The Dual Role of NPP in Mediating and Moderating Climate-Soil Carbon Pathways Under Warming and Drought Across European Ecosystems
文献类型：期刊论文
| 作者 | Lu, Yang2; Yang, Lin1; Zhou, Chenghu2,3 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2026-02-24 |
| 卷号 | 32期号:2页码:e70766 |
| 关键词 | drought net primary productivity soil carbon trade-off warming |
| ISSN号 | 1354-1013 |
| DOI | 10.1111/gcb.70766 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | Soil carbon dynamics in response to climate change hold critical implications for global carbon cycling and ecosystem resilience. Net primary productivity (NPP), the dominant source of soil carbon inputs, serves dual functions: it mediates climate effects via carbon input fluxes and moderates them by altering the intensity of climate impacts on soil carbon. In this study, we assembled a dataset of soil organic carbon (SOC; hereafter OC) and its fractions-particulate organic carbon (POC) and mineral-associated organic carbon (MAOC)-from 8147 repeated sampling sites across the European region in 2009 and 2018. Using structural equation modeling with joint mediation and moderation analysis across three major land uses, we identified two functionally distinct, context-dependent roles of NPP. NPP acts as a mediator: favorable climate increases belowground inputs and promotes OC accumulation, primarily through the formation and stabilization of MAOC. NPP also acts as a moderator: it amplifies temperature's negative impacts on soil carbon, with POC being most sensitive to warming. The effects of NPP on the relationship between climatic moisture and soil carbon exhibited a nonlinear reversal: under humid conditions, NPP mainly reduced decomposition-driven carbon loss, whereas under drought conditions, it enhanced input-driven carbon accumulation. In contrast, soil moisture consistently showed a stable positive influence, continuously supporting carbon inputs and accumulation. Cross-ecosystem comparisons show that forests rely more strongly on NPP-driven input and regulatory pathways, whereas in cropland the mediating and moderating roles of NPP are comparatively weaker, making soil carbon more directly influenced by climate. Overall, NPP plays a dual role in the climate-soil carbon pathway: as both a source of input enhancement and a marginal amplifier, representing a functional trade-off under climate change scenarios. |
| URL标识 | 查看原文 |
| WOS关键词 | ORGANIC-MATTER ; HETEROTROPHIC RESPIRATION ; TEMPERATURE ; DECOMPOSITION ; MOISTURE ; STABILIZATION ; CONSERVATION ; MANAGEMENT ; RESPONSES ; DYNAMICS |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001698738600001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221227]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Yang, Lin |
| 作者单位 | 1.Renmin Univ China, Sch Publ Adm & Policy, Beijing, Peoples R China; 2.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing, Peoples R China; 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lu, Yang,Yang, Lin,Zhou, Chenghu. The Dual Role of NPP in Mediating and Moderating Climate-Soil Carbon Pathways Under Warming and Drought Across European Ecosystems[J]. GLOBAL CHANGE BIOLOGY,2026,32(2):e70766. |
| APA | Lu, Yang,Yang, Lin,&Zhou, Chenghu.(2026).The Dual Role of NPP in Mediating and Moderating Climate-Soil Carbon Pathways Under Warming and Drought Across European Ecosystems.GLOBAL CHANGE BIOLOGY,32(2),e70766. |
| MLA | Lu, Yang,et al."The Dual Role of NPP in Mediating and Moderating Climate-Soil Carbon Pathways Under Warming and Drought Across European Ecosystems".GLOBAL CHANGE BIOLOGY 32.2(2026):e70766. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。