紫花红豆野外资源现状和种群空间分布格局分析

Wild Resources of Ormosia purpureiflora and Its Spatial Distribution Pattern

摘要:

通过野外种质资源调查，对重点保护野生植物紫花红豆(Ormosia purpureiflora)的地理分布、野外生境进行了系统研究,并采用方差均值比率等方法分析了其在罗浮山的种群分布格局。结果表明, 紫花红豆目前在广东罗浮山省级自然保护区和广东龙门南昆山省级自然保护区内零星分布，范围非常狭窄。调查的2个保护区内的紫花红豆共2144株，90%以上的植株为灌木类型，冠幅小；其余为小乔木状。紫花红豆多长于花岗岩地貌的山坡中部，喜温暖湿润；群体内个体呈明显的聚集分布。该研究基本掌握了紫花红豆的野外资源状况和种群空间分布格局特征，为其种质资源的保护与利用提供科学依据。

Abstract:

The geographical distribution and habitat of the key protected wild plant Ormosia purpureiflora were systematically studied by means of field germplasm resource investigation, and its population distribution pattern in Luofu Mountain was analyzed by using variance ratio. The results showed that O. purpureiflora was currently sporadically distributed in Luofu Mountain Provincial Nature Reserve in Guangdong and Nankunshan Provincial Nature Reserve in Longmen, Guangdong, with a very narrow range. A total of 2 144 individuals were surveyed in the two protected areas. More than 90% of the plants were shrubs with small crown width; and the rest were small arborescent. Ormosia purpureiflora grows in the middle of granite slopes and prefer warmth and humidity. The individuals in the population showed obvious aggregation distribution. This study has basically grasped the wild resource status and population spatial distribution pattern characteristics of O. purpureiflora, providing scientific basis for the protection and utilization of their germplasm resources.