Impact of inorganic nitrogen additions on microbes in biological soil crusts
文献类型：期刊论文
| 作者 | Wang, Jin1; Bao, Jingting1,2,3; Su, Jieqiong1; Li, Xinrong1; Chen, Guoxiong1; Ma, Xiaofei1 |
| 刊名 | SOIL BIOLOGY & BIOCHEMISTRY
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 88页码:303-313 |
| 关键词 | Biological soil crusts Nitrogen addition Bacteria Fungi Pyrosequencing |
| ISSN号 | 0038-0717 |
| DOI | 10.1016/j.soilbio.2015.06.004 |
| 通讯作者 | Wang, Jin(wangjinlzb@hotmail.com) |
| 英文摘要 | Many studies have shown that changes in nitrogen (N) availability affect the diversity and composition of soil microbial community in a variety of terrestrial systems, but less is known about the responses of microbes specific to biological soil crusts (BSCs) to increasing N additions. After seven years of field experiment, the bacterial diversity in lichen-dominated crusts decreased linearly with increasing inorganic N additions (ambient N deposition; low N addition, 3.5 g N m(-2) y(-1); medium N addition, 7.0 g N m(-2) y(-1); high N addition, 14.0 g N m(-2) y(-1)), whereas the fungal diversity exhibited a distinctive pattern, with the low N-added crust containing a higher diversity than the other crusts. Pyrosequencing data revealed that the bacterial community shifted to more Cyanobacteria with modest N additions (low N and medium N) and to more Actinobacteria and Proteobacteria and much less Cyanobacteria with excess N addition (high N). Our results suggest that soil pH, together with soil organic carbon (C), structures the bacterial communities with N additions. Among the fungal communities, the relative abundance of Ascomycota increased with modest N but decreased with excess N. However, increasing N additions favored Basidiomycota, which may be ascribed to increases in substrate availability with low lignin and high cellulose contents under elevated N conditions. Bacteria/fungi ratios were higher in the N-added samples than in the control, suggesting that the bacterial biomass tends to dominate over that of fungi in lichen-dominated crusts after N additions, which is especially evident in the excess N condition. Because bacteria and fungi are important components and important decomposers in BSCs, the alterations of the bacterial and fungal communities may have implications in the formation and persistence of BSCs and the cycling and storage of C in desert ecosystems. (C) 2015 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | SULTANATE-OF-OMAN ; FUNGAL COMMUNITIES ; COLORADO PLATEAU ; BACTERIAL COMMUNITIES ; DEPOSITION ALTERS ; FOREST FLOOR ; TUNDRA SOIL ; DIVERSITY ; DESERT ; ECOSYSTEM |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000359880600035 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557045 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wang, Jin |
| 作者单位 | 1.Chinese Acad Sci, Lab Plant Stress Ecophysiol & Biotechnol, Shapotou Desert Expt & Res Stn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Lanzhou Univ Technol, Sch Life Sci & Engn, Lanzhou 730050, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jin,Bao, Jingting,Su, Jieqiong,et al. Impact of inorganic nitrogen additions on microbes in biological soil crusts[J]. SOIL BIOLOGY & BIOCHEMISTRY,2015,88:303-313. |
| APA | Wang, Jin,Bao, Jingting,Su, Jieqiong,Li, Xinrong,Chen, Guoxiong,&Ma, Xiaofei.(2015).Impact of inorganic nitrogen additions on microbes in biological soil crusts.SOIL BIOLOGY & BIOCHEMISTRY,88,303-313. |
| MLA | Wang, Jin,et al."Impact of inorganic nitrogen additions on microbes in biological soil crusts".SOIL BIOLOGY & BIOCHEMISTRY 88(2015):303-313. |
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来源：寒区旱区环境与工程研究所
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