| 华北地台北部晚石炭世古植被演替及其古气候解释 |
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| 引用本文： | 张泓,何宗莲,王安民.华北地台北部晚石炭世古植被演替及其古气候解释[J].西北地质科学,1997(2). |
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| 作者姓名： | 张泓 何宗莲 王安民 |
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| 作者单位： | 煤炭科学研究总院西安分院 |
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| 摘 要： | 拴马桩煤系植物化石研究结果表明，华北地台北部晚石炭世的古植被在维斯发期和斯蒂芬期之交发生了重要变化：斯蒂芬期以前，种子蕨类占主导地位，随后是以Ｐｅｃｏｐｔｅｒｉｓ为代表的树蕨真蕨类植物和有节类成了植被的主要类群。这种型式的古植被改变不仅与华北晚古生代植物群成分在本溪组与太原组界线上出现的真蕨类、有节类＂新生峰点＂相一致，而且与欧美基本植被在维斯发Ｄ期－斯蒂芬期的改组大体吻合。据叶相及煤中的碳同位素分析，晚石炭世晚期存在一个古气候升温事件。上述古植被的改组可能是这个升温事件的正反馈。
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| 关 键 词： | 古植被，古气候，晚石炭世，华北 |
EVOLUTION AND PALAEOCLIMATIC INTERPRETATIONS OF THE LATE CARBONIFEROUS VEGETATION IN NORTHERN PART OF THE NORTH CHINA PLATFORM |
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| Zhang Hong, He Zonglian and Wang Anmin.EVOLUTION AND PALAEOCLIMATIC INTERPRETATIONS OF THE LATE CARBONIFEROUS VEGETATION IN NORTHERN PART OF THE NORTH CHINA PLATFORM[J].Northwest Geoscience,1997(2). |
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| Authors: | Zhang Hong He Zonglian and Wang Anmin |
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| Abstract: | Based on study of the Late Carboniferous flora from the Shuanmazhuang Coal Series in the northern part of the North China Platform, an important vegetational change at the boundary between westphlian and Stephanian in age is well recognized, i. e., the Westphalian vegetation predominated by seed-fern plants, while fern or marattialean tree fern and articulate plants reach their maximum abundance during Stephanian. This change pattern of vegetation not only agrees closely with the neogenous peak of the fern and articulate species at the boundary between the Benchi and Taiyuan Formations in whole Late Palaeozoic flora in North China, but is equivalents to the change in dominance pattern in the Late Carboniferous Euramerican vegetation as well. According to analysis of foliar physiognomy and carboisotopy geochernistry in coal, a raising temperature event during late Westphalian and Stephanian is demonstrated. Therefore the reorganization of Late Carboniferous vegetation seems to be controlled by the palaeoclimatic event. |
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| Keywords: | Palaeovegetation Palaeoclimate Late Carboniferous North China Platform |
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