Differential impacts of asymmetric winter warming and symmetric year-round warming on leaf nutrients and resorption in an alpine meadow
文献类型：期刊论文
| 作者 | Song, Huanhuan; Feng, Yanli; Zhang, Zhenhua; He, Jin-Sheng |
| 刊名 | FUNCTIONAL ECOLOGY
 |
| 出版日期 | 2025 |
| 卷号 | 39期号:9页码:2413 |
| 关键词 | asymmetric warming functional groups litter quality nutrient retranslocation Tibetan alpine meadow |
| 英文摘要 | Nutrient resorption before leaf senescence is an important nutrient conservation mechanism for plants that can maximize plant fitness and thus ecosystem functions and stability, especially when the ecosystems are subjected to warming. However, temperature increases non-uniformly among seasons, with stronger increases in winter than in other seasons, particularly in high-latitude regions such as the Tibetan Plateau. However, our understanding of plant nutrient resorption in response to asymmetric seasonal warming remains poor. We investigated the effects of long-term (10-year) symmetric year-round warming and asymmetric winter warming on nitrogen (N) and phosphorus (P) resorption in four plant functional groups (13 common grass, forb, legume and sedge species) in a Tibetan alpine meadow. Across functional groups, year-round warming decreased green and senesced leaf N and P concentrations, and N resorption efficiency (NRE), while winter warming increased senesced leaf P concentration and decreased P resorption efficiency (PRE). These responses were dependent on the functional groups, with grasses remaining stable, and legumes the most responsive. Legumes (e.g., Melilotoides archiducis-nicolai) senesced leaf N and P concentrations were reduced under year-round warming, whereas the P concentrations of forbs (e.g., Saussurea pulchra and Aster diplostephioides) increased in senesced leaves under winter warming, implying that legumes may have competitive superiority over other functional groups in N and P acquisition under year-round warming, whereas forbs were disadvantaged in terms of P acquisition under winter warming. NRE and NRE/PRE decreased under year-round warming, and PRE decreased and NRE/PRE increased under winter warming, implying that year-round warming may increase relative P limitation presumably due to a shift towards higher legume abundance in the plant community, which requires more P relative to N, while winter warming increases relative N limitation likely due to greater microbial carbon limitation (which constrains soil organic matter decomposition) and associated increases in N leaching. Our findings highlight the importance of considering differential responses to asymmetric winter warming and symmetric year-round warming when predicting the response of alpine plants to climate warming, which will provide new insights into plant community composition under climate warming.Read the free Plain Language Summary for this article on the Journal blog. |
| 源URL | [http://210.75.249.4/handle/363003/62393]  |
| 专题 | 西北高原生物研究所_中国科学院西北高原生物研究所 |
| 推荐引用方式 GB/T 7714 | Song, Huanhuan,Feng, Yanli,Zhang, Zhenhua,et al. Differential impacts of asymmetric winter warming and symmetric year-round warming on leaf nutrients and resorption in an alpine meadow[J]. FUNCTIONAL ECOLOGY,2025,39(9):2413. |
| APA | Song, Huanhuan,Feng, Yanli,Zhang, Zhenhua,&He, Jin-Sheng.(2025).Differential impacts of asymmetric winter warming and symmetric year-round warming on leaf nutrients and resorption in an alpine meadow.FUNCTIONAL ECOLOGY,39(9),2413. |
| MLA | Song, Huanhuan,et al."Differential impacts of asymmetric winter warming and symmetric year-round warming on leaf nutrients and resorption in an alpine meadow".FUNCTIONAL ECOLOGY 39.9(2025):2413. |
入库方式： OAI收割
来源：西北高原生物研究所
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。