摘要
大青山位于中国北方干旱、半干旱过渡地带,对环境反应敏感。在冰缘环境、古植被等方面保留了全新世环境变化的证据。全新世期间经历了4次千年尺度的气候变化周期。晚更新世晚期气温较今低7℃左右,全新世适宜期较今高1—2℃,新冰期较今低2.0—2.5°,植被带垂直变化幅度达200—600m。
Many periglacial phenomena and paleobotany evidinces of environmental changes were retained in the Daqingshan area of northern China. This arid-semiarid area is sensitive to climatic changes. There were four climatic periods with the time range of one thousand years during Holocene. The annual mean temperature during Hypsithermal is 1-2℃ higher than today. On the other hand, the annual mean temperature is 2.0- 2.5℃ lower during Neoglaciation and about 7℃ lower during the late period of Late Pleistocene than that of the present time. The fluctuation range of vertical vegetation belts was about 200-600 m during Holocene.
出处
《冰川冻土》
CSCD
北大核心
1992年第4期325-331,共7页
Journal of Glaciology and Geocryology
基金
自然科学基金委员会资助项目
关键词
大青山
全新世
冰缘
环境变化
Daqingshan Mt., Holocene, periglacial processes, environmental changes
