2026,12(3). |
| APA | Yang, Xueqin.,Tian, Jie.,Ciais, Philippe.,Zhou, Liming.,Reich, Peter B..,...&Chen, Xiuzhi.(2026).Amazon rainforests are rejuvenating their canopies by producing more photosynthetically efficient young leaves under climate change.NATURE PLANTS,12(3). |
| MLA | Yang, Xueqin,et al."Amazon rainforests are rejuvenating their canopies by producing more photosynthetically efficient young leaves under climate change".NATURE PLANTS 12.3(2026). |
入库方式： OAI收割
来源：地理科学与资源研究所
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