Nitrogen rather than phosphorous addition alters the asymmetric responses of primary productivity to precipitation variability across a precipitation gradient on the northern Tibetan Plateau
文献类型：期刊论文
| 作者 | Yu, Jialuo; Hou, Ge; Shi, Peili; Zong, Ning; Peng, Jinlong |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-01-10 |
| 卷号 | 907页码:10 |
| 关键词 | Asymmetric responses Aboveground net primary productivity Nutrition addition Functional groups Precipitation gradient Tibetan plateau |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2023.167856 |
| 通讯作者 | Shi, Peili(shipl@igsnrr.ac.cn) |
| 英文摘要 | Understanding the response of alpine grassland productivity to precipitation fluctuations is essential for assessing the future changes of ecosystem services. However, the underlying mechanism by which grassland productivity responds to wet and dry years after nitrogen (N) or/and phosphorus (P) nutrient addition remains unclear. In this study, we investigated the dynamics of plant communities based on eight-year N or/and P addition gradient experiments in four grassland types across a precipitation gradient on the north Tibetan Plateau. The asymmetry index (AI) was used to evaluate the responses of aboveground net primary productivity (ANPP) to precipitation fluctuations where AI > 0 indicates a greater increase of ANPP in wet years compared to the decline in dry years, and AI < 0 indicates a greater decline of ANPP in dry years compared to the increase in wet years. Our results showed that the AI values at community level in four natural grasslands were non-significant trend across the precipitation gradient, and showed slightly negative asymmetry, suggesting that the increase of ANPP in wet years was less than the decrease in dry years. N addition resulted in a significant decrease in community-level AI values with increasing mean annual precipitation (MAP), indicating that improved nutrient availability may favor the recovery of productivity in drier grasslands in wet years. At the functional group level, nutrient addition resulted in a significant decrease in the AI values of grasses and legumes and an increase in the AI values of forbs as MAP increased. Furthermore, the coupling of nutrients with precipitation can influence the productivity responses to precipitation changes by affecting soil nutrient availability and species richness. This research provides new insights into better predicting vegetation activity on N deposition rates and precipitation changes exacerbated in the context of climate change. |
| WOS关键词 | SEMIARID ECOSYSTEMS ; CLIMATE ; GRASSLANDS ; LIMITATION ; DROUGHT ; BIOMASS ; BIODIVERSITY ; STABILITY ; DYNAMICS ; EVENTS |
| 资助项目 | central government leading project for Tibetan science and technology development[XZ202202YD0028C] ; science and technology program of the Tibet Autonomous Region[XZ202101ZD0007G] ; National Natural Science Foundation of China[31870406] ; National Natural Science Foundation of China[42071066] ; West Light Foundation of the Chinese Academy of Sciences ; Natural Science Foundation of Tibet Autonomous Region[XZ202201ZR0026G] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001106105100001 |
| 出版者 | ELSEVIER |
| 资助机构 | central government leading project for Tibetan science and technology development ; science and technology program of the Tibet Autonomous Region ; National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; Natural Science Foundation of Tibet Autonomous Region |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200520]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Shi, Peili |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Jialuo,Hou, Ge,Shi, Peili,et al. Nitrogen rather than phosphorous addition alters the asymmetric responses of primary productivity to precipitation variability across a precipitation gradient on the northern Tibetan Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,907:10. |
| APA | Yu, Jialuo,Hou, Ge,Shi, Peili,Zong, Ning,&Peng, Jinlong.(2024).Nitrogen rather than phosphorous addition alters the asymmetric responses of primary productivity to precipitation variability across a precipitation gradient on the northern Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,907,10. |
| MLA | Yu, Jialuo,et al."Nitrogen rather than phosphorous addition alters the asymmetric responses of primary productivity to precipitation variability across a precipitation gradient on the northern Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 907(2024):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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