文献类型：期刊文献

中文题名：凤阳山常绿阔叶林中2种杜鹃种群结构与动态变化

英文题名：Structure and Dynamic Characteristics of Two Rhododendron Populations in Evergreen Broad-leaved Forest in Fengyangshan Mountain

作者：季新良[1] 周红敏[2] 彭辉[3] 张弓乔[4]

第一作者：季新良

机构：[1]钱江源-百山祖国家公园管理局,浙江·丽水323000;[2]龙泉市林业科学研究院;[3]钱江源-百山祖国家公园龙泉保护中心;[4]中国林业科学研究院林业所

年份：2022

卷号：50

期号：10

起止页码：27-31

中文期刊名：东北林业大学学报

外文期刊名：Journal of Northeast Forestry University

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：浙江省与中国林业科学研究院省院合作林业科技项目(2020SY04);国家自然科学基金项目(31370638)。

语种：中文

中文关键词：常绿阔叶林;鹿角杜鹃;马银花;种群结构

外文关键词：Evergreen broad-leaved forest;Rhododendron latoucheae;Rhododendron ovatum;Population structure

分类号：S725.2;S718.54

摘要：2018年,在凤阳山-百山祖国家级自然保护区设置80 m×100 m常绿阔叶林固定监测样地(海拔1300 m,坡度20°),在监测样地内设置320个5 m×5 m的小样方;以常绿阔叶林中的鹿角杜鹃(Rhododendron latoucheae)种群、马银花(Rhododendron ovatum)种群为研究对象,对小样方中2个杜鹃种群胸径≥1 cm的个体进行逐一调查;以径级结构代替年龄结构,以种群结构特征、静态生命表、存活曲线分析、种群动态指数、生存函数分析、时间序列模型预测为评价指标,分析2个杜鹃种群的更新特征、维持机制、种群生态学过程及种群发展动态。结果表明:鹿角杜鹃种群、马银花种群均属于增长型种群,龄级结构呈“倒J形”分布,幼龄个体充足,成年个体相对较少;2个杜鹃种群存活曲线,均属于迪维(Deevey)Ⅱ型;时间序列研究表明,2个杜鹃种群未来个体数量总体呈增长趋势;生存分析表明,2个杜鹃种群生存函数呈单调下降趋势。2个杜鹃种群幼苗幼树在种群中所占比例大,但幼龄个体死亡率较高,所处时期仍较关键和敏感;应进一步加大常绿阔叶林的保护力度,采取科学措施,避免人为干扰,防止种群衰退。
Understanding the natural population structure and dynamic characteristics of Rhododendron latoucheae and R. ovatum populations in evergreen broad-leaved forest in Fengyangshan Mountain. From plot investigation, we analyzed the population structures and dynamics of R. latoucheae and R. ovatum by studying the parameters such as size structure, static life table, survival curves, and time sequence model. The results showed that the 2 populations presented an increasing population type with size structure of ‘inverse-J’ type. There were abundant seedlings and saplings of two populations, the survival curves of R. latoucheae and R. ovatum populations were both Deevey type Ⅱ. Time series prediction indicated that the number of individuals in the two populations will all increase in the future. The survival function analysis showed that the survival rate function of the two populations exhibited the similar trend, which monotonically decreased with increasing age class. In this region, seedling and sapling were abundant in the two populations, yet the mortality rate of saplings was high. Appropriate measures should be adopted to strengthen the protection of individuals and habitats of R. latoucheae and R. ovatum populations to promote the two populations renewal and growth in evergreen broad-leaved forest.