Differential responses of canopy nutrients to experimental drought along a natural aridity gradient
文献类型：期刊论文
| 作者 | Luo, Wentao; Zuo, Xiaoan2; Ma, Wang; Xu, Chong3; Li, Ang4; Yu, Qiang3; Knapp, Alan K.; Tognetti, Roberto1,7; Dijkstra, Feike A.; Li, Mai-He |
| 刊名 | ECOLOGY
 |
| 出版日期 | 2018 |
| 卷号 | 99期号:10页码:2230-2239 |
| 关键词 | intraspecific variation long-term aridity manipulative experiment nutritional response sensitivity short-term drought species turnover |
| ISSN号 | 0012-9658 |
| DOI | 10.1002/ecy.2444 |
| 文献子类 | Article |
| 英文摘要 | The allocation and stoichiometry of plant nutrients in leaves reflect fundamental ecosystem processes, biotic interactions, and environmental drivers such as water availability. Climate change will lead to increases in drought severity and frequency, but how canopy nutrients will respond to drought, and how these responses may vary with community composition along aridity gradients is poorly understood. We experimentally addressed this issue by reducing precipitation amounts by 66% during two consecutive growing seasons at three sites located along a natural aridity gradient. This allowed us to assess drought effects on canopy nitrogen (N) and phosphorus (P) concentrations in arid and semiarid grasslands of northern China. Along the aridity gradient, canopy nutrient concentrations were positively related to aridity, with this pattern was driven primarily by species turnover (i.e., an increase in the relative biomass of N- and P-rich species with increasing aridity). In contrast, drought imposed experimentally increased N but decreased P concentrations in plant canopies. These changes were driven by the combined effects of species turnover and intraspecific variation in leaf nutrient concentrations. In addition, the sensitivity of canopy N and P concentrations to drought varied across the three sites. Canopy nutrient concentrations were less affected by drought at drier than wetter sites, because of the opposing effects of species turnover and intraspecific variation, as well as greater drought tolerance for nutrient-rich species. These contrasting effects of long-term aridity vs. short-term drought on canopy nutrient concentrations, as well as differing sensitivities among sites in the same grassland biome, highlight the challenge of predicting ecosystem responses to future climate change. |
| 学科主题 | Ecology |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1939-9170 |
| WOS关键词 | CLIMATE-CHANGE ; INTRASPECIFIC VARIATION ; PRODUCTIVITY RESPONSES ; ECOSYSTEM CARBON ; NITROGEN ; SENSITIVITY ; LEAF ; WATER ; PRECIPITATION ; VARIABILITY |
| 语种 | 英语 |
| WOS记录号 | WOS:000446270400011 |
| 出版者 | WILEY |
| 资助机构 | Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41320104002, 41600302, 41622103] ; National Key Research and Development Program of China [2016YFC0500601, 2016YFC0500602] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/20619]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Knapp, Alan K.] Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 2.Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110164, Liaoning, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Gansu, Peoples R China 4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 10008, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 6.Knapp, Alan K.] Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA 7.Univ Molise, Dipartimento Agr Ambiente & Alimenti, I-86090 Campobasso, Italy 8.EFI, Project Ctr Mt Forests MOUNTFOR, I-38010 San Michele All Adige, Italy 9.Dijkstra, Feike A.] Univ Sydney, Sydney Inst Agr, Sch Life & Environm Sci, Sydney, NSW 2006, Australia 10.Swiss Fed Inst Forest Snow & Landscape Res WSL, Forest Dynam, CH-8903 Birmensdorf, Switzerland |
| 推荐引用方式 GB/T 7714 | Luo, Wentao,Zuo, Xiaoan,Ma, Wang,et al. Differential responses of canopy nutrients to experimental drought along a natural aridity gradient[J]. ECOLOGY,2018,99(10):2230-2239. |
| APA | Luo, Wentao.,Zuo, Xiaoan.,Ma, Wang.,Xu, Chong.,Li, Ang.,...&Han, Xingguo.(2018).Differential responses of canopy nutrients to experimental drought along a natural aridity gradient.ECOLOGY,99(10),2230-2239. |
| MLA | Luo, Wentao,et al."Differential responses of canopy nutrients to experimental drought along a natural aridity gradient".ECOLOGY 99.10(2018):2230-2239. |
入库方式： OAI收割
来源：植物研究所
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