南昌市不同植物类群叶片氮磷浓度及其化学计量比

被引:51
作者
甘露
陈伏生
胡小飞
田秋香
葛刚
詹书侠
机构
[1] 南昌大学生命科学学院生物学基础实验中心
关键词
养分循环; 化学计量比; 植物功能群; 城市园林植物;
D O I
10.13292/j.1000-4890.2008.0093
中图分类号
Q948 [植物生态学和植物地理学];
学科分类号
071012 ; 0713 ;
摘要
对南昌大学前湖校区89种主要植物叶片的N、P浓度及其化学计量比进行了研究,结果表明:乔灌、常绿、针叶、种子、裸子和单子叶植物类群的N浓度分别低于相对应的草本、落叶、阔叶、蕨类、被子和双子叶植物类群,而C3和C4植物差异不显著;乔灌、常绿和裸子植物类群的P浓度含量分别低于相对应的草本、落叶和被子植物类群,而针叶和阔叶、蕨类和种子、单子叶和双子叶、C3和C4植物类群间差异不显著;乔木、阔叶、被子和双子叶植物类群叶片N/P分别高于相对应的灌草、针叶、裸子和单子叶植物类群,而常绿和落叶、蕨类和种子、C3和C4植物类群之间差异不显著。可见,不同类型植物对N和P的吸收利用存在差异,且对不同养分供应采取不同的适应对策。结合研究区土壤养分现状,建议优先选择常绿、针叶、裸子和单子叶植物类群作为城市园林植物。
引用
收藏
页码:344 / 348
页数:5
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