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Alternative TitleThe Effects of Freezing-Thawing on Soil Carbon,Nitrogen and Phosphorus Availabilities in Alpine Meadow on the Qinghai-Tibetan Plateau
谢青琰1,2; 高永恒2
Corresponding Author高永恒
Source Publication水土保持学报
Other AbstractAn indoor experiment was conducted to test the effects of freeze-thaw frequency and freezing temperature on soil carbon, nitrogen and phosphorus availability under different soil moisture in alpine meadow on the Qinghai-Tibetan Plateau. The results showed that (1) the soil DTN, NO3--N and PO43--P content decreased with increasing freeze-thaw cycles, but the content of NH4+-N and DTP increased; (2) with the same freeze-thaw frequency, the contents of DOC, DTN and NH4+-N in the soil with high soil moisture under -15℃/5℃ freeze-thaw cycle treatment were significantly higher than those under -5℃/5℃ treatment; (3) after freeze-thaw cycles, the contents of DOC、DTN、NH4+-N、DTP and PO43--P in the soil with high moisture, were higher than those in the soil with low moisture, but the NO3--N was opposite. As a result, freeze-thaw frequency, freezing temperature and soil moisture are all the key factors for the effects of freeze-thaw action on alpine meadow soil, meanwhile, when estimating the effects of freeze-thaw action on soil carbon, nitrogen and phosphorus availabilities in alpine meadow, we should give sufficient consideration to the influence of the interaction between these factors.
Keyword冻融交替 土壤碳氮磷 土壤含水量 高寒草甸土 青藏高原
Subject AreaS812.2
Indexed ByCSCD ; 北大中文核心
Funding Organization国家重点基础研究计划项目(2012CB417101) ; 国家自然科学基金项目(41271276) ; 成都山地灾害与环境研究所“一三五”方向性课题项目(SDS-135-1203-03)
Citation statistics
Cited Times:9[CSCD]   [CSCD Record]
Document Type期刊论文
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
谢青琰,高永恒. 冻融对青藏高原高寒草甸土壤碳氮磷有效性的影响[J]. 水土保持学报,2015,29(1):137-142.
APA 谢青琰,&高永恒.(2015).冻融对青藏高原高寒草甸土壤碳氮磷有效性的影响.水土保持学报,29(1),137-142.
MLA 谢青琰,et al."冻融对青藏高原高寒草甸土壤碳氮磷有效性的影响".水土保持学报 29.1(2015):137-142.
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