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Responses of soil microbial community to nitrogen fertilizer and precipitation regimes in a semi-arid steppe

文献类型：期刊论文

作者Sun, Yi-Fei; Shen, Ju-Pei; Zhang, Cui-Jing; Zhang, Li-Mei; Bai, Wen-Ming; Fang, Ying3; He, Ji-Zheng
刊名JOURNAL OF SOILS AND SEDIMENTS
出版日期2018
卷号18期号:3页码:762-774
关键词Ammoniaoxidizers Denitrifiers N fertilization Precipitation regimes Semi-arid steppe
ISSN号1439-0108
DOI10.1007/s11368-017-1846-6
文献子类Article
英文摘要Changes of nitrogen (N) cycle caused by N fertilization and precipitation regimes have affected the key ecosystem structure and functions in temperate steppe, which may modify the structure of soil microbial communities involved in N transformation. This paper was designated to examine the response of soil ammonia oxidizers and denitrifiers to the N fertilization and precipitation regimes in a semi-arid steppe where N and water contents are major limiting factors of the grassland productivity. This study was based on a long-term N fertilization and precipitation regimes experiment in Inner Mongolia (116A degrees 17' 20aEuro(3) E, 42A degrees 2' 29aEuro(3) N). The treatments including CK (control), R (reduced precipitation), W (30% increase in precipitation), N (10 g N m(-2) y(-1)), RN (reduced precipitation and 10 g N m(-2) y(-1)), and WN (30% increase in precipitation and 10 g N m(-2) y(-1)). Soil basic chemical properties and microbial activities were analyzed. Molecular methods were applied to determine the abundance, structure and diversity of ammonia oxidizers and denitrifiers. Statistical analysis detected the main and interactive effect of treatments on soil microbial communities and revealed the relationship between soil microbial community structures and environmental factors. N fertilization significantly increased ammonia-oxidizing bacteria (AOB) abundance. Ammonia-oxidizing archaea (AOA) community structure was markedly changed in N fertilizer treatment and strongly affected by soil pH, while soil nitrate and water content correlated with AOB community structure. Soil nitrate was the key factor influencing nirK gene community structure, while soil pH and water content explained much of the variations of nosZ gene community. AOB-amoA and nosZ gene community diversities were influenced by precipitation regimes and interaction of N fertilization and precipitation regimes, respectively. N fertilization and precipitation regimes had significant influences on the changes of soil properties and microbial functional communities. Soil nitrification was mainly driven by AOB in the semi-arid grassland. Changes of substrate content and soil pH were the key factors in shifting functional microbial communities. The non-synergistic effects of N fertilization and precipitation regimes on the microbial functional groups indicated that the negative effect of lower pH induced by N fertilization would be alleviated by precipitation regimes, which should be well considered in grassland restoration.
学科主题Environmental Sciences ; Soil Science
出版地HEIDELBERG
电子版国际标准刊号1614-7480
WOS关键词AMMONIA-OXIDIZING ARCHAEA ; DENITRIFYING COMMUNITIES ; ALTERED PRECIPITATION ; CONTRASTING RESPONSE ; TEMPERATE STEPPE ; USE EFFICIENCY ; N2O EMISSIONS ; RED SOIL ; LAND-USE ; BACTERIA
语种英语
WOS记录号WOS:000426070100011
出版者SPRINGER HEIDELBERG
资助机构National Basic Research Program of ChinaNational Basic Research Program of China [2013CB956300] ; Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41371265]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/20451]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.[Bai, Wen-Ming
4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
5.Shen, Ju-Pei
6.[Sun, Yi-Fei
7.Univ Melbourne, Fac Vet & Agr Sci, Parkville, Vic 3010, Australia
8.Zhang, Cui-Jing
9.Zhang, Li-Mei
推荐引用方式
GB/T 7714		 Sun, Yi-Fei,Shen, Ju-Pei,Zhang, Cui-Jing,et al. Responses of soil microbial community to nitrogen fertilizer and precipitation regimes in a semi-arid steppe[J]. JOURNAL OF SOILS AND SEDIMENTS,2018,18(3):762-774.
APA Sun, Yi-Fei.,Shen, Ju-Pei.,Zhang, Cui-Jing.,Zhang, Li-Mei.,Bai, Wen-Ming.,...&He, Ji-Zheng.(2018).Responses of soil microbial community to nitrogen fertilizer and precipitation regimes in a semi-arid steppe.JOURNAL OF SOILS AND SEDIMENTS,18(3),762-774.
MLA Sun, Yi-Fei,et al."Responses of soil microbial community to nitrogen fertilizer and precipitation regimes in a semi-arid steppe".JOURNAL OF SOILS AND SEDIMENTS 18.3(2018):762-774.

入库方式： OAI收割

来源：植物研究所

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