东北地区泥炭表土中植硅体的形态特征

表土沉积物中植硅体组合研究是恢复第四纪古植被、重建第四纪古环境、划分对比地层的基础。对东北地区41个地点的泥炭表土进行植硅体分析,发现东北泥炭表土中植硅体含量丰富,主要可分为哑铃型、鞍型、扇型、帽型、尖型、齿型、棒型、方型、长方型、梯型和其它11种类型。植硅体表面形态特征不一,表面纹饰多为突起或凹坑,其中哑铃型植硅体可细分为2种,扇型、齿型和棒型植硅体各分5种,帽型和尖型植硅体各分3种。

Morphological Characteristics of Phytolith in Surface Peat Deposits of Northeast China

The study of phytolith in the surface deposits of different sediments is a basic work of Quaternary researches such as paleobotanic recovery,paleoenvironment reconstruction,stratum contrastion,etc.Through the phytolith study of surface deposits from 41 peat areas in Northeast China,plenty of phytolith are found.They can be divided into 11 types: dumbbell-shaped,saddled,fan-shaped,square-shaped,rectangular-shaped,trapezium-shaped,crenate-shaped,cap-shaped,point-shaped,elongate,and other shapes.The surfaces of each kind of phytolith are different,most of the decorations are concave or protuberant.The Sculpture on the dumbbell-shaped phytolith can be divided into 2 kinds,fan-shaped,crenate-shaped and elongate-shaped phytolith can be divided into 5 kinds,and cap-shaped and point-shaped phytolith can be divided into 3 kinds.