Nitrogen addition increases the production and turnover of the lower-order roots but not of the higher-order roots of Bothriochloa ischaemum
文献类型：期刊论文
| 作者 | Wang, Guoliang; Xue, Sha; Liu, Fang; Liu, Guobin; Wang, GL (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi Provinc, Peoples R China. |
| 刊名 | PLANT AND SOIL
 |
| 出版日期 | 2017 |
| 卷号 | 415期号:1-2页码:423-434 |
| 关键词 | Grass Nitrogen Deposition Production Root Dynamic Root Order Turnover |
| ISSN号 | 0032-079X |
| DOI | 10.1007/s11104-016-3160-2 |
| 文献子类 | Article |
| 英文摘要 | Global nitrogen deposition alters grassland ecosystems. Whether added nitrogen changes root production and turnover by root orders is unclear. We compared the root dynamics across four root orders of Bothriochloa ischaemum treated with nitrogen addition (0-10 g N m(-2) year(-1)). The higher order roots exhibited lower production, turnover, number, length, and biomass, indicating a hierarchical system of B. ischaemum. At whole root system level, nitrogen addition increased length production, biomass production and turnover. At root order level, nitrogen addition increased length production, biomass production, and turnover of the first two order roots but not of the third- and fourth-order roots. Nitrogen addition reduced root biomass, and the belowground to aboveground biomass ratio, supporting the functional equilibrium hypothesis. The increased root production, turnover and decreased root number, length and biomass were mainly attributed to the increasing ammonium and nitrate nitrogen. Nitrogen addition increased the length production (7-30%), biomass production (10-34%) and turnover (8-35%) of the first two order roots but not of the higher order roots compared with the control pots. The discrepancy in root characteristics and their responses to nitrogen availability among root orders should be considered in establishing root dynamic models. |
| 学科主题 | Agriculture ; Plant Sciences |
| URL标识 | 查看原文 |
| 出版地 | DORDRECHT |
| 语种 | 英语 |
| WOS记录号 | WOS:000403495500031 |
| 出版者 | SPRINGER |
| 资助机构 | National Natural Science Foundation of China [41471438, 41371508]; Key Technologies R D Program [2015BAC01B03]; Chinese Academy of Sciences [KFZD-SW-306-2] ; National Natural Science Foundation of China [41471438, 41371508]; Key Technologies R D Program [2015BAC01B03]; Chinese Academy of Sciences [KFZD-SW-306-2] ; National Natural Science Foundation of China [41471438, 41371508]; Key Technologies R D Program [2015BAC01B03]; Chinese Academy of Sciences [KFZD-SW-306-2] ; National Natural Science Foundation of China [41471438, 41371508]; Key Technologies R D Program [2015BAC01B03]; Chinese Academy of Sciences [KFZD-SW-306-2] |
| 源URL | [http://ir.iswc.ac.cn/handle/361005/7982]  |
| 专题 | 水保所科研产出--SCI_2017--SCI |
| 通讯作者 | Wang, GL (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi Provinc, Peoples R China. |
| 作者单位 | Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi Provinc, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Guoliang,Xue, Sha,Liu, Fang,et al. Nitrogen addition increases the production and turnover of the lower-order roots but not of the higher-order roots of Bothriochloa ischaemum[J]. PLANT AND SOIL,2017,415(1-2):423-434. |
| APA | Wang, Guoliang,Xue, Sha,Liu, Fang,Liu, Guobin,&Wang, GL .(2017).Nitrogen addition increases the production and turnover of the lower-order roots but not of the higher-order roots of Bothriochloa ischaemum.PLANT AND SOIL,415(1-2),423-434. |
| MLA | Wang, Guoliang,et al."Nitrogen addition increases the production and turnover of the lower-order roots but not of the higher-order roots of Bothriochloa ischaemum".PLANT AND SOIL 415.1-2(2017):423-434. |
入库方式： OAI收割
来源：水土保持研究所
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