| 白洋淀地区近3万年来的古环境与历史上人类活动的影响 |
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| 引用本文： | 何乃华,朱宣清.白洋淀地区近3万年来的古环境与历史上人类活动的影响[J].海洋地质与第四纪地质,1992,12(2):79-88. |
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| 作者姓名： | 何乃华 朱宣清 |
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| 作者单位： | 河北省科学院、计经委地理研究所
(何乃华)，河北省科学院、计经委地理研究所(朱宣清) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文根据沉积环境特征的研究和~(14)C年代的测定表明,本区近3万年来的岩层,可划分为五个层段。主要是河流或河流泛滥相沉积。全新世底界为6m。历史上白洋淀多次变化,人类活动是影响变化的主导因素。
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| 关 键 词： | 古环境 沉积 人类活动 |
PALAEOENVIRONMENT CHANGES SINCE 30,000 a. B. P. AND EFFECTS OF HUMAN ACTIVITIES IN THE BAIYANGDIAN AREA |
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| He Naihua,Zhu Xuanqing.PALAEOENVIRONMENT CHANGES SINCE 30,000 a. B. P. AND EFFECTS OF HUMAN ACTIVITIES IN THE BAIYANGDIAN AREA[J].Marine Geology & Quaternary Geology,1992,12(2):79-88. |
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| Authors: | He Naihua Zhu Xuanqing |
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| Abstract: | Based on studies of lithology, spatial distribution of lithofacies, grains micropalaeontology, superficial structure of quartz particles, pollen analysis and 14C dating data from drill holes, the palaeoenvironment of Baiyangdian area since 30,000 a. B. P., was made clear: sediments were mainly fluvial or pluvial, and a little lacustrine. Subsand sediments best developed, clay and subclay sediments were mostly interbedded with subsa'nd, and silty subclay sediments were rather unstable in distribution. The thickness of Holocene deposit was about 6m. Morden lacustrine sediment is distributed on the surface of the land. Human activities have played a leading role in the environment changes in the Baiyangdian area. |
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| Keywords: | Palaeoenvironment sedimentary feature Human activities |
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