广东潮州凤凰山次生林物种多样性及群落优势种的研究

应用样方调查法,研究分析了广东潮安凤凰山省级自然保护区内2片保护状态较好的次生林群落的植物组成和物种多样性特点.在两个面积为1200 m2的调查样方内,共记录了112种维管植物,隶属于48科77属.次生林优势科为茜草科、山茶科和樟科.乔木层优势种为阿丁枫(Altingia chinensis)、尖叶假蚊母树(Disty...

Floristic diversity and dominant species of the secondary forest on Fenghuangshan, Chaozhou, Guangdong

The composition and floristic diversity of the vascular plants of the well-protected secondary forest on Fenghuangshan were investigated by plot method. A total of 112 vascular plants were recorded in the 2 plots of 1200m2, which belong to 48 families and 77 genera. The dominant families are Rubiaceae, Theaceae, and Lauraceae. The dominant species of the canopy layers are Altingia chinensis, Distyliopsis dunnii, Schima superba, Lithocarpus hancei, and Itea chinensis. The dominant species of the shrub layers are Schizostachyum dumetorum, Distyliopsis dunnii, and Schima superba. The dominant species of the herbal layers are Dicranopteris pedata, Gahnia tristis, and Miscanthus sinensis. The tree densities and basal areas varied with the plots. The Stand II is more mature with higher tree height and diameter at the breast height. The species richness, diversity, and evenness of the canopy layer are higher in the stand I. While those of the shrub layer in the stand II are higher. Both stands are low diversity in the herbal layers. By comparison with large area of man-made plantations, the floristic diversity of the secondary forests on Fenghuangshan is higher. It is necessary to enhance the protection of the relic secondary forests and enhance the rehabilitation and development of the regional ecological resources.