兰州大学机构库 >草地农业科技学院
Different responses of soil C:N:P stoichiometry to stocking rate and nitrogen addition level in an alpine meadow on the Qinghai-Tibetan Plateau
Li, Lan; Liu, Yang; Xiao, Tianhao; Hou, FJ(侯扶江)
2021-09
Source PublicationAPPLIED SOIL ECOLOGY
ISSN0929-1393
Volume165
AbstractLivestock grazing and nitrogen (N) deposition influenced most grasslands in the world by affecting the element contents and their stoichiometry in soil. Although the individual effects of grazing or N deposition on soil nutrients are well understood, how their interaction effects on soil stoichiometric characteristics are unclear. To reveal the response of soil carbon:nitrogen:phosphorus (C:N:P) stoichiometry to grazing and N deposition, we conducted an experiment in an alpine meadow on the Qinghai-Tibetan Plateau (QTP), which included three stocking rates (0, 8 and 16 sheep ha(-1)) and four N addition levels (0, 50, 100 and 200 kg N ha(-1) yr(-1)). The results showed that grazing had no significant impact on soil C:N:P stoichiometry. Nitrogen addition significantly increased soil total N and N:P ratio at the stocking rate of 8 sheep ha(-1) in the surface soil. The interactive effects of grazing and N addition did not significantly affect soil C:N:P stoichiometry, however, the interplay between grazing and N addition caused vegetation changes, which had indirect effects on soil C:N:P stoichiometry. The differential responses of plants and soil indicated that soil was less sensitive to grazing and N addition than plants. Our findings indicated that N was still a major limit factor for plant growth in the alpine meadow of QTP, and hopefully, provided that stocking rate at 8 sheep ha(-1) and N addition at 50 kg N ha(-1) yr(-1) could be a suitable grassland management technique for soil fertility sequestration in the QTP.
KeywordCommunity composition Plant-soil feedbacks Grazing Soil stoichiometry Tibetan sheep
PublisherELSEVIER
DOI10.1016/j.apsoil.2021.103961
Indexed BySCOPUS ; SCIE
Language英语
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000657603200001
Original Document TypeArticle
Citation statistics
Document Type期刊论文
Identifierhttp://ir.lzu.edu.cn/handle/262010/452265
Collection草地农业科技学院
AffiliationLanzhou Univ, Key Lab Grassland Livestock Ind Innovat, State Key Lab Grassland Agroecosyst, Coll Pastoral Agr Sci & Technol,Minist Agr & Rura, Lanzhou 730020, Peoples R China
First Author AffilicationCollege of Pastoral Agriculture Science and Technology
Recommended Citation
GB/T 7714
Li, Lan,Liu, Yang,Xiao, Tianhao,et al. Different responses of soil C:N:P stoichiometry to stocking rate and nitrogen addition level in an alpine meadow on the Qinghai-Tibetan Plateau[J]. APPLIED SOIL ECOLOGY,2021,165.
APA Li, Lan,Liu, Yang,Xiao, Tianhao,&Hou, Fujiang.(2021).Different responses of soil C:N:P stoichiometry to stocking rate and nitrogen addition level in an alpine meadow on the Qinghai-Tibetan Plateau.APPLIED SOIL ECOLOGY,165.
MLA Li, Lan,et al."Different responses of soil C:N:P stoichiometry to stocking rate and nitrogen addition level in an alpine meadow on the Qinghai-Tibetan Plateau".APPLIED SOIL ECOLOGY 165(2021).
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