Impacts of leguminous shrub encroachment on neighboring grasses include transfer of fixed nitrogen
文献类型：期刊论文
| 作者 | Yang, Jun-Jie1; Zhang, Hai-Yang1,2; Yu, Qiang1,3; Lu, Xiao-Tao1; Trumbore, Susan E.2; Han, Xing-Guo1 |
| 刊名 | OECOLOGIA
 |
| 出版日期 | 2016-04-01 |
| 卷号 | 180期号:4页码:1213-1222 |
| 关键词 | Species-specific Nitrogen Transfer Shrub Encroachment Plant Facilitation Plant Competition |
| ISSN号 | 0029-8549 |
| DOI | 10.1007/s00442-015-3538-5 |
| 英文摘要 | Shrub encroachment induced by global change and human disturbance strongly affects ecosystem structure and function. In this study, we explore the degree to which invading leguminous shrubs affected neighboring grasses, including via the transfer of fixed nitrogen (N). We measured N concentrations and natural abundance N-15 of shoot tissues from three dominant grasses from different plant functional groups across seven distances along a local transect (up to 500 cm) to the leguminous shrub, Caragana microphylla. C. microphylla did transfer fixed N to neighboring grasses, but the amount and distance of N transferred were strongly species-specific. Shoot N concentrations decreased significantly with distance from C. microphylla, for a rhizomatous grass, Leymus chinensis, and a bunchgrass, Achnatherum sibiricum. However, N concentrations of another bunchgrass, Stipa grandis, were higher only directly underneath the shrub canopy. Shoot delta N-15 values of L. chinensis were enriched up to 500 cm from the shrub, but for S. grandis were enriched only below the shrub canopy. In contrast, delta N-15 of A. sibiricum did not change along the 500-cm transect. Our results indicated the rhizomatous grass transferred fixed N over long distances while bunchgrasses did not. The presence of C. microphylla increased the shoot biomass of L. chinensis but decreased that of S. grandis and A. sibiricum. These findings highlight the potential role of nutrient-acquisition strategies of neighboring grasses in moderating the interspecific variation of fixed N transfer from the leguminous shrub. Overall, leguminous shrubs have either positive or negative effects on the neighboring grasses and dramatically affect plant community composition and structure. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000373186100028 |
| 出版者 | SPRINGER |
| 源URL | [http://210.72.129.5/handle/321005/122565]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Zhang, Hai-Yang; Yu, Qiang; Han, Xing-Guo |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 2.Max Planck Inst Biogeochem, D-07745 Jena, Germany 3.Colorado State Univ, Dept Biol, Grad Degree Program Ecol, Ft Collins, CO 80523 USA |
| 推荐引用方式 GB/T 7714 | Yang, Jun-Jie,Zhang, Hai-Yang,Yu, Qiang,et al. Impacts of leguminous shrub encroachment on neighboring grasses include transfer of fixed nitrogen[J]. OECOLOGIA,2016,180(4):1213-1222. |
| APA | Yang, Jun-Jie,Zhang, Hai-Yang,Yu, Qiang,Lu, Xiao-Tao,Trumbore, Susan E.,&Han, Xing-Guo.(2016).Impacts of leguminous shrub encroachment on neighboring grasses include transfer of fixed nitrogen.OECOLOGIA,180(4),1213-1222. |
| MLA | Yang, Jun-Jie,et al."Impacts of leguminous shrub encroachment on neighboring grasses include transfer of fixed nitrogen".OECOLOGIA 180.4(2016):1213-1222. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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