湖泊科学2017，Vol.29Issue(1)：224-233,10.DOI:10.18307/2017.0124
长春南湖芦苇（Phragmites australis）茎、叶植硅体随生长期和生境的变化特征∗
Response of phytoliths in Phragmites australis stem and leaf to different growth periods and humidity in Lake Nanhu, Changchun City
摘要
Abstract
The research on phytoliths of Phragmites australis in different growth periods and under different humidity, can provide theoretical basis for the reconstruction of paleovegetation and paleoclimate. Eighteen P. australis samples were selected in Lake Nanhu in Changchun City from May to October and along the humidity gradient of aquatic, seasonal waterlogged and mesic habitats. We then extracted and compared the P. Australis phytoliths of stems and leaves from different growth periods and different habitats. First of all, phytolith assemblages in stems and leaves were different markedly. For example, the contents of rondel and some other phytolith (bulliform, lanceolate and elongate) in stems were higher than those in leaves, while the contents of the silicified stomata in stems were significantly lower than those in leaves. Secondly, the phytolith assemblages in leaves and stems differed. The con-tents of silicified stomata and some large phytoliths in leaves increased, while contents of saddle and rondel in leaves reduced with the growth of P. australis. In contrast, contents of silicified stomata and lanceolate in stems increased firstly and then decreased, while contents of rondel decreased firstly and then increased. In addition, with the growth of plants, the content of elongate in-creased steadily, while the content of saddle unchanged. Finally, the contents of phytoliths differed under different habitats. For ex-ample, the contents of silicified stomata in leaves increased gradually from mesic to aquatic habitats, suggesting that silicified sto-mata may indicate the humid environment.关键词
芦苇/植硅体/生长期/湿度/长春南湖Key words
Phragmites australis/phytolith/growth period/humidity/Lake Nanhu of Changchun City引用本文复制引用
高桂在,介冬梅,刘利丹,刘洪妍,高卓,李德晖,李楠楠..长春南湖芦苇（Phragmites australis）茎、叶植硅体随生长期和生境的变化特征∗[J].湖泊科学,2017,29(1):224-233,10.基金项目
环保行业公益项目（201109067）和国家自然科学基金项目（41471164，40971116）联合资助 （）
