IMHE OpenIR  > 山地表生过程与生态调控重点实验室
冻融对青藏高原高寒草甸土壤碳氮磷有效性的影响
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
2015-02
Source Publication水土保持学报
ISSN0022-4561
Volume29Issue:1Pages:137-142
Abstract以青藏高原高寒草甸土壤为研究对象,通过室内模拟冻融循环过程,研究了不同土壤含水量条件下冻融频次和冻结温度对土壤碳氮磷有效性的影响。结果表明,(1)土壤可溶性氮(DTN)、硝态氮(NO3--N)和有效磷(PO43--P)含量随冻融频次增加呈下降趋势,但铵态氮(NH4+-N)和可溶性磷(DTP)含量呈现上升趋势;(2)在冻融频次相同情况下,高含水量土壤在-15℃/5℃冻融循环处理下的可溶性有机碳(DOC)、DTN和NH4+-N含量显著高于-5℃/5℃冻融循环处理下的含量;(3)含水量高的土壤在冻融处理后,DOC、DTN、NH4+-N、DTP和有效磷(PO43--P)的含量通常高于含水量低的土壤,但NO3--N则相反。由此可见,冻融频次、冻结温度和土壤含水量都是影响高寒草甸土壤冻融效应的关键因子,在评价冻融作用对高寒草甸土壤碳氮磷有效性影响时,还应充分考虑这些因子间交互效应。
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
DOI10.13870/j.cnki.stbcxb.2015.01.028
Indexed ByCSCD ; 北大中文核心
Language中文
CSCD IDCSCD:5359474
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:8[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17206
Collection山地表生过程与生态调控重点实验室
Affiliation1.中国科学院大学资源与环境科学学院
2.中国科学院水利部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
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.
Files in This Item:
File Name/Size DocType Version Access License
冻融对青藏高原高寒草甸土壤碳氮磷有效性的(249KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[谢青琰]'s Articles
[高永恒]'s Articles
Baidu academic
Similar articles in Baidu academic
[谢青琰]'s Articles
[高永恒]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[谢青琰]'s Articles
[高永恒]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 冻融对青藏高原高寒草甸土壤碳氮磷有效性的影响_谢青琰.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.