广东罗浮山省级自然保护区紫花红豆群落特征分析

Analysis of the Community Characteristics of Ormosia purpureiflorain Luofushan Provincial Nature Reserve

通过样方调查法,研究罗浮山紫花红豆(Ormosia purpureiflora L. Chen)种群的群落结构特点,分析其种群繁育的限制因素,为紫花红豆的保护和利用提供科学依据。在5个20 m×20 m的样方中,共记录有维管植物96种,隶属于46科80属。茜草科种类最丰富,世界广布分布类型占优势。乔木层共记录紫花红豆苗木DBH≥1.0 cm有171株,DBH<1.0 cm有1 297株。乔木层中,紫花红豆的重要值为3.60,排第7;灌木层中,紫花红豆的重要值为13.98,排第1。紫花红豆在乔木层与其他植物争夺光照中处于劣势,在灌木层的优势度相对明显。

The community structure characteristics of Ormosia purpureiflora L.Chen population in Luofu Mountain were studied by the method of quadrat survey,and the limiting factors of its population breeding were analyzed to provide scientific basis for the protection and utilization of Ormosia purpureiflora L.Chen.The results show that:a total of 96 vascular plants belonging to 46 families and 80 genera were recorded in the 5 plots of 20m×20m.There are 171 Ormosia purpureiflora L.Chen plants with DBH≥1.0 cm in the tree layer and 1297 plants with DBH<1.0 cm in the shrub layer.The important value of Ormosia purpureiflora L.Chen in the tree layer ranked seventh with 3.60,and the important value of Ormosia purpureiflora L.Chen in the shrub layer ranked first with 13.98.The most abundant species is Rubiaceae,which is the most abundant distributed type of Widespread.Based on the results,the limiting factors for the breeding of Ormosia purpureiflora L.Chen populations in Luofu Mountain Reserve were analyzed so as to provide scientific basis for the protection and utilization of Ormosia purpureiflora L.Chen.