Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau
The suprapermafrost groundwater in permafrost region not only is an important component of the water cycle and land surface process, but also is closely associated with the charges of ecological environment in cold region. However, the seasonal dynamics, driving factors, and mechanism of suprapermaf...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/9600 2023-05-15T17:57:15+02:00 Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau Chang Juan Wang GenXu Li ChunJie Mao TianXu 2015-05-01 http://ir.imde.ac.cn/handle/131551/9600 https://doi.org/10.1007/s11430-014-5009-y 英语 eng SCIENCE CHINA-EARTH SCIENCES Chang Juan,Wang GenXu,Li ChunJie,et al. Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau[J]. SCIENCE CHINA-EARTH SCIENCES,2015,58(5):727-738. http://ir.imde.ac.cn/handle/131551/9600 doi:10.1007/s11430-014-5009-y Suprapermafrost Groundwater Seasonal Dynamics Soil Hydrothermal Characteristics Freezing-thawing Process Science & Technology Physical Sciences Geology VEGETATION RUNOFF LAYER Geosciences Multidisciplinary Article 期刊论文 2015 ftchinacadscimhe https://doi.org/10.1007/s11430-014-5009-y 2022-12-19T18:19:07Z The suprapermafrost groundwater in permafrost region not only is an important component of the water cycle and land surface process, but also is closely associated with the charges of ecological environment in cold region. However, the seasonal dynamics, driving factors, and mechanism of suprapermafrost groundwater are not well understood. Based on observation at slope scale on suprapermafrost groundwater dynamics of typical alpine meadows in the Qinghai-Tibet Plateau, the seasonal dynamics, spatial distribution and driving factors of suprapermafrost groundwater were analyzed. The results showed that there were close relationships between the seasonal dynamics of suprapermafrost groundwater and the freezing-thawing processes of active soil in permafrost region. The seasonal dynamics of suprapermafrost groundwater and its slope distribution pattern were controlled by soil temperature of active layers. The phase and range of the suprapermafrost groundwater dynamics are determined by deep soil (below 60 cm depth) moisture and groundwater recharging sources. The relationship between active soil temperatures and dynamics of suprapermafrost groundwater levels was better described by Boltzmann functions. However, the influencing thresholds of soil temperature on groundwater dynamics varied at different depths of active layers and in different slope positions, which resulted in the significant spatial heterogeneity of suprapermafrost groundwater dynamics in slope scale. Land cover change and global warming certainly altered the dynamics of suprapermafrost groundwater and the hydraulic interaction between groundwater and rivers, and consequently altered the overall hydrologic cycle of watershed scale. Article in Journal/Newspaper permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Science China Earth Sciences 58 5 727 738 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Suprapermafrost Groundwater Seasonal Dynamics Soil Hydrothermal Characteristics Freezing-thawing Process Science & Technology Physical Sciences Geology VEGETATION RUNOFF LAYER Geosciences Multidisciplinary |
spellingShingle |
Suprapermafrost Groundwater Seasonal Dynamics Soil Hydrothermal Characteristics Freezing-thawing Process Science & Technology Physical Sciences Geology VEGETATION RUNOFF LAYER Geosciences Multidisciplinary Chang Juan Wang GenXu Li ChunJie Mao TianXu Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau |
topic_facet |
Suprapermafrost Groundwater Seasonal Dynamics Soil Hydrothermal Characteristics Freezing-thawing Process Science & Technology Physical Sciences Geology VEGETATION RUNOFF LAYER Geosciences Multidisciplinary |
description |
The suprapermafrost groundwater in permafrost region not only is an important component of the water cycle and land surface process, but also is closely associated with the charges of ecological environment in cold region. However, the seasonal dynamics, driving factors, and mechanism of suprapermafrost groundwater are not well understood. Based on observation at slope scale on suprapermafrost groundwater dynamics of typical alpine meadows in the Qinghai-Tibet Plateau, the seasonal dynamics, spatial distribution and driving factors of suprapermafrost groundwater were analyzed. The results showed that there were close relationships between the seasonal dynamics of suprapermafrost groundwater and the freezing-thawing processes of active soil in permafrost region. The seasonal dynamics of suprapermafrost groundwater and its slope distribution pattern were controlled by soil temperature of active layers. The phase and range of the suprapermafrost groundwater dynamics are determined by deep soil (below 60 cm depth) moisture and groundwater recharging sources. The relationship between active soil temperatures and dynamics of suprapermafrost groundwater levels was better described by Boltzmann functions. However, the influencing thresholds of soil temperature on groundwater dynamics varied at different depths of active layers and in different slope positions, which resulted in the significant spatial heterogeneity of suprapermafrost groundwater dynamics in slope scale. Land cover change and global warming certainly altered the dynamics of suprapermafrost groundwater and the hydraulic interaction between groundwater and rivers, and consequently altered the overall hydrologic cycle of watershed scale. |
format |
Article in Journal/Newspaper |
author |
Chang Juan Wang GenXu Li ChunJie Mao TianXu |
author_facet |
Chang Juan Wang GenXu Li ChunJie Mao TianXu |
author_sort |
Chang Juan |
title |
Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau |
title_short |
Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau |
title_full |
Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau |
title_fullStr |
Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau |
title_full_unstemmed |
Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau |
title_sort |
seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of qinghai-tibet plateau |
publishDate |
2015 |
url |
http://ir.imde.ac.cn/handle/131551/9600 https://doi.org/10.1007/s11430-014-5009-y |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
SCIENCE CHINA-EARTH SCIENCES Chang Juan,Wang GenXu,Li ChunJie,et al. Seasonal dynamics of suprapermafrost groundwater and its response to the freeing-thawing processes of soil in the permafrost region of Qinghai-Tibet Plateau[J]. SCIENCE CHINA-EARTH SCIENCES,2015,58(5):727-738. http://ir.imde.ac.cn/handle/131551/9600 doi:10.1007/s11430-014-5009-y |
op_doi |
https://doi.org/10.1007/s11430-014-5009-y |
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Science China Earth Sciences |
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58 |
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5 |
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727 |
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738 |
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