广州火炉山千年桐+黧蒴锥+山油柑群落特征及物种多样性研究

目的]调查广州市植物种类组成、外貌、群落结构。方法]采用样方调查法,对广州市火炉山千年桐+黧蒴锥+山油柑群落的群落特征和物种多样性进行研究。结果]在1 200 m2样地中有维管植物共73种,隶属43科64属。群落外貌常绿,生活型以矮高位芽为主(占34.24%)。整个群落的物种丰富度指数Margalef指数为10.035 4,Simpson指数为0.951 6,Shannon-Wiener指数为3.443 6,均匀度指数为0.807 9,该群落的层次格局为灌木层乔木层草本层藤本层。4个不同地区群落(乔木层)物种多样性比较结果显示,千年桐+黧蒴锥+山油柑群落的物种多样性高于深圳大鹏香蒲桃群落和佛山大浩湖山黄麻群落,但比澳门黑沙水库群落低。结论]该研究可为保护当地的植被和防护林建造提供参考。

Study on Characteristics and Species Diversity of Glycosmis parviflora + Aleurites montana + Castanopsis fissa Community in Huolu Hill,Guangzhou

Objective] Component,physiognomy and community structure of plant species were investigated.Method] Using quadrats survey method,community characteristics and species diversity of Glycosmis parviflora + Aleurites montana + Castanopsis fissa community in Huolu Hill of Guangzhou was studied by field investigation method.Result] There were 73 species of vascular plants belonging to 64 genera and 43 families in plots with area of 1200 m2.This community was evergreen all the year round,and is characterized by Nanophane rophytes (34.24％).The species diversity of the community is relatively low with Margalef index of 10.035 3,Simpson index of 0.951 6,Shannon-Wiener index of 3.443 6,and the evenness index of 0.807 9.The diversity pattern from maximum to minimum was ordered by shrub layer,tree layer,herb layer and liana layer.Comparison of species index and diversity index among four communities (tree layer) of neighboring regions showed that the species diversity of Glycosmis parviflora + Aleurites montana + Castanopsisfissa community was higher than that of the Syzygium odoratum community in Shenzhen and the Trema tomentosa community of Dahao Mountain in Foshan,but was lower than that of Plant Community of Hac Sa Reservior in Macau.Conclusion] The research can provide reference for protecing local plants and constructing shelter forest.