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Response of soil microbial communities and nitrogen thresholds of Bothriochloa ischaemum to short-term nitrogen addition on the Loess Plateau

文献类型：期刊论文

作者Zhang, Jiaoyang2,3; Ai, Zemin2,3; Liang, Chutao2,3; Wang, Guoliang1,2; Xue, Sha1,2; Xue, S (reprint author), Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
刊名GEODERMA
出版日期2017
卷号308期号:308页码:112-119
关键词Nitrogen Addition Microbial Community The Loess Plateau Thresholds
ISSN号0016-7061
DOI10.1016/j.geoderma.2017.08.034
文献子类Article
英文摘要China is becoming the world's third largest area of nitrogen (N) deposition, which is attracting increasing attention. Understanding how N affects soil microbial communities and determining the thresholds for the effect of N on microorganisms and ecosystems are critical. We investigated the changes to the characteristics of microbial communities after two years of adding N to soil with the perennial grass Bothriochloa ischaemwn, simulating N deposition on the Loess Plateau, at four rates of N addition (0 (CK), 2.5 (N1), 5.0 (N2), and 10.0 (N3) g N m(-2)y(-1)) and a control BL (bare land without vegetation or N addition). Soil microbial biomass carbon (C) and N contents and microbial activity increased in N1. The lowest rate of N addition (Ni) increased soil total, bacterial, fungal, and actinomycetic phospholipid fatty acid (PLFA) contents, but excessive N addition decreased bacterial and actinomycetic PLFA contents. N addition did not alter microbial-community structure. The effect of N addition on soil microbial properties was influenced by soil C content (SOC and DOC), increased the diversity and evenness of the microbial community and decreased the diversity of the bacterial community. Soil microbial biomass and activity increased in N1, ivhich was beneficial to the stability of the soil ecosystem on the plateau and defined the threshold of N addition for microorganisms and the ecosystem. More attention should thus be paid to depositional level represented by N2 (5 g N m(-2) y(-1)), which might limit microbial communities. The microbial community was inhibited, the diversity decreased, and the ecological system was affected by the level represented over N2.
学科主题Agriculture
URL标识查看原文
出版地AMSTERDAM
会议日期无
语种英语
WOS记录号WOS:000413282100013
出版者ELSEVIER SCIENCE BV
资助机构Natural Science Foundation of China [41371510, 41771557, 41471438, 41671513]; West Young Scholars Project of The Chinese Academy of Sciences [XAB2015A05] ; Natural Science Foundation of China [41371510, 41771557, 41471438, 41671513]; West Young Scholars Project of The Chinese Academy of Sciences [XAB2015A05] ; Natural Science Foundation of China [41371510, 41771557, 41471438, 41671513]; West Young Scholars Project of The Chinese Academy of Sciences [XAB2015A05] ; Natural Science Foundation of China [41371510, 41771557, 41471438, 41671513]; West Young Scholars Project of The Chinese Academy of Sciences [XAB2015A05]
源URL[http://ir.iswc.ac.cn/handle/361005/7875]  
专题水保所科研产出--SCI_2017--SCI
通讯作者Xue, S (reprint author), Inst Soil & Water Conservat, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China.
作者单位1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, PR China
2.Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, PR China
3.University of Chinese Academy of Sciences, Beijing 100049, PR China
推荐引用方式
GB/T 7714		 Zhang, Jiaoyang,Ai, Zemin,Liang, Chutao,et al. Response of soil microbial communities and nitrogen thresholds of Bothriochloa ischaemum to short-term nitrogen addition on the Loess Plateau[J]. GEODERMA,2017,308(308):112-119.
APA Zhang, Jiaoyang,Ai, Zemin,Liang, Chutao,Wang, Guoliang,Xue, Sha,&Xue, S .(2017).Response of soil microbial communities and nitrogen thresholds of Bothriochloa ischaemum to short-term nitrogen addition on the Loess Plateau.GEODERMA,308(308),112-119.
MLA Zhang, Jiaoyang,et al."Response of soil microbial communities and nitrogen thresholds of Bothriochloa ischaemum to short-term nitrogen addition on the Loess Plateau".GEODERMA 308.308(2017):112-119.

入库方式： OAI收割

来源：水土保持研究所

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