IMHE OpenIR  > 山地表生过程与生态调控重点实验室
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
Corresponding AuthorWang, Genxu
2014
Source PublicationGEODERMA
ISSN0016-7061
EISSN1872-6259
Volume232Pages:414-425
SubtypeArticle
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
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.geoderma.2014.05.016
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordQINGHAI-TIBET PLATEAU ; INTERIOR ALASKA ; VEGETATION COVER ; CLIMATE-CHANGE ; ACTIVE LAYER ; TEMPERATURE ; MODEL ; MATTER ; CARBON ; VARIABILITY
Language英语
Quartile2区
TOP
WOS SubjectSoil Science
WOS IDWOS:000340315700040
Funding OrganizationNational Natural Science Foundation of China(40925002 ; National Basic Research Program of China(2013CBA01807) ; 41301024)
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9971
Collection山地表生过程与生态调控重点实验室
Affiliation1.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
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
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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