Effects of extreme drought on plant nutrient uptake and resorption in rhizomatous vs bunchgrass-dominated grasslands
文献类型：期刊论文
| 作者 | Luo, Wentao1; Xu, Chong2; Ma, Wang1; Yue, Xiyuan3; Liang, Xiaosa1; Zuo, Xiaoan3; Knapp, Alan K.4,5; Smith, Melinda D.4,5; Sardans, Jordi6,7; Dijkstra, Feike A.8 |
| 刊名 | OECOLOGIA
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 188期号:2页码:633-643 |
| 关键词 | Dominance/mass ratio hypothesis Dominant species Extreme drought Nutrient cycling |
| ISSN号 | 0029-8549 |
| DOI | 10.1007/s00442-018-4232-1 |
| 英文摘要 | Both the dominance and the mass ratio hypotheses predict that plant internal nutrient cycling in ecosystems is determined by the dominant species within plant communities. We tested this hypothesis under conditions of extreme drought by assessing plant nutrient (N, P and K) uptake and resorption in response to experimentally imposed precipitation reductions in two semiarid grasslands of northern China. These two communities shared similar environmental conditions, but had different dominant species-one was dominated by a rhizomatous grass (Leymus chinensis) and the other by a bunchgrass (Stipa grandis). Results showed that responses of N to drought differed between the two communities with drought decreasing green leaf N concentration and resorption in the community dominated by the rhizomatous grass, but not in the bunchgrass-dominated community. In contrast, negative effects of drought on green leaf P and K concentrations and their resorption efficiencies were consistent across the two communities. Additionally, in each community, the effects of extreme drought on soil N, P and K supply did not change synchronously with that on green leaf N, P and K concentrations, and senesced leaf N, P and K concentrations showed no response to extreme drought. Consistent with the dominance/mass ratio hypothesis, our findings suggest that differences in dominant species and their growth form (i.e., rhizomatous vs bunch grass) play an important nutrient-specific role in mediating plant internal nutrient cycling across communities within a single region. |
| 资助项目 | National Natural Science Foundation of China[41320104002] ; National Natural Science Foundation of China[41600302] ; National Key Research and Development Program of China[2016YFC0500601] ; National Key Research and Development Program of China[2016YFC0500602] ; US National Science Foundation Macrosystems Biology program ; European Research Council Synergy grant[ERC-SyG-2013-610028 IMBALANCE-P] ; Spanish Government[CGL2013-48074-P] ; Catalan Government[SGR 2014-274] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000445426400026 |
| 出版者 | SPRINGER |
| 源URL | [http://210.72.129.5/handle/321005/123173]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Wang, Zhengwen; Yu, Qiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, Erguna Forest Steppe Ecotone Res Stn, Shenyang 110164, Liaoning, Peoples R China 2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 10004, Peoples R China 3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou 730000, Gansu, Peoples R China 4.Colorado State Univ, Dept Biol, Ft Collins, CO 80523 USA 5.Colorado State Univ, Grad Degree Program Ecol, Ft Collins, CO 80523 USA 6.UAB, CSIC, CREAF, Global Ecol Unit, Bellaterra 08193, Catalonia, Spain 7.CREAF, Cerdanyola Del Valles 08193, Catalonia, Spain 8.Univ Sydney, Sch Life & Environm Sci, Sydney Inst Agr, Sydney, NSW 2006, Australia 9.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 10.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Wentao,Xu, Chong,Ma, Wang,et al. Effects of extreme drought on plant nutrient uptake and resorption in rhizomatous vs bunchgrass-dominated grasslands[J]. OECOLOGIA,2018,188(2):633-643. |
| APA | Luo, Wentao.,Xu, Chong.,Ma, Wang.,Yue, Xiyuan.,Liang, Xiaosa.,...&Han, Xingguo.(2018).Effects of extreme drought on plant nutrient uptake and resorption in rhizomatous vs bunchgrass-dominated grasslands.OECOLOGIA,188(2),633-643. |
| MLA | Luo, Wentao,et al."Effects of extreme drought on plant nutrient uptake and resorption in rhizomatous vs bunchgrass-dominated grasslands".OECOLOGIA 188.2(2018):633-643. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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