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贵州普定喀斯特森林3种优势树种叶片元素含量特征
旷远文; 温达志; 闫俊华; 刘世忠; 褚国伟; 周传艳; 王国勤; 张倩媚
Source Publication应用与环境生物学报
2010
Issue2Pages:158-163
Keyword喀斯特森林 叶片元素含量 大叶栎 猴樟 刺楸
Abstract为探讨喀斯特森林优势树种叶片营养特征及环境变化对其可能带来的重金属胁迫,测定了贵州普定山区喀斯特森林3个优势乔木树种——大叶栎(Quercus griffithii)、猴樟(Cinnamomum bodinieri)和刺楸(Kalopanax septemlobus)的叶片元素(N、P、K、Ca、Mg、Mn、Cu、Zn、Cr、Ni、Pb和Al)含量,并分析了N、P、Ca、K、Mg和Al含量比值。结果表明,3种优势乔木叶片营养元素含量特征均表现为Ca>K>Mg>N>P>Mn型,重金属元素含量特征均为Al>Zn>Cu>Ni>Pb>Cr型;Ca和K是喀斯特森林乔木最主要的营养元素,根据叶片Ca+Mg含量,3种优势乔木均属于随遇型喀斯特植物;3个优势树种叶片的重金属含量均处于正常范围,但大叶栎叶片Cu、Zn、Ni和Pb含量已接近其在植物正常范围的上限;对叶片元素含量比值的分析表明,喀斯特山区森林优势树种都属于N制约性植物,其叶片还未受到Al毒的潜在危害.图3表1参43
Language中文
Document TypeCNKI期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/17266
Collection历年回溯文献
Recommended Citation
GB/T 7714
旷远文,温达志,闫俊华,等. 贵州普定喀斯特森林3种优势树种叶片元素含量特征. 2010.
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