古地理学报2012，Vol.14Issue(5)：639-650,12.
长白山区湿地表土植硅体特征及其环境意义
Phytolith characteristics and their significance of environment in surface soils from wetlands of Changbai Shan area
摘要
Abstract
Wetlands play an important role in the global environmental change, and phytolith analysis in surface soil of wetlands is a basis for reconstructing the palaeoenvironment in the Quaternary. In this paper, surface soil phytoliths were analyzed in six wetlands from Huanan to Hani in Changbai Shan area. The results show that the phytolith assemblages in all wetlands surface soil samples except for Shalan are similar. Elongate, crenate, rondel and point-shaped phytoliths are dominant, which reveals the cold climate. PCA and cluster analysis are used to find the environmental significance of the phytoliths assemblages in different wetlands surface soils. The results indicate that temperature is the chief factor to control the otherness of phytoliths assemblages in wetlands in Changbai Shan area, at the same time, the types and percentages of phytoliths are closely related to the plants, humidity and elevation in the sample sites. Combining difference analysis with the change trend analysis in phytolith dimension, we can find that the width and length of bicrenate, polycrenate and crenate sinuate as well as the length of elongate psilate, the length of ridge and the height in rondel hipped and width of the point-shaped phytoliths exist significant difference and increase with the temperature. In sum, the phytolith morphotypes in all the sites are similar, but differences in the warm index and the size of the phytoliths are obvious. The result reveals that the phytolith assemblages and the size are sensitive to temperature change.关键词
长白山区/湿地/植硅体组合和大小/方差分析Key words
Changbai Shan area/ wetlands/ phytolith assemblages and size/ one-way anova分类
天文与地球科学引用本文复制引用
郭梅娥,李楠楠,介冬梅,葛勇,王婷,李荣麟,王刘奎,王培明,刘洪妍,刘利丹..长白山区湿地表土植硅体特征及其环境意义[J].古地理学报,2012,14(5):639-650,12.基金项目
国家自然科学基金项目(编号:40971116)、环保行业公益项目(编号:201109067)和高校基本业务费资助前瞻性基金项目(编号:10JCXK010)共同资助 （编号:40971116）
