英山吴家山不同海拔杜鹃分布及生长

Distribution and Growth of Rhododendron simsii at Different Altitudes in wujiashan,yingshan county

摘要:

为摸清英山吴家山森林公园杜鹃的分布和生长情况,选择不同海拔设置样方,以杜鹃株数,分枝数,株高、基部盖 度,土壤养分等指标进行了分析 。结果表明:土壤属于酸性到强酸性类型,适宜杜鹃生长;不同海拔高度样方土壤养分没有 显著差异;随着海拔的上升,杜鹃分布密度呈增加的趋势,杜鹃分枝数及基部盖度在最高海拔处显著高于低海拔处,表明本 地杜鹃在高海拔条件下生长得更好 。研究结果对于认识本地杜鹃生长习性、保护特色生物资源具有参考价值。

Abstract:

Five plots at different altitudes in wujiashan Forest park, yingshan county, were selected to investigate the number of Azaleas( Rhododendron simsii ) of each plot, and its distribution density was also calculated. Ten individuals in every plot were randomly selected to investigate the number of every tree》s branches , and the plant height and basal cov- erage were measured. The soil samples of every plot were collected to investigate its nutrient situation . The results showed that the native soil was from acidic to strongly acidic and suitable for the growth of the azaleas . There was no significant difference in soil nutrient content at different altitudes . with the increase of altitude , the distribution density of Azaleas was increasing, and the number of branches and basal coverage at the highest altitude was significantly higher than that at low altitude , which indicated that the Azaleas in this parkgrew better under high altitude conditions . The results have ref- erence value for understanding the growth habits of local azaleas and protecting local biological resources reasonably.