长白山北坡垂直植被带木本植物的植硅体形态特征及其环境意义  

MORPHOLOGICAL CHARACTERISTICS OF PHYTOLITH OF WOODY PLANTS FROM THE VERTICAL VEGETATION ZONES ON THE NORTH SLOPE IN CHANGBAI MOUNTAIN AND ITS ENVIRONMENTAL SIGNIFICANCE

作　　者：孙艳磊[1] 介冬梅[1] 刘朝阳[1] 刘红梅[1] 

机构地区：[1]东北师范大学城市与环境科学学院,吉林长春130024

出　　处：《微体古生物学报》2009年第3期261-270,共10页Acta Micropalaeontologica Sinica

基　　金：国家自然科学基金青年科学基金项目(项目号:40201052);国家重点基础研究发展计划(973)项目(项目号:2009CB426305);东北师范大学"十一五"科技创新建设计划培育项目(项目号:NENU-Stb07002)资助

摘　　要：长白山垂直分布的植被是温带到寒带植被的组合,能够很好地反映温度变化趋势,研究其植物的植硅体对于了解长白山气候变迁有重要意义。作者选择长白山9科14属木本植物的叶子,采用湿式灰化法对其进行植硅体分析,计算了不同形态植硅体的百分含量,同时测量了长度和宽度。研究表明:长白山北坡垂直植被带中典型木本植物的叶子具有8种植硅体类型:表面有突起、皱纹的椭圆形、卵形;具有螺旋纹的纺锤状以及导管形、弓形、鸟嘴状、扁棒型、石块状、松树皮状、不确定型。在14种木本植物叶子中都出现了扁棒型植硅体,其含量随海拔升高逐渐增加,说明在长白山区扁棒型植硅体是示冷型植硅体。阔叶类木本植物叶子中,具有螺旋纹的纺锤体及导管形、弓形植硅体占优势;裸子植物叶子中松树皮状、石块状植硅体,其含量随海拔升高逐渐递减,说明松树皮状和石块状植硅体是示暖型植硅体。The vertical vegetation distribution in Changbai Mountain is a combination of vegetation from temperate to frigid zones. Researches on the phytoliths of vegetations in the Changbai Mountain have great significance for the study of climate change. In this paper, selected 14 genera, 9 families of woody plants in the Changbai Mountain are analyzed for phytolith morphology studies. There are characteristic phytoliths in the typical woody plants from the vertical vegetation zones in the Changbai Mountain： Spiralling fusiform or Catheterform, Arciform, Rugulate oblong or ovate, Beakform, Bar, Stoneform, Pine Barkform, Uncertainform. Bar is in all the 14 kinds of woody plants, and its content increases from the conifer mixed forest zone to the ermanii forest zone in which coincides with the climate change of Changbai Mountain. In the broad-leaved woody plants, Spiralling fusiform, Catheterform and Arciform are the characteristic forms; Pine Barkform and Stoneform are the unique patterns in gymnosperm, and their gradually decrease from the conifer mixed forest zone to the ermanii forest zone, which suggests that Pine Barkform Stoneform is a warm climate indicator.

关 键 词：植硅体形态 垂直植被带 木本植物 长白山 吉林 

分 类 号：Q914[天文地球—古生物学与地层学]