Aridity modulates spatiotemporal changes in carbon allocation to leaves in Northern Hemisphere grasslands
文献类型：期刊论文
| 作者 | Wu, Xiao1,2; Bai, Wenrui1,2; Gao, Chengxi1,2; Zhou, Wencun1,2; Lin, Shaozhi1; Dai, Junhu1; Wang, Huanjiong1 |
| 刊名 | INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
 |
| 出版日期 | 2026-02-01 |
| 卷号 | 146页码:105040 |
| 关键词 | Carbon allocation Grasslands Gross primary productivity Climate change Aridity |
| ISSN号 | 1569-8432 |
| DOI | 10.1016/j.jag.2025.105040 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Carbon (C) allocation, which refers to the partitioning of the primary products of photosynthesis into different functional pools, has important implications for plants in optimizing growth and development under variable environmental conditions. The large-scale spatiotemporal pattern of C allocation to leaves (Pleaf, the ratio of leaf C to gross primary productivity) in grasslands and its relationship with local aridity remain poorly understood. Here, we developed a remote sensing-based framework to quantify C allocation to leaves across grasslands in the Northern Hemisphere (north of 23.5 degrees N) from 2001 to 2019. By integrating two leaf area index (LAI) products (GLASS and GLOBMAP), two gross primary productivity (GPP) datasets (GLASS and FluxSat), and two global specific leaf area (SLA) maps, we derived pixel-level estimates of Pleaf. We then analyzed the spatial patterns, temporal trends, and climatic drivers of Pleaf, as well as their relationship with local aridity. Our results revealed that Pleaf ranged from 0.008 to 0.455, with significantly lower mean values in arid regions (0.067) than in humid regions (0.089). Over 60 % of grassland pixels exhibited increasing Pleaf, particularly in hyper-arid and arid regions. The impact of CO2 concentration exceeds that of temperature, precipitation, and radiation, emerging as the dominant factor driving interannual variations in Pleaf. Our results underscore the role of aridity in modulating C allocation to leaves and enhance our understanding of how climate change affects C allocation to leaves in Northern Hemisphere grasslands. |
| URL标识 | 查看原文 |
| WOS关键词 | NET PRIMARY PRODUCTION ; BIOMASS ALLOCATION ; ROOT ; PRODUCTIVITY ; DYNAMICS ; CO2 ; VARIABILITY ; TRAITS ; MODELS ; GROWTH |
| WOS研究方向 | Remote Sensing |
| 语种 | 英语 |
| WOS记录号 | WOS:001662553500001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219706]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Wang, Huanjiong |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, 11A,Datun Rd, Beijing 100101, Peoples R China; 2.Univ Chinese Acad Sci, 19A,Yuquan Rd, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Xiao,Bai, Wenrui,Gao, Chengxi,et al. Aridity modulates spatiotemporal changes in carbon allocation to leaves in Northern Hemisphere grasslands[J]. INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,2026,146:105040. |
| APA | Wu, Xiao.,Bai, Wenrui.,Gao, Chengxi.,Zhou, Wencun.,Lin, Shaozhi.,...&Wang, Huanjiong.(2026).Aridity modulates spatiotemporal changes in carbon allocation to leaves in Northern Hemisphere grasslands.INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,146,105040. |
| MLA | Wu, Xiao,et al."Aridity modulates spatiotemporal changes in carbon allocation to leaves in Northern Hemisphere grasslands".INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION 146(2026):105040. |
入库方式： OAI收割
来源：地理科学与资源研究所
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