Precipitation differentially regulates above- and belowground productivity in response to nitrogen enrichment in an alpine meadow
文献类型：期刊论文
| 作者 | Peng, Jinlong3,4; Zhang, Ruiyang4; Ma, Fangfang4; Quan, Quan4; Liao, Jiaqiang3,4; Zhou, Qingping1,2; Niu, Shuli1,3,4 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2024-11-15 |
| 卷号 | 358页码:110257 |
| 关键词 | Productivity Aboveground Belowground Carbon Nitrogen Water |
| DOI | 10.1016/j.agrformet.2024.110257 |
| 产权排序 | 1 |
| 英文摘要 | The fertilization effect of nitrogen (N) deposition on global productivity may be limited by water availability due to the coupling effect of N and water on ecosystem carbon cycling. However, it remains unclear whether this limitation is synchronized between above- and belowground productivity. Based on a long-term field manipulation experiment in an alpine meadow of the Qinghai-Tibetan Plateau, we found that precipitation played differential roles in regulating above- and belowground productivity responses to N addition. In experimental years with higher precipitation, N addition increased belowground productivity more. The main underlying mechanism was that higher precipitation mitigated excessive accumulation of soil inorganic N under N addition and shifted background plant community composition towards more N-favored species, which increased plant biomass allocation belowground and consequently stimulated the return of belowground productivity from N addition. In contrast, while N addition increased aboveground productivity, its effect didn't change with precipitation. This was mainly due to the trade-off between positive and negative effects of precipitation on the N response of aboveground productivity. Specifically, the precipitation-induced changes in soil inorganic N accumulation and background plant species composition reduced the return of aboveground productivity from N addition, while precipitation also offset this effect by mitigating the N-induced plant species loss, resulting in an overall insignificant effect of precipitation on the N response of aboveground productivity. Our findings imply that the trends of belowground productivity under N deposition can't be inferred solely from the easily measured aboveground parts, especially in the context of climate change. The work underscores an urgent need for more belowground measurements to improve the assessment of terrestrial carbon sinks. |
| WOS关键词 | TIBETAN PLATEAU ; PHOSPHORUS LIMITATION ; PLANT DIVERSITY ; SOIL CARBON ; DEPOSITION ; ECOSYSTEMS ; REDUCTION ; DYNAMICS ; WATER |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001334938200001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/208192]  |
| 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.Sichuan Zoige Alpine Wetland Ecosyst Natl Observat, Chengdu 610041, Peoples R China 2.Southwest Univ Nationalities, Inst Qinghai Tibetan Plateau, Chengdu 610041, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Peng, Jinlong,Zhang, Ruiyang,Ma, Fangfang,et al. Precipitation differentially regulates above- and belowground productivity in response to nitrogen enrichment in an alpine meadow[J]. AGRICULTURAL AND FOREST METEOROLOGY,2024,358:110257. |
| APA | Peng, Jinlong.,Zhang, Ruiyang.,Ma, Fangfang.,Quan, Quan.,Liao, Jiaqiang.,...&Niu, Shuli.(2024).Precipitation differentially regulates above- and belowground productivity in response to nitrogen enrichment in an alpine meadow.AGRICULTURAL AND FOREST METEOROLOGY,358,110257. |
| MLA | Peng, Jinlong,et al."Precipitation differentially regulates above- and belowground productivity in response to nitrogen enrichment in an alpine meadow".AGRICULTURAL AND FOREST METEOROLOGY 358(2024):110257. |
入库方式： OAI收割
来源：地理科学与资源研究所
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