Knowledge Management System Of Institute Of Botany,CAS
| Nitrogen deposition weakens plant-microbe interactions in grassland ecosystems | |
Wei, Cunzheng1; Yu, Qiang2,3; Bai, Edith2; Lu, Xiaotao2; Li, Qi2; Xia, Jianyang4,5; Kardol, Paul4,5; Liang, Wenju2; Wang, Zhengwen2; Han, Xingguo2
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| 2013 | |
| 发表期刊 | GLOBAL CHANGE BIOLOGY
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| ISSN | 1354-1013 |
| 卷号 | 19期号:12页码:3688-3697 |
| 摘要 | Soil carbon (C) and nitrogen (N) stoichiometry is a main driver of ecosystem functioning. Global N enrichment has greatly changed soil C:N ratios, but how altered resource stoichiometry influences the complexity of direct and indirect interactions among plants, soils, and microbial communities has rarely been explored. Here, we investigated the responses of the plant-soil-microbe system to multi-level N additions and the role of dissolved organic carbon (DOC) and inorganic N stoichiometry in regulating microbial biomass in semiarid grassland in northern China. We documented a significant positive correlation between DOC and inorganic N across the N addition gradient, which contradicts the negative nonlinear correlation between nitrate accrual and DOC availability commonly observed in natural ecosystems. Using hierarchical structural equation modeling, we found that soil acidification resulting from N addition, rather than changes in the plant community, was most closely related to shifts in soil microbial community composition and decline of microbial respiration. These findings indicate a down-regulating effect of high N availability on plant-microbe interactions. That is, with the limiting factor for microbial biomass shifting from resource stoichiometry to soil acidity, N enrichment weakens the bottom-up control of soil microorganisms by plant-derived C sources. These results highlight the importance of integratively studying the plant-soil-microbe system in improving our understanding of ecosystem functioning under conditions of global N enrichment. |
| 关键词 | aboveground-belowground linkages compensatory effects microbial carbon limitation N saturation resource stoichiometry structural equation modeling |
| 学科领域 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
| DOI | 10.1111/gcb.12348 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | GLOBAL CHANGE ; MYCORRHIZAL FUNGI ; SOIL ; ACIDIFICATION ; BIODIVERSITY ; BIOMASS ; PH ; METAANALYSIS ; CONTINGENCY ; COMMUNITIES |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| WOS记录号 | WOS:000326836000012 |
| 出版者 | WILEY |
| 文献子类 | Article |
| 出版地 | HOBOKEN |
| EISSN | 1365-2486 |
| 资助机构 | National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Chinese Academy of Sciences(Chinese Academy of Sciences) |
| 作者邮箱 | Lu (ü), Xiao-Tao/B-3905-2008 ; Xia, Jianyang/A-7886-2008 ; Wang, Zhengwen/A-8292-2011 ; Cunzheng, Wei/A-4360-2009 ; Xia, Jianyang/S-9499-2019 ; Han, Xingguo/K-7552-2016 ; Yu, Qiang/E-2097-2011 ; Kardol, Paul/N-8383-2015 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/28023 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 4.Colorado State Univ, Grad Degree Program Ecol, Dept Biol, Ft Collins, CO 80523 USA 5.Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA 6.Swedish Univ Agr Sci, Dept Forest Ecol & Management, S-90183 Umea, Sweden |
| 推荐引用方式 GB/T 7714 | Wei, Cunzheng,Yu, Qiang,Bai, Edith,et al. Nitrogen deposition weakens plant-microbe interactions in grassland ecosystems[J]. GLOBAL CHANGE BIOLOGY,2013,19(12):3688-3697. |
| APA | Wei, Cunzheng.,Yu, Qiang.,Bai, Edith.,Lu, Xiaotao.,Li, Qi.,...&Han, Xingguo.(2013).Nitrogen deposition weakens plant-microbe interactions in grassland ecosystems.GLOBAL CHANGE BIOLOGY,19(12),3688-3697. |
| MLA | Wei, Cunzheng,et al."Nitrogen deposition weakens plant-microbe interactions in grassland ecosystems".GLOBAL CHANGE BIOLOGY 19.12(2013):3688-3697. |
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| 23925948.pdf（293KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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