IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Responses of microbial respiration to nitrogen addition in two alpine soils in the Qinghai-Tibetan Plateau
Gao YH(高永恒)1,2; Yongheng Gao3; Dongxue Wang4; Gang Ma3; Xiaoyang Zeng3; Shiquan Xu3
Corresponding AuthorYongheng Gao
2015
Source PublicationJOURNAL OF ENVIRONMENTAL BIOLOGY
ISSN0254-8704
Volume36Issue:1Pages:261-265
SubtypeArticle
Abstract

An incubation experiment was conducted to examine the effects of nitrogen (N) application on microbial respiration in alpine meadow and alpine shrub soils from eastern of Qinghai-Tibetan Plateau. Four different levels of nitrogen fertilization were selected in this study: control (CK, 0 mg N g(-1)), low (LN, 0.04 mg N g(-1)), medium (MN, 0.16 mg N g(-1)), high (HN, 0.4 mg N g(-1)). The results showed that microbial respiration was higher in alpine shrub than in alpine meadow soil, regardless of the rate of N application. Total microbial respiration over the course of incubation period decreased in both soils with HN and MN treatments relative to control, but no significant differences were observed in soils with LN treatments. There was significantly positive correlation between total microbial respiration and dissolved organic carbon concentration in both soils. The results indicated that DOC may be a useful indicator of microbial respiration rate in alpine soils and the increasing N inputs could drive a negative feedback to global warming effects of carbon dioxide emitted to the atmosphere in alpine soils.

KeywordAlpine Shrub Soil Carbon Cycle Fertilizatin Microbial Co2 Nitrogen Depostion
Indexed BySCI
Language英语
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WOS IDWOS:000348489300012
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9607
Collection山地表生过程与生态调控重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Environm Evolut & Regulat, Chengdu 610041, Peoples R China
2.Univ Quebec, Inst Environm Sci, Montreal, PQ H3C 3P8, Canada
3.Gansu Agr Univ, Coll Resources & Environm, Lanzhou 730070, Peoples R China
4.Sichuan Coll Architectural Technol, Dept Landscape Architecture, Deyang 618000, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Gao YH,Yongheng Gao,Dongxue Wang,et al. Responses of microbial respiration to nitrogen addition in two alpine soils in the Qinghai-Tibetan Plateau[J]. JOURNAL OF ENVIRONMENTAL BIOLOGY,2015,36(1):261-265.
APA Gao YH,Yongheng Gao,Dongxue Wang,Gang Ma,Xiaoyang Zeng,&Shiquan Xu.(2015).Responses of microbial respiration to nitrogen addition in two alpine soils in the Qinghai-Tibetan Plateau.JOURNAL OF ENVIRONMENTAL BIOLOGY,36(1),261-265.
MLA Gao YH,et al."Responses of microbial respiration to nitrogen addition in two alpine soils in the Qinghai-Tibetan Plateau".JOURNAL OF ENVIRONMENTAL BIOLOGY 36.1(2015):261-265.
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