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广东惠东白盆珠省级自然保护区地处粤东山区,苏铁蕨(Brainea insignis)是保护区内主要的国家级保护植物之一。应用样方调查法,分析该保护区内苏铁蕨种群所在群落的结构特点。在面积为1200 m2的样方中,共记录了维管植物89种,隶属于47科71属,以热带和亚热带分布型为优势;林冠层以鼠刺、大头茶和阿丁枫等为优势种。土壤有机质含量和氮素含量较为丰富,但磷素贫乏;在高郁闭度林冠下生长的苏铁蕨种群生活力较弱。基于研究结果,探讨了白盆珠自然保护区苏铁蕨种群发展的限制因素,提出了促进该区苏铁蕨资源可持续发展的保护建议。
Guangdong Huidong Baipenzhu Provincial Nature Reserve is located in the mountainous area of eastern Guangdong. Brainea insignis is one of the major national protected plants in the reserve. The quadrat investigation method was used to analyze the structural characteristics of the population of Spartina alterniflora in this reserve. A total of 89 vascular plants belonging to 47 families and 71 genera were recorded in the plots of 1200 m2. The tropical and subtropical distributions were dominant. The forest canopy was dominated by the mouse thorn, Species. Soil organic matter content and nitrogen content were relatively abundant, but phosphorus was poor; the viability of the Cycas ferruginum population grown under the canopy of high canopy density was weaker. Based on the results of the study, the limiting factors of the population development of the cycad fern in the Baipenzhu Nature Reserve were discussed, and suggestions for the sustainable development of the Cycad fern resources in this area were put forward.