The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau
Alpine cold ecosystem with permafrost environment is quite sensitive to climatic changes and the changes in permafrost can significantly affect the alpine ecosystem. The vegetation coverage, grassland biomass and soil nutrient and texture are selected to indicate the regime of alpine cold ecosystems...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/2514 2024-06-23T07:56:02+00:00 The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau Genxu Wang(王根绪) Yuanshou Li Qingbai Wu Yibo Wang 2006 http://ir.imde.ac.cn/handle/131551/2514 英语 eng Science in China Series D: Earth Sciences Genxu Wang,Yuanshou Li,Qingbai Wu,et al. The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau[J]. Science in China Series D: Earth Sciences,2006,49(11):1156-1169. http://ir.imde.ac.cn/handle/131551/2514 Permafrost Environment Alpine Cold Ecosystem Statistics Relationship Climate Change Impacts 期刊论文 2006 ftchinacadscimhe 2024-06-03T09:51:01Z Alpine cold ecosystem with permafrost environment is quite sensitive to climatic changes and the changes in permafrost can significantly affect the alpine ecosystem. The vegetation coverage, grassland biomass and soil nutrient and texture are selected to indicate the regime of alpine cold ecosystems in the Qinghai-Tibet Plateau. The interactions between alpine ecosystem and permafrost were investigated with the depth of active layer, permafrost thickness and mean annual ground temperature (MAGTs). Based on the statistics model of GPTR for MAGTs and annual air temperatures, an analysis method was developed to analyze the impacts of permafrost changes on the alpine ecosystems. Under the climate change and human engineering activities, the permafrost change and its impacts on alpine ecosystems in the permafrost region between the Kunlun Mountains and the Tanggula Range of Qinghai-Tibet Plateau are studied in this paper. The results showed that the permafrost changes have a different influence on different alpine ecosystems. With the increase in the thickness of active layer, the vegetation cover and biomass of the alpine cold meadow exhibit a significant conic reduction, the soil organic matter content of the alpine cold meadow ecosystem shows an exponential decrease, and the surface soil materials become coarse and gravelly. The alpine cold steppe ecosystem, however, seems to have a relatively weak relation to the permafrost environment. Those relationships resulted in the fact that the distribution area of alpine cold meadow decreased by 7.98% and alpine cold swamp decreased by 28.11% under the permafrost environment degradation during recent 15 years. In the future 50 years the alpine cold meadow ecosystems in different geomorphologic units may have different responses to the changes of the permafrost under different climate warming conditions, among them the alpine cold meadow and swamp ecosystem located in the low mountain and plateau area will have a relatively serious degradation. Furthermore, from the ... Report permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Permafrost Environment Alpine Cold Ecosystem Statistics Relationship Climate Change Impacts |
spellingShingle |
Permafrost Environment Alpine Cold Ecosystem Statistics Relationship Climate Change Impacts Genxu Wang(王根绪) Yuanshou Li Qingbai Wu Yibo Wang The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau |
topic_facet |
Permafrost Environment Alpine Cold Ecosystem Statistics Relationship Climate Change Impacts |
description |
Alpine cold ecosystem with permafrost environment is quite sensitive to climatic changes and the changes in permafrost can significantly affect the alpine ecosystem. The vegetation coverage, grassland biomass and soil nutrient and texture are selected to indicate the regime of alpine cold ecosystems in the Qinghai-Tibet Plateau. The interactions between alpine ecosystem and permafrost were investigated with the depth of active layer, permafrost thickness and mean annual ground temperature (MAGTs). Based on the statistics model of GPTR for MAGTs and annual air temperatures, an analysis method was developed to analyze the impacts of permafrost changes on the alpine ecosystems. Under the climate change and human engineering activities, the permafrost change and its impacts on alpine ecosystems in the permafrost region between the Kunlun Mountains and the Tanggula Range of Qinghai-Tibet Plateau are studied in this paper. The results showed that the permafrost changes have a different influence on different alpine ecosystems. With the increase in the thickness of active layer, the vegetation cover and biomass of the alpine cold meadow exhibit a significant conic reduction, the soil organic matter content of the alpine cold meadow ecosystem shows an exponential decrease, and the surface soil materials become coarse and gravelly. The alpine cold steppe ecosystem, however, seems to have a relatively weak relation to the permafrost environment. Those relationships resulted in the fact that the distribution area of alpine cold meadow decreased by 7.98% and alpine cold swamp decreased by 28.11% under the permafrost environment degradation during recent 15 years. In the future 50 years the alpine cold meadow ecosystems in different geomorphologic units may have different responses to the changes of the permafrost under different climate warming conditions, among them the alpine cold meadow and swamp ecosystem located in the low mountain and plateau area will have a relatively serious degradation. Furthermore, from the ... |
format |
Report |
author |
Genxu Wang(王根绪) Yuanshou Li Qingbai Wu Yibo Wang |
author_facet |
Genxu Wang(王根绪) Yuanshou Li Qingbai Wu Yibo Wang |
author_sort |
Genxu Wang(王根绪) |
title |
The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau |
title_short |
The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau |
title_full |
The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau |
title_fullStr |
The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau |
title_full_unstemmed |
The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau |
title_sort |
impacts of permafrost changes on alpine ecosystem in qinghai-tibet plateau |
publishDate |
2006 |
url |
http://ir.imde.ac.cn/handle/131551/2514 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Science in China Series D: Earth Sciences Genxu Wang,Yuanshou Li,Qingbai Wu,et al. The Impacts of Permafrost changes on Alpine Ecosystem in Qinghai-Tibet Plateau[J]. Science in China Series D: Earth Sciences,2006,49(11):1156-1169. http://ir.imde.ac.cn/handle/131551/2514 |
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1802648871772356608 |