宝华山常绿落叶阔叶混交林下蕨类植物研究

Study on pteridophytes of evergreen and deciduous broad-leaf mixed forest in Baohuashan

通过对宝华山常绿、落叶阔叶混交林下蕨类植物的研究,分析了蕨类植物的物种组成、频度、多度、总优势度,乔木层、灌木层、气候因子对蕨类植物多样性格局的影响。阐明了常绿、落叶阔叶混交林下蕨类植物多样性格局及其影响因素,并构建了蕨类植物开发利用潜能评价体系。调查研究结果显示,该区域有蕨类植物12科20属29种。优势科为鳞毛蕨科、金星蕨科、蹄盖蕨科。蕨类植物的盖度与灌木层盖度呈显著正相关,蕨类植物的多样性与灌木层多样性呈显著负相关。蕨类植物Margalef指数与年平均气温呈显著负相关,Simpson优势度指数与日照量呈极显著正相关,Shannon-Wiener多样性指数与降水量呈显著正相关。

According to the study of pteridophytes of evergreen and deciduous broad-leaf mixed forest in Baohuashan, the composition species of pteridophytes, frequency, abundance, SDR were studied, and the effects of tree layer, shrub layer and climate factors on the diversity patterns of pteridophytes were analyzed. The paper clarified the diversity patterns and influencing factors of pteridophytes of evergreen and deciduous broad-leaved mixed forest, and conducted an evaluation system based on the potential for utilization. The investigation data showed that there were 29 species of 20 genera in 12 families, dominated by Dryopteridaceae, Thelypteridaceae and Athyriaceae. The coverage of pteridophytes was significantly and positively correlated with that of the shrub-layer. The diversity of pteridophytes was significantly and negatively correlated with that of the shrub-layer. Margalef index of pteridophytes was significantly and negatively correlated with that of the average temperature. Simpson index was significantly and positively correlated with that of the daylight length. Shannon-wiener index was significantly and positively correlated with that of the average precipitation.