三种园林植物叶形态生理指标及其环境指示作用

Leaf Morphological and Physiological Traits and Environmental Indications of Three Gardens Plant Species in Southern China

通过测定3种南方园林植物的叶面积、叶片含水量、比叶面积和叶绿素指数4项形态和生理指标,并对两种不同环境条件下各指标的差异进行分析,验证3种园林植物利用资源及对环境适应的能力。结果表明,高山榕(Ficus altissima)生长较快但不能较好地适应大气污染,白千层(Melaleuca quinquenervia)能抗大气污染,而尖叶杜英(Elaeocarpus apiculatus)更能适应资源丰富的环境条件。

Gardens plant is an essential element for gardening. To use plants rationally, leaf morphological and physiological traits, i. e. , leaf area, leaf water content, specific leaf area （S/A） and chlorophyll index, are important variables in plant ecology and related to abilities of plant growth and survival. In this paper, we examined these four leaf traits of three gardens plants, which grow under two different environmental conditions. The abilities of the three plants to use resources and adapt to the environment were verified by means of comparing the leaf traits among three plants and analyzing the variations of leaf traits under two different environments. The results showed that Ficus altissima grew faster than the others but had weak ability to adapt to air pollution,Melaleuca quinquenervia could tolerate air pollution and Elaeocarpus apiculatus could grow better in habitats with sufficient resource.