兰州大学机构库 >资源环境学院
Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations
Wang, Genxu1; Mao, Tianxu1; Chang, Juan2; Du, Jizeng1
2014-11
Source PublicationGEODERMA   Impact Factor & Quartile Of Published Year  The Latest Impact Factor & Quartile
ISSN0016-7061
Volume232Pages:414-425
AbstractThe relationship between soil organic matter and soil temperature plays an important role in our understanding of the effect of climate change on the hydrological and carbon cycles in permafrost regions. Several studies have documented that the organic horizon thickness has profound buffering effects on soil temperature for both tundra and boreal forest ecosystems. In the present study, the alpine meadow ecosystem in the middle and low-latitude permafrost region of the Qinghai-Tibet Plateau (QTP) was selected to examine the impacts of surface soil organic matter on the thermal properties of deep soil. Based on the data obtained from more than 23 observation sites, the relationship between soil organic content and soil temperature dynamics in different seasons was determined. The findings indicate a strong positive exponential (in thawing period) and linear (in freezing period) relationship between surface soil organic content (SOC) and soil temperature dynamics in deep soil layers. The higher SOC at the surface soil layer is associated with a lower rate of soil temperature variation and a later onset time for the thaw-freeze transformation. In permafrost regions of the QTP, the greater lapse rate of soil temperature per 100 m of increased elevation resulted in more significant modification of the SOC and soil thermal relationship in alpine meadows than that in tundra and boreal ecosystems. The coupled soil organic matter, soil thermal and water relationships play an important role in the resilience of permafrost during climate changes. (C) 2014 Elsevier B.V. All rights reserved.
KeywordSoil Organic Content Soil Temperature Dynamics Impact Alpine Meadow Permafrost
Subject AreaAgriculture
PublisherELSEVIER
DOI10.1016/j.geoderma.2014.05.016
Publication PlaceAMSTERDAM
Indexed BySCIE ; EI
Language英语
First Inst
Funding Project国家自然科学基金项目 ; 国家重点基础研究发展计划以及国家重大科学研究计划(973计划)
Project NumberNational Natural Science Foundation of China [40925002, 41301024] ; National Basic Research Program of China [2013CBA01807]
WOS IDWOS:000340315700040
Funding OrganizationNSFC ; MOST
SubtypeArticle
EI ID20151700777366
IRID20151700777366
Department[Wang, Genxu;
Mao, Tianxu;
Du, Jizeng] Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China;
[Chang, Juan] Lanzhou Univ, Nat & Environm Coll, Lanzhou 730000, Peoples R China
Citation statistics
Document Type期刊论文
Identifierhttps://ir.lzu.edu.cn/handle/262010/120480
Collection资源环境学院
Corresponding AuthorWang, Genxu
Affiliation
1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
2.Lanzhou Univ, Nat & Environm Coll, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Wang, Genxu,Mao, Tianxu,Chang, Juan,et al. Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations[J]. GEODERMA,2014,232:414-425.
APA Wang, Genxu,Mao, Tianxu,Chang, Juan,&Du, Jizeng.(2014).Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations.GEODERMA,232,414-425.
MLA Wang, Genxu,et al."Impacts of surface soil organic content on the soil thermal dynamics of alpine meadows in permafrost regions: data from field observations".GEODERMA 232(2014):414-425.
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