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The response patterns of community traits of N2O emission-related functional guilds to temperature across different arable soils under inorganic fertilization

文献类型： 外文期刊

作者： Yin, Chang 1 ; Fan, Fenliang 1 ; Song, Alin 1 ; Fan, Xiaoping 2 ; Ding, Hong 3 ; Ran, Wei 4 ; Qiu, Huizhen 5 ; Liang, Yon 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Plant Nutr & Fertilizer, Minist Agr, Beijing 100081, Peoples R China

2.Zhejiang Univ, Coll Environm & Resource Sci, Key Lab Environm Remediat & Ecol Hlth, Minist Educ, Hangzhou 310058, Zhejiang, Peoples R China

3.Fujian Acad Agr Sci, Inst Soil & Fertilizer, Fuzhou 350013, Peoples R China

4.Nanjing Agr Univ, Coll Resources & Environm, Nanjing 210095, Jiangsu, Peoples R China

5.Gansu Agr Univ, Coll Resources & Environm, Lanzhou 730070, Peoples R China

关键词： Community traits;Temperature;AOA;Heterotrophic nitrification

期刊名称：SOIL BIOLOGY & BIOCHEMISTRY （ 影响因子：7.609； 五年影响因子：8.312 ）

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收录情况： SCI

摘要： Temperature is an important factor governing the community traits of N2O-emission related functional guilds (mainly autotrophic ammonia oxidizers and heterotrophic denitrifiers) and their activities. However, there have been few attempts to explore the broad response patterns of these guilds to temperature changes across arable soils. For this, a temperature-controlled (15, 25 and 35 degrees C) microcosm experiment was conducted using three arable soils (Fujian, Gansu, and Jiangsu) in China under two different fertilizations (no fertilization control (CK) and inorganic fertilization (NPK)). In conjunction with the measurement of N2O emission, the community structure and abundance of ammonia oxidizing archaea (AOA) and bacteria (AOB), as well as nirS- and nirK-denitrifiers were assessed using T-RFLP and quantitative PCR, respectively. The analysis of community traits indicated a consistent response pattern of AOAs to temperature in terms of guild abundance, and a consistent effect of inorganic fertilization on the abundance of AOBs, but soil-dependent response patterns to fertilization and temperature were found for nirS- and nirK-denitrifiers in terms of abundance and community structure. The correlation analysis suggested that AOAs possibly assumed a role in N2O emission in all the tested soils, and nirS-denitrifiers probably participated in N2O emission in both the Fujian and Gansu soil, while a considerable amount of N2O emission in the Jiangsu soil might have been derived from heterotrophic nitrification. (C) 2017 Elsevier Ltd. All rights reserved.

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