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Effects of N addition and clipping on above and belowground plant biomass, soil microbial community structure, and function in an alpine meadow on the Qinghai-Tibetan Plateau

文献类型：期刊论文

作者Liu, Weilong4; Jiang, Yonglei3; Wang, Genxu2; Su, Yan4; Smoak, Joseph M.1; Liu, Meiyu4; Duan, Baoli4
刊名EUROPEAN JOURNAL OF SOIL BIOLOGY
出版日期2021-09-01
卷号106页码:10
关键词Alpine meadow Fertilization Microbial biomass Grazing Soil properties
ISSN号1164-5563
DOI10.1016/j.ejsobi.2021.103344
英文摘要Nitrogen (N) enrichment and grazing are two factors that have profound effects on grassland ecosystem processes and functions. This study evaluated separate and combined effects of clipping and N addition on soil properties, soil microbial community structure, and soil extracellular enzyme activity within our experiment design which included three clipping intensities (i.e., unclipped, moderate, and heavy clipping) and two different N treatments (with and without N addition) in an alpine meadow ecosystem on the Qinghai-Tibetan Plateau, China. Results revealed that N addition alone did not significantly affect total soil organic carbon (TOC), total soil N (TN), dissolved organic carbon (DOC), microbial biomass carbon (MBC), and N (MBN) after 3 years of treatments. The moderate clipping alone increased root exudation rates whereas the heavy clipping decreased root exudation rates, TOC, TN, DOC, MBC and MBN, fungi biomass, and the ratio of fungi to bacteria. The effects of N addition were generally neutral or negative in the heavy clipping treatment. In contrast, N addition significantly increased aboveground biomass, MBC, MBN, DOC, and soil water content but decreased inorganic N in the moderate clipping. RDA analysis showed that N addition could stimulate soil microbial community structure in the moderate clipping treatment by impacting the availability of labile soil C. Our results improve the understanding of the role of N addition in regulating soil C storage among different grazing intensities in alpine meadows.
WOS关键词GRAZING INTENSITY ; NITROGEN AVAILABILITY ; EXTRACTION METHOD ; CARBON STOCKS ; GRASSLAND ; DEGRADATION ; RESPONSES ; MANAGEMENT ; PATTERNS ; FOREST
资助项目NSFC-RCN - National Natural Science Foundation of China[41861134039] ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS[SDS-135-1707]
WOS研究方向Environmental Sciences & Ecology ; Agriculture
语种英语
WOS记录号WOS:000695236600008
出版者ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
资助机构NSFC-RCN - National Natural Science Foundation of China ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS
源URL[http://ir.imde.ac.cn/handle/131551/56223]  
专题成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
综合测试与模拟中心
通讯作者Wang, Genxu; Duan, Baoli
作者单位1.Univ S Florida, Sch Geosci, St Petersburg, FL 33701 USA
2.Sichuan Univ, Coll Water Resource & Hydropower, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China
3.Yunnan Acad Tobacco Agr Sci, Kunming 650021, Yunnan, Peoples R China
4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Weilong,Jiang, Yonglei,Wang, Genxu,et al. Effects of N addition and clipping on above and belowground plant biomass, soil microbial community structure, and function in an alpine meadow on the Qinghai-Tibetan Plateau[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2021,106:10.
APA Liu, Weilong.,Jiang, Yonglei.,Wang, Genxu.,Su, Yan.,Smoak, Joseph M..,...&Duan, Baoli.(2021).Effects of N addition and clipping on above and belowground plant biomass, soil microbial community structure, and function in an alpine meadow on the Qinghai-Tibetan Plateau.EUROPEAN JOURNAL OF SOIL BIOLOGY,106,10.
MLA Liu, Weilong,et al."Effects of N addition and clipping on above and belowground plant biomass, soil microbial community structure, and function in an alpine meadow on the Qinghai-Tibetan Plateau".EUROPEAN JOURNAL OF SOIL BIOLOGY 106(2021):10.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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