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叶缘分析法是一种利用现代植被木本双子叶植物全缘叶物种百分比与年均温的函数关系,定量重建化石植物群古年均温的方法。该方法在新生代植物群的古年均温定量重建研究中得到了广泛的应用。目前基于世界不同地区现代植被的研究表明,尽管全缘叶物种百分比与年均温存在很好的相关性,但其相关性具有地区差异性。本文旨在总结叶缘分析法的研究进展,并介绍基于中国植被建立的叶缘—年均温中国模型;同时,采用该模型重建了中国新生代不同时期植物群的古年均温,且与前人采用其它模型得到的年均温重建值相比较。结果表明,叶缘—年均温中国模型能够有效地重建中国新生代植物群的古年均温值。
Leaf margin analysis is a method of quantitatively reconstructing the average annual temperature of fossil plants by taking advantage of the relationship between the percentage of whole leaf species of modern dicotyledonous plants and the annual average temperature. This method has been widely used in the study of Cenozoic average temperature and quantitative reconstruction of Cenozoic flora. Current studies based on modern vegetation in different parts of the world show that although the percentage of whole leaf species correlates well with the average annual temperature, the correlation is regionally different. This paper aims to summarize the research progress of the leaf margin analysis method and to introduce the leaf margin-annual mean temperature Chinese model based on vegetation in China. At the same time, this model is used to reconstruct the average annual temperature of the flora in different stages of the Cenozoic in China Previous years using other models obtained average annual temperature reconstruction value compared. The results show that the leaf margin - annual mean temperature Chinese model can effectively reconstruct the average annual temperature of the Cenozoic flora of China.