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Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau
Hu, Hongchang1; Wang, Genxu1,2; Liu, Guangsheng1; Li, Taibing1; Ren, Dongxing1; Wang, Yibo1; Cheng, Huiyan1; Wang, Junfeng1
Corresponding AuthorWang, Genxu
2009
Source PublicationENVIRONMENTAL GEOLOGY
ISSN0943-0105
Volume57Issue:6Pages:1391-1397
SubtypeArticle
AbstractThe alpine ecosystem is very sensitive to environmental change due to global and local disturbances. The alpine ecosystem degradation, characterized by reducing vegetation coverage or biomass, has been occurring in the Qinghai-Tibet Plateau, which alters local energy balance, and water and biochemical cycles. However, detailed characterization of the ecosystem degradation effect is lack in literature. In this study, the impact of alpine ecosystem degradation on soil temperature for seasonal frozen soil and permafrost are examined. The vegetation coverage is used to indicate the degree of ecosystems degradation. Daily soil temperature is monitored at different depths for different vegetation coverage, for both permafrost and seasonal frozen soils. Results show that under the insulating effort of the vegetation, the freezing and thawing process become quicker and steeper, and the start of the freezing and thawing process moves up due to the insulating effort of the vegetation. The influence of vegetation coverage on the freezing process is more evident than the thawing process; with the decrease of vegetation coverage, the integral of frozen depth increases for seasonal frozen soil, but is vice versa for permafrost.
KeywordAlpine Ecosystem Degradation Soil Temperature Vegetation Coverage Seasonal Frozen Soil Permafrost
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s00254-008-1417-7
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Geology ; Water Resources
Indexed BySCI
WOS KeywordCLIMATIC-CHANGE ; ACTIVE LAYER ; PERMAFROST ; CHINA ; ALASKA
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000265622900014
Funding OrganizationThe National Basic Research Program(2007CB411504) ; Chinese Academy of Science ; Natural Science foundation of China(40730634 ; 90511003)
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10565
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.Lanzhou Univ, Coll Resources & Environm, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Hu, Hongchang,Wang, Genxu,Liu, Guangsheng,et al. Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau[J]. ENVIRONMENTAL GEOLOGY,2009,57(6):1391-1397.
APA Hu, Hongchang.,Wang, Genxu.,Liu, Guangsheng.,Li, Taibing.,Ren, Dongxing.,...&Wang, Junfeng.(2009).Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau.ENVIRONMENTAL GEOLOGY,57(6),1391-1397.
MLA Hu, Hongchang,et al."Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau".ENVIRONMENTAL GEOLOGY 57.6(2009):1391-1397.
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