The relationship between surface pollen and vegetation types in Yangmingshan National Park
Date Issued
2014
Date
2014
Author(s)
Kiang, Yii-Shin
Abstract
Pollen and spores can be important fossil evidence of ancient vegetation and paleoclimate, because these tiny grains can be preserved in sediments for a very long time. To understand the relationship between fossil pollen and ancient vegetation, we have to study their modern analog, the pollen in surface soil and the modern vegetation.
Fifty surface pollen samples from Yangmingshan National Park are analyzed using the cluster analysis method in this study. They are grouped into different vegetation types according to their components of the pollen sum. The differences between pollen taxa and vegetation taxa are also discussed. The fifty samples can be grouped into two categories, grassland and forest. The grassland is dominant by Poaceae. The forest includes Cryptomeria plantation and some natural vegetation. Other samples not belong to grassland or forest are collected from the transition zone. The present results agree with the reported vegetation classifications which were obtained by vegetation investigation. This indicates that although the vegetation types in the park have a mosaic pattern, the surface pollen can still reflect the vegetation types. The pollen data and some geographic factors are also analyzed by the method of detrended correspondence analysis (DCA). The results reveal that among altitude, aspect and slope, the altitude is the most important factor affecting pollen distribution.
Subjects
表土花粉
植被類型
集群分析法
降趨對應分析
陽明山國家公園
SDGs
Type
thesis
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