摘要
植硅体分析在古环境、古生态、环境考古、植物分类等众多领域研究中逐渐显示出其重要的作用,其应用潜力依赖于现代植硅体形态基础研究工作的深入。文章主要针对我国热带、亚热带地区常见的棕榈科15个属20个种植物进行了植硅体形态鉴定和多项形态参数(大小、突起等)的测量分析,同时对旅人蕉科的白花扇芭蕉、蝎尾蕉科的黄芭蝎尾蕉、苏木科的无忧树进行了对比研究。结合聚类分析方法把植硅体形态分为5个大的类型,棕榈科植硅体主要包括刺球形、水母形和草帽形3种形态。白花扇芭蕉植硅体呈褶球形,黄芭蝎尾蕉植硅体呈飞梭形,无忧树不含有植硅体。同时,给出了不同类型形态参数的大小和范围,为利用棕榈科植硅体等进行古环境研究提供了基础。
Solid deposits of SiO2 form in many plants at specific intracellular and extracellular locations. These deposits are called phytoliths. Phytolith analysis is becoming more and more important in the reconstruction of paleoenvironment. In addition, it＇s also a useful tool in the fields of paleoecology, environmental-archaeology, and plant-taxonomy. This paper focuses on the morphological differences of phytoliths from 15 genera, 20 species of Palmae, which are typically found in tropical and sub-tropical areas. Moreover, we compared the phytoliths from Palmae plants to those of Strelitzia nicolai, Heliconia lathispatha, and Saraca dives. The results of microscopy and cluster analysis show that the phytolith morpho-types can be classified into five categories. Three morpho-types including spherical-spinulose shaped, jelly-fish shaped, and conical-hat shaped are from Palmae, while phytoliths from Strelitzia nicolai and Heliconia lathispatha have been attributed to spherical-draped and shuttle shaped, respectively. To date no phytoliths for Saraca dives have been discovered. We summarized the morphological characteristics of the five phytolith morpho-types with the hope that they can be used for paleoenvironmental research in the future when phytoliths of Palmae plants can be found from stratigraphic strata.
出处
《第四纪研究》
CAS
CSCD
北大核心
2005年第6期785-792,共8页
Quaternary Sciences
基金
国家杰出青年基金项目(批准号:40325002)
国家自然科学基金项目(批准号:40271117)
国家自然科学基金重点项目(批准号:40331011)资助
关键词
植硅体
棕榈科
形态分类
古环境意义
phytoliths, Palmae, morphology, paleoenvironment significance
