红树植物秋茄和红海榄叶片元素含量及季节动态的比较研究

研究了福建九龙江口秋茄（Kandelia candel L.）和红海榄（Rhizophora stylosa G.）成熟叶片N、P、K、Na、Ca、Mg和CI等元素含量的季节变化和元素间的关系。结果表明秋茄和红海榄同为红树科树种，生境相同且同属拒盐植物，但在元素积累及季节变化模式上存在较大差别。秋茄和红海榄叶片高盐分和Ca含量及低K／Na比，这是我们对盐渍生境的一种适应。秋茄无机渗透调节剂（主要指K^ 、Na^ 、Ca^2 、Mg^2 和CI^-）含量夏季高于冬季，而红海榄与之完全相反。秋茄能够通过主动积累有机渗透调节剂来适应低温，而红海榄不能。对秋茄和红海缆抗寒机制进行了讨论。

Comparative study on seasonal changes in element concentrations in leaves of Kandelia candel and Rhizophora stylosa at Jiulongjiang estuary

The seasonal changes of N, P, K, Na, Ca, Mg and Cl concentrations in the mature leaves of Kandelia candel L Druce and Rhizophora stylosa Griff at Jiulongjiang estuary were studied in the resent study, and the relationships among elements were discussed Although K candel and R stylosa all belong to Rhizophoraceae and salt exclusion types and occur on the same habitat, they were different in the patterns in terms of element accumulation and seasonal changes The leaves of K ...