| 青藏高原全新世1月和7月气温序列重建 |
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| 引用本文： | 王青波,侯光良,李凡,杨阳.青藏高原全新世1月和7月气温序列重建[J].冰川冻土,2016,38(2):368-378. |
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| 作者姓名： | 王青波 侯光良 李凡 杨阳 |
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| 作者单位： | 青海师范大学生命与地理科学学院,青海西宁,810008;青海师范大学青海省自然地理与环境过程重点实验室,青海西宁,810008 |
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| 基金项目： | 国家自然科学基金项目(41550001) |
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| 摘 要： | 青藏高原自然环境受人类干扰相对较小,为利用古孢粉记录重建气候因子提供了可能,高原过去气候因子的重建对于预测未来气候变化趋势有重要意义.通过选取的29条高原化石孢粉记录,利用现代类比法和化石孢粉点与高原气温的函数关系,把化石孢粉点古气温转化为青藏高原古气温,重建了高原全新世1月和7月古气温序列.结果表明:对于1月和7月气温而言,全新世早期(11.5~8.5ka BP)为气温波动上升期;全新世中期(8.5~4.6 ka BP)为全新世大暖期,气温整体高于现代;全新世晚期(4.6 ka BP~至今)又可分为两个阶段,一个是4.6~2.4 ka BP,在此阶段1月和7月气温都有减小的趋势,另一个阶段则是2.4 ka BP至今,气温出现反常的趋势.
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| 关 键 词： | 青藏高原 全新世 化石孢粉 现代类比法 |
Reconstruction of the January and July temperature sequences of the Tibetan Plateau during the Holocene |
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| WANG Qingbo,HOU Guangliang,LI Fan,YANG Yang.Reconstruction of the January and July temperature sequences of the Tibetan Plateau during the Holocene[J].Journal of Glaciology and Geocryology,2016,38(2):368-378. |
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| Authors: | WANG Qingbo HOU Guangliang LI Fan YANG Yang |
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| Abstract: | The human’s interference on the natural environment in the Tibetan Plateau is relatively small,which provides a possible for reconstructing the climate factors by using the ancient sporo-pollen record. The reconstruc-tion of climate factors on the plateau in the past has important significance for predicting future climate variation. In this article,29 fossil sporo-pollen records on the plateau were selected to transform into the ancient tempera-ture records and reconstructed the January and July temperature sequences of the Tibetan Plateau during the Holo-cene by using modern analogy method and the function relation between of the fossil sporo-pollen sites and holis-tic plateau temperature. The reconstructed results show that in terms of January and July temperature,the early Holocene(11. 5~8. 5 ka BP)was a period of temperature rising undulately;the mid-Holocene(8. 5~4. 6 ka BP)was megathermal,with temperature warmer than that in present;the late Holocene(4. 6 ka BP~)can be divided into two stages,one was 4. 6~2. 4 ka BP,when the January and July temperatures had decreased;an-other one was from 2. 4 ka BP to now,when temperature has been abnormal. |
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| Keywords: | Tibetan Plateau Holocene fossil pollen modern analogy method |
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