Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau
The 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 biochemic...
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ftxiamenuniv:oai:dspace.xmu.edu.cn:2288/60085 2023-05-15T17:56:42+02:00 Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau Hu, H. C. Wang, G. X. Liu, G. S. Li, T. B. Ren, D. X. Wang, Y. B. Cheng, H. Y. Wang, J. F. 刘广山 2009 http://dspace.xmu.edu.cn/handle/2288/60085 en_US eng Environmental Geology,57(6):1391-1397 0943-0105 ISI:000265622900014 http://dspace.xmu.edu.cn/handle/2288/60085 Alpine ecosystem degradation Soil temperature Vegetation coverage Seasonal frozen soil Permafrost Article 2009 ftxiamenuniv 2020-07-21T11:31:55Z The 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. Article in Journal/Newspaper permafrost Xiamen University Institutional Repository |
institution |
Open Polar |
collection |
Xiamen University Institutional Repository |
op_collection_id |
ftxiamenuniv |
language |
English |
topic |
Alpine ecosystem degradation Soil temperature Vegetation coverage Seasonal frozen soil Permafrost |
spellingShingle |
Alpine ecosystem degradation Soil temperature Vegetation coverage Seasonal frozen soil Permafrost Hu, H. C. Wang, G. X. Liu, G. S. Li, T. B. Ren, D. X. Wang, Y. B. Cheng, H. Y. Wang, J. F. 刘广山 Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau |
topic_facet |
Alpine ecosystem degradation Soil temperature Vegetation coverage Seasonal frozen soil Permafrost |
description |
The 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. |
format |
Article in Journal/Newspaper |
author |
Hu, H. C. Wang, G. X. Liu, G. S. Li, T. B. Ren, D. X. Wang, Y. B. Cheng, H. Y. Wang, J. F. 刘广山 |
author_facet |
Hu, H. C. Wang, G. X. Liu, G. S. Li, T. B. Ren, D. X. Wang, Y. B. Cheng, H. Y. Wang, J. F. 刘广山 |
author_sort |
Hu, H. C. |
title |
Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau |
title_short |
Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau |
title_full |
Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau |
title_fullStr |
Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau |
title_full_unstemmed |
Influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on Qinghai-Tibet Plateau |
title_sort |
influences of alpine ecosystem degradation on soil temperature in the freezing-thawing process on qinghai-tibet plateau |
publishDate |
2009 |
url |
http://dspace.xmu.edu.cn/handle/2288/60085 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Environmental Geology,57(6):1391-1397 0943-0105 ISI:000265622900014 http://dspace.xmu.edu.cn/handle/2288/60085 |
_version_ |
1766164950767632384 |