Urea addition and litter manipulation alter plant community and soil microbial community composition in a Kobresia humilis meadow
文献类型：期刊论文
| 作者 | Wang, Changting1; Wang, Genxu2 ; Wang, Yong1; Rafique, Rashid3; Ma, Li1; Hu, Lei1; Luo, Yiqi3
|
| 刊名 | EUROPEAN JOURNAL OF SOIL BIOLOGY
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 70页码:7-14 |
| 关键词 | Litter biomass Aboveground biomass (AGB) Urea addition Soil microbial community Phospholipid fatty acid (PLFA) Alpine meadow |
| ISSN号 | 1164-5563 |
| 通讯作者 | Wang, Changting |
| 英文摘要 | Overgrazing and climate change strongly affect alpine meadows by decreasing the plant community biomass and deteriorating the soil environment. To understand how the plant community and soil microbial community structure respond to grazing and N deposition, we conducted an experiment to remove or maintain the plant litter under the chronic addition of N in the Haibei Alpine Meadow in 2005. The experiment included four treatments: added N (+N, 20 g m(-2)) with the litter removed (LR), +N with the litter left intact (LI), LI without N addition (N), and LR with N. Soil samples were collected at depths of 0-10 and 10-20 cm, and the following parameters were measured: 1) aboveground biomass (AGB) and litter biomass and 2) microbial community composition and content. Overall, the AGB and litter biomass significantly increased by 45.85% and 50.42% in response to N addition, whereas litter removal increased the AGB by 52.96%. The addition of urea N significantly decreased the PLFA content of the bacterial, gram-positive (G(+)), gram-negative (G(-)) at a soil of 0-10 cm in the LI and LR treatments by 64.87%, 61.82%, 76.07% and 64.86%, 53.02%, 51.44%, respectively. However, the PLFA content of the bacterial increased from 37.09 to 53.54 nmol g(-1) and from 37.09 to 62.05 nmol g(-1) at a depth of 10-20 cm for the +N + LI and +N + LR treatments compare to the LR+(-)N treatment, respectively. In addition, the total PLFAs in the LR+(-)N treatment significantly increased by 50.61% at a depth of 0-10 cm but decreased from 121.62 to 4231 nmol g(-1) at a depth of 10-20 cm relative to the LI+(-)N treatment. Using PLFA as a biomarker, we detected that G(-) bacteria and total PLFA generally increased with increasing soil depth in the +N plots. However, the content of G(-) was the highest at a depth of 0-10 cm and the lowest at a depth of 10-20 cm in the LR plots. The modification of soil microbial biomass at a depth of 0-10 cm was induced by the bottom-up effect of changes in soil nutrient contents and using ability, which were driven by N addition and litter manipulation. Thus, different soil depths with different soil nutrient conditions resulted in a strong microbial community composition gradient. (C) 2015 Published by Elsevier Masson SAS. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Ecology ; Soil Science |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Agriculture |
| 关键词[WOS] | FATTY-ACID ANALYSIS ; ARBUSCULAR MYCORRHIZAL FUNGI ; NITROGEN ADDITION ; ALPINE MEADOW ; ENZYME-ACTIVITIES ; UPLAND GRASSLAND ; BIOMASS ; FERTILIZATION ; BIOTA ; PRODUCTIVITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000362147900002 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/11029]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Southwest Univ Nationalities, Coll Life Sci & Technol, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Univ Oklahoma, Dept Microbiol & Plant Biol, Norman, OK 73019 USA |
| 推荐引用方式 GB/T 7714 | Wang, Changting,Wang, Genxu,Wang, Yong,et al. Urea addition and litter manipulation alter plant community and soil microbial community composition in a Kobresia humilis meadow[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2015,70:7-14. |
| APA | Wang, Changting.,Wang, Genxu.,Wang, Yong.,Rafique, Rashid.,Ma, Li.,...&Luo, Yiqi.(2015).Urea addition and litter manipulation alter plant community and soil microbial community composition in a Kobresia humilis meadow.EUROPEAN JOURNAL OF SOIL BIOLOGY,70,7-14. |
| MLA | Wang, Changting,et al."Urea addition and litter manipulation alter plant community and soil microbial community composition in a Kobresia humilis meadow".EUROPEAN JOURNAL OF SOIL BIOLOGY 70(2015):7-14. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。