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Responses of ammonia-oxidizing archaea and bacteria to nitrogen and phosphorus amendments in an alpine steppe
Dong, JF (Dong, Junfu)1; Che, RX (Che, Rongxiao)2; Jia, SG (Jia, Shugang)3; Wang, F (Wang, Fang)4; Zhang, B (Zhang, Biao)1; Cui, XY (Cui, Xiaoyong)1; Wang, SP (Wang, Shiping)5; Wang, SP (Wang, Shuping)4
Source PublicationEUROPEAN JOURNAL OF SOIL SCIENCE
2019
Volume0Issue:0Pages:0
DOI10.1111/ejss.12911
Abstract

With the increasing demands of livestock production, grasslands are under pressure from over-intensified grazing. Phosphorus (P) and nitrogen (N) fertilization is widely employed to meet the nutrient demands of heavy grazing. Although soil ammonia-oxidizers play a critical role in determining N dynamics after fertilizer application, their responses to fertilization are still not well understood in steppe grassland systems. Here, the individual and combined effects of N (0, 7.5 and 15 g N m(-2) year(-1)) and P (0, 3.27, 6.55 and 13.09 g P m(-2) year(-1)) applications on soil ammonia-oxidizers were explored in the Tibetan alpine steppe. Ammonia-oxidizing archaea (AOA) and bacteria (AOB) abundance and community composition were examined using qPCR, terminal restriction fragment length polymorphism and clone libraries. Results showed that AOB diversity was significantly increased by N fertilization and decreased by P fertilization. The abundance of AOB was significantly increased by N fertilization and its interactive effects with P application. In contrast, AOA community diversity and abundance remained unaffected by either N or P application. The AOB abundance and diversity were affected by the direct effects of N fertilization, as well as its indirect effects of N application through available N and ammonium (NH4+), and further analysis showed that NH4+ and pH were the main factors. The changes to the ammonia-oxidizing community altered the total N content of plants and the N:P ratio of Gramineae. Plant P properties were influenced by P addition, which also interacted with soil pH and available N to indirectly affect AOB. Overall, AOB exhibited stronger responses to N and P fertilization of alpine steppe grassland than AOA, and appear to play a critical role in plant nutrient absorption under fertilization management. Highlights

Subject AreaSoil Science
WOS IDWOS:000504378100001
Language英语
Indexed BySCI
KeywordCommunity Structure Soil-nitrogen Carbon Sequestration Temperate Steppe Organic Nitrogen Tibetan Plateau Grassland Soil Abundance Nitrification Fertilization
WOS Research AreaAgriculture
WOS SubjectSoil Science
Cooperation Status国内
ISSN1351-0754
Department高寒生态重点实验室
URL查看原文
PublisherWILEY
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9041
Collection中国科学院青藏高原研究所
Corresponding AuthorWang, SP (Wang, Shiping)
Affiliation1.Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China;
2.Yunnan Univ, Inst Int Rivers & Ecosecur, Kunming, Yunnan, Peoples R China;
3.Guangxi Teachers Educ Univ, Minist Educ, Key Lab Environm Change & Resources Use Beibu Gul, Nanning, Peoples R China;
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 101408, Peoples R China;
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Dong, JF ,Che, RX ,Jia, SG ,et al. Responses of ammonia-oxidizing archaea and bacteria to nitrogen and phosphorus amendments in an alpine steppe[J]. EUROPEAN JOURNAL OF SOIL SCIENCE,2019,0(0):0.
APA Dong, JF .,Che, RX .,Jia, SG .,Wang, F .,Zhang, B .,...&Wang, SP .(2019).Responses of ammonia-oxidizing archaea and bacteria to nitrogen and phosphorus amendments in an alpine steppe.EUROPEAN JOURNAL OF SOIL SCIENCE,0(0),0.
MLA Dong, JF ,et al."Responses of ammonia-oxidizing archaea and bacteria to nitrogen and phosphorus amendments in an alpine steppe".EUROPEAN JOURNAL OF SOIL SCIENCE 0.0(2019):0.
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