Holocene periglacial processes and environmental changes in Daqingshan mountains, inner Mongolia, China
Abstract Periglacial phenomena and palaeobotany evidence of environmental changes are present in the Daqingshan area, northern China. This arid‐semiarid area is sensitive to climatic change. There were four climatic periods during the Holocene. During the Hypsithermal, the annual mean temperature wa...
| Published in: | Permafrost and Periglacial Processes |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1992
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1002/ppp.3430030108 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.3430030108 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.3430030108 |
| Summary: | Abstract Periglacial phenomena and palaeobotany evidence of environmental changes are present in the Daqingshan area, northern China. This arid‐semiarid area is sensitive to climatic change. There were four climatic periods during the Holocene. During the Hypsithermal, the annual mean temperature was 1–2 °C higher than today. On the other hand, the annual mean temperature was 2.0–2.5 °C lower during recent glaciation and about 7 °C lower at the end of the Late Pleistocene. The fluctuation of vertical vegetation belts was about 200–600 m during the Holocene. Des phénomènes périglaciaires et des observations paléobotaniques démontrent l'existence de changements de l'environnement dans la région de Daqingshan, au nord de la Chine. Cette région aride ou semi‐aride est très sensible aux changements climatiques. Quatre périodes climatiques ont été reconnues pendant l'Holocène. Pendant l'Hypsithermal, la température moyenne annuelle était 1 á 2 °C plus élevée qu'aujourd'hui. D'autre part, la température moyenne annuelle était 2,0 a 2,5 °C plus basse pendant la glaciation récente et environ 7 °C plus élevée à la fin du Pléistocène. Les modifications des limites verticales de la végétation pendant l'Holocène ont été comprises approximativement entre 200 et 600 m. |
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