Aridity modifies the responses of plant stoichiometry to global warming and nitrogen deposition in semi-arid steppes
文献类型：期刊论文
| 作者 | Yan, Chuang3,4,5; Liu, Zunchi6; Yuan, Zhiyou1,4; Shi, Xinrong1,4; Lock, T. Ryan2; Kallenbach, Robert L.2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2022-07-20 |
| 卷号 | 831页码:10 |
| 关键词 | Aridity gradient Experimental warming Nitrogen addition Plant stoichiometry Steppe type |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2022.154807 |
| 通讯作者 | Yuan, Zhiyou(zyyuan@ms.iswc.ac.cn) |
| 英文摘要 | Global warming and nitrogen (N) deposition arc known to unbalance the stoichiometry of carbon (C), N, and phosphorus (P) in terrestrial plants, but it is unclear how water availability regulates their effects along a natural aridity gradient. Here, we conducted manipulative experiments to determine the effects of experimental warming (WT) and N addition (NT) on plant stoichiometry in desert, typical, and meadow steppes with decreasing aridity. WP elevated air temperatures by 1.2-2.9 degrees C using open-top chambers. WT increased forb C:N ratio and thus its N use efficiency and competitiveness in desert steppes, whereas WT reduced forb C:N and C:P ratios in typical and meadow steppes. Plant N:P ratio, which reflects nutrient limitation, was reduced by WI in desert steppes but not for typical or meadow steppes. NT reduced plant C:N ratios and increased N:P ratios in all three steppes. NT reduced forb C:P ratios in desert and typical steppes, but it enhanced grass C:P ratio in meadow steppes, indicating an enhancement of P use efficiency and competitiveness of grasses in wet steppes. WT and NT had synergetic effects on grass C:N and C:P ratios in all three steppes, which helps to increase grasses' productivity. Under WI' or NT, the changes in community C:N ratio were positively correlated with increasing aridity, indicating that aridity increases plants N use efficiency. However, aridity negatively affected the changes in N:P ratios under NT but not WT, which suggests that aridity mitigates P limitation induced by N deposition. Our results imply that warming could shift the dominant functional group into forbs in dry steppes due to altered stoichiometry, whereas grasses become dominated plants in wet steppes under increasing N deposition. We suggest that global changes might break the stoichiometric balance of plants and water availability could strongly modify such processes in semi-arid steppes. |
| WOS关键词 | CLIMATE-CHANGE ; NUTRIENT-AVAILABILITY ; TERRESTRIAL PLANTS ; WATER AVAILABILITY ; CNP STOICHIOMETRY ; MINERAL-NUTRITION ; USE-EFFICIENCY ; PHOSPHORUS ; GRASSLAND ; PRECIPITATION |
| 资助项目 | National Key Research and Development Program of China[2016YFA0600801] ; Natural Science Basic Research Plan in Shaanxi Province of China[2018JZ3002] ; Hundred Talents Program of Shaanxi Province[A289021701] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000892738200001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; Hundred Talents Program of Shaanxi Province |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/187846]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yuan, Zhiyou |
| 作者单位 | 1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 2.Univ Missouri, Coll Agr Foot & Nat Resources, Div Plant Sci & Technol, 108 Waters Hall, Columbia, MO 65211 USA 3.Henan Acad Sci, Inst Geogruph Sci, Zhemphou 450052, Henan, Peoples R China 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Fanning Loess P, Yangling 712100, Shaanxi, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Chuang,Liu, Zunchi,Yuan, Zhiyou,et al. Aridity modifies the responses of plant stoichiometry to global warming and nitrogen deposition in semi-arid steppes[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,831:10. |
| APA | Yan, Chuang,Liu, Zunchi,Yuan, Zhiyou,Shi, Xinrong,Lock, T. Ryan,&Kallenbach, Robert L..(2022).Aridity modifies the responses of plant stoichiometry to global warming and nitrogen deposition in semi-arid steppes.SCIENCE OF THE TOTAL ENVIRONMENT,831,10. |
| MLA | Yan, Chuang,et al."Aridity modifies the responses of plant stoichiometry to global warming and nitrogen deposition in semi-arid steppes".SCIENCE OF THE TOTAL ENVIRONMENT 831(2022):10. |
入库方式： OAI收割
来源：地理科学与资源研究所
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