| Pollen-recorded climate changes between 13.0 and 7.0 ^14C ka BP in southern Ningxia, China |
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| 作者姓名： | SUN AiZhi MAYuZhen FENG ZhaoDong LI Fei WU HuiNing |
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| 作者单位： | [1]MOE Key Laboratory of Western China＇s Environmental Systems ＆ College of Earth ＆ Environment Sciences, Lanzhou University, Lanzhou 73000, China [2]College of Resources and Technology, Beijing Normal University, Beijing 100875, China [3]Department of Geology, Baylor University, Waco, TX 76798, USA |
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| 基金项目： | Supported by the National Natural Science Foundation of China(Grant Nos.40331012 and 40421101)and NSF(Grant Nos.EAR 04-02509 and BCS 06-23478) |
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| 摘 要： | A pollen record from Haiyuan section in the southern part of Ningxia revealed a detailed history of vegetation variation and associated climate changes during the period from~13.0 to~7.0 14 C ka BP.A steppe landscape under a moderately dry(and probably cool)condition(~12.7-~12.1 14 C ka BP)was replaced by a coniferous forest dominating the landscape under a generally wet climate from~12.1 to ~11.01 4C ka BP.This generally wet period,corresponding to the European B?lling/All?rod period,can be divided into three stages:a cool and wet stage between~12.1 and~11.4 14 C ka BP,a mild and rela- tively dry stage between~11.4 and~11.2 14 C ka BP,and a mild and wet stage between~11.2 and~11.0 14 C ka BP.The coniferous forest-dominated landscape was then deteriorated into steppe landscape (~11.0-~10.6 14 C ka BP)and further into a desert steppe landscape from~10.6 to~9.8 14 C ka BP,being correspondent to the European Younger Dryas period.After a brief episode of a cool and wet climate (~9.8-~9.6 14 C ka BP),a relatively mild and dry condition prevailed during the early Holocene(~9.6- ~7.6 14 C ka BP)and then a warm and humid climate started the mid-Holocene(~7.6-~7.2 14 C ka BP).
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| 关 键 词： | 中国 宁夏南部 花粉记录 气候变化 植被 历史 |
| 收稿时间： | 1 July 2006 |
| 修稿时间： | 2006-07-012006-11-21 |
Pollen-recorded climate changes between 13.0 and 7.0 14C ka BP in southern Ningxia,China |
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| SUN AiZhi MAYuZhen FENG ZhaoDong LI Fei WU HuiNing.Pollen-recorded climate changes between 13.0 and 7.0 ^14C ka BP in southern Ningxia, China[J].Chinese Science Bulletin,2007,52(8):1080-1088. |
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| Authors: | Sun AiZhi Ma YuZhen Feng ZhaoDong Li Fei Wu HuiNing |
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| Institution: | (1) MOE Key Laboratory of Western China’s Environmental Systems & College of Earth & Environment Sciences, Lanzhou University, Lanzhou, 73000, China;(2) College of Resources and Technology, Beijing Normal University, Beijing, 100875, China;(3) Department of Geology, Baylor University, Waco, TX 76798, USA |
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| Abstract: | A pollen record from Haiyuan section in the southern part of Ningxia revealed a detailed history of vegetation variation and associated climate changes during the period from ~13.0 to ~7.0 14C ka BP. A steppe landscape under a moderately dry (and probably cool) condition (~12.7－~12.1 14C ka BP) was replaced by a coniferous forest dominating the landscape under a generally wet climate from ~12.1 to ~11.0 14C ka BP. This generally wet period, corresponding to the European Bölling/Allërod period, can be divided into three stages: a cool and wet stage between ~12.1 and ~11.4 14C ka BP, a mild and relatively dry stage between ~11.4 and ~11.2 14C ka BP, and a mild and wet stage between ~11.2 and ~11.0 14C ka BP. The coniferous forest-dominated landscape was then deteriorated into steppe landscape (~11.0－~10.6 14C ka BP) and further into a desert steppe landscape from ~10.6 to ~9.8 14C ka BP, being correspondent to the European Younger Dryas period. After a brief episode of a cool and wet climate (~9.8－~9.6 14C ka BP), a relatively mild and dry condition prevailed during the early Holocene (~9.6－~7.6 14C ka BP) and then a warm and humid climate started the mid-Holocene (~7.6－~7.2 14C ka BP). |
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| Keywords: | pollen record vegetation history climate changes southern Ningxia |
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