两种圆柏属植物叶片元素季节性变化的比较  

Comparative study on seasonal variations in element content in leaves of Sabina chinensis and Sabina przewalskii

作　　者：李善家[1] 汤红官[2] 张有福[2] 陈拓[2] 陈银萍[3] 安黎哲[2] 蔺海明[1] 

机构地区：[1]甘肃农业大学农学院,甘肃兰州730070 [2]中国科学院寒区旱区环境与工程研究所,甘肃兰州730000 [3]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《兰州大学学报（自然科学版）》2007年第6期25-28,共4页Journal of Lanzhou University(Natural Sciences)

基　　金：中国科学院西部之光项目;国家自然科学基金项目(40301016);甘肃省自然科学基金项目(3ZS051-A25-067)资助.

摘　　要：运用能量色散谱(EDS)分析技术对同属常绿乔木抗旱抗寒性不同的祁连圆柏和圆柏在不同月份叶片元素质量分数进行分析,研究了两种圆柏属植物叶片元素的季节变化和抗旱抗寒性的关系.结果表明:祁连圆柏元素质量分数高低的顺序为Ca>K>Cl>Si>S>Mg>P>Na,而圆柏的为Ca>K>Cl>Si>S>P>Mg>Na.常温生长和低温休眠阶段Ca,Cl,Mg和Na在祁连圆柏和圆柏中的相对高低发生变化.在冬季,圆柏P和S积累较多,祁连圆柏Na,Mg,Si积累较多.圆柏属植物叶片元素季节的规律性变化是对环境的适应性反应.The content of several elements in the leaves of Sabina chinensis and Sabina przcwalskii were determincd by EDS analysis in different months in order to probe into the seasoual variatious of their element content. The results showed that the elements content in leaves of Sabina przcwalskii was as follows： Ca〉K〉Cl〉Si〉S〉Mg〉P〉Na; however, in leaves of Sabina chinensis, Ca〉K〉Cl〉Si〉S〉P〉Mg〉Na. hi normal and cold season, distinction of Ca, C1, Mg and Na contents in Sabina przewalskii and Sabina chinensis changed. In winter, P and S accumulated in Sabina chinensis; however, Na, Mg and Si increased in Sabina przewalskii. So it was due to the characteristics of adaptation to temperature variation that the element content of leaves in Sabina przewalskii and Sabina chinensis changed following the above law.

关 键 词：圆柏属 元素 抗旱抗寒性 季节变化 

分 类 号：Q948[生物学—植物学] Q142