山西霍山不同功能型植物叶性特征的比较研究

Comparisons of Leaf Traits among Different Functional Types of Plant from Huoshan Mountain in the Shanxi Province

选取山西霍山地区30种主要植物(乔木7种、灌木10种、草本植物13种),分别测定了其比叶面积(SLA),单位重量叶氮含量(Nmass)及单位面积叶氮含量(Narea),初步探讨了3种功能型植物的部分叶性特征,并进行了比较分析。结果表明:在霍山地区这个特定的环境下,草本植物的SLA最大,灌木次之,乔木最小;对于Nmass,同样是草本植物最高,灌木次之,乔木最低;而Narea乔木最高,灌木次之,草本最低,表现出在相同环境下,不同功能型植物的叶性特征的差异性。不同功能型植物的SLA与Nmass呈正相关关系,与Narea呈负相关关系,表现出在相同环境下,不同功能型植物叶性关系的相似性。

We measured specific leaf area（SLA）,and mass-based（Nmass） and area based（Narea） leaf nitrogen concentrations for 30 plant species in the Huoshan Mountain of Shanxi province.The collected data were further compared between three different plant functional types.The results showed that the order of the average SLA and average Nmass was grassesshrubstrees,while average Narea was treesshrubsgrasses.This suggested that different functional plants have different traits to adapt to their environment.For species,SLA was positively correlated with Nmass but negatively correlated with Narea,which showed the similarity of their leaf traits in the environment.