黎蒴栲林等3个乡土阔叶树种群落的多样性及稳定性

在汕头市中小水库库区范围内的水源涵养林中,选择黎蒴栲林、鸭脚木林、山杜英林3个乡土阔叶树种群落,对群落物种多样性、自然更新情况、群落稳定性进行测定分析,结果表明:3个群落的乔木树种多样性表现为山杜英林＞鸭脚木林＞黎蒴栲林,而黎蒴栲林和山杜英林的相对稳定性较高,其物种多样性和稳定性没有出现明显的正相关.3个群落的多样性、稳定性受制于各自建群种的生物学特性及特定的生境条件,并与人为的干扰强度有关.

Diversity and Stability of the Communities of Certain Three Indigenous Broadleaved Species

Three indigenous latifoliate species namely Castanopsis fissa,Elaeocarpus sylvestris and Schefflera octophylla were selected from the forest for the purpose of water conservation in the scope of midst and small reservoirs in Shantou to determine the species diversity,natural regeneration and stability of communities.The results showed that the diversity of arbor species of these three communities was listed as Elaeocarpus sylvestris>Schefflera octophylla>Castanopsis fissa;the stability of Castanopsis fissa and Elaeocarpus sylvestris was relatively higher;the species diversity wasn't directly interrelated to the stability.Diversity and stability of three communities were impacted by their biological characteristics and habitat conditions respectively,and it is relevant to the intensity of artificial disturbance.