| 宁夏灵武水洞沟遗址全新世的古气候环境 |
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| 引用本文： | 李秉成.宁夏灵武水洞沟遗址全新世的古气候环境[J].吉林大学学报(地球科学版),2006,36(1):49-53. |
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| 作者姓名： | 李秉成 |
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| 作者单位： | 1.长安大学 环境科学与工程学院，西安 710054;2.西北大学 地质学系，西安 710069 |
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| 基金项目： | 国家自然科学基金项目(49901611) |
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| 摘 要： | 分析宁夏灵武水洞沟遗址剖面19个样品，将孢粉图式分为Ⅰ、Ⅱ、Ⅲ3个带，分别对应早、中、晚3个时期的孢粉带。Ⅰ带为藜、蒿和毛茛-豆科优势带；Ⅱ带为榆、榛、桦、鹅耳枥、栎优势带；Ⅲ带为藜科优势带。结果表明：早全新世植被为疏林草原、干草原-草甸草原，气候偏干冷-温和半湿润；中全新世早期植被为阔叶乔灌丛草原-针叶乔灌丛草原-阔叶疏林草原，气候温暖较干-寒冷较干-较暖较干；晚期植被为疏林草原，气候相对温暖、稍凉-较温暖；晚全新世植被为干草原，气候寒冷。
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| 关 键 词： | 古气候环境 全新世 宁夏水洞沟 |
| 文章编号： | 1671-5888(2006)01-0049-05 |
| 收稿时间： | 2005-03-28 |
| 修稿时间： | 2005年3月28日 |
Holocene Paleo-Climatic Environment in Ruins of the Shuidonggou, Ningxia |
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| LI Bing-cheng.Holocene Paleo-Climatic Environment in Ruins of the Shuidonggou, Ningxia[J].Journal of Jilin Unviersity:Earth Science Edition,2006,36(1):49-53. |
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| Authors: | LI Bing-cheng |
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| Institution: | 1. School of Environment Sciences and Engineering, Chang’an University, Xi’an 710054,China;2. Department of Geology, Northwest University, Xi’an 710069,China |
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| Abstract: | With a series of geological investigation, intensive samples chosen and a large amount of spore-pollens analysis to some sections chosen from the ruins of Shuidonggou in Ningxia, the authors can see clearly that every sample had gained more than 100 grains of spore-pollens and one of these samples even gained more than 3 654 grains of spore-pollens at that time. By a careful analysis to the amount of the spore-pollens, the evolution of the vegetations in the region was explored specifically. Furthermore, it proves the characteristics of the changeable climatic environment during the period of Holocene. Finally, it draws the conclusion about the vegetations grown at that time in this region and the climatic environments it represented during the three stages of Early Holocene, Middle Holocene and Late Ho- locene. The authors have worked out quite a few pollens and spores from in nineteen samples of the loess section, and plotted a concentration spore-pollens diagrams of the loess strata. The evolution of vegetation during the Holocene and the corresponding climate in time and space in the region has been brought to light by an analysis of the variation of spore-pollens assemblages in this section. The results indicate that the climate in the Early Holocene was colder and drier,Middle Holocene was warmer and wet and Late Holocene was dry and cold. |
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| Keywords: | paleo-climatic environment Holocene Shuidonggou Ningxia |
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