%0 Journal Article
%T 陕西楼观台青檀种群数量动态</br>Quantitative Dynamics of Pteroceltis tatarinowii Population in Louguantai,Shanxi Province
%A 张莉
%A 刘慧君
%A 张小平
%J 上海交通大学学报农业科学版
%D 2017
%X 通过野外调查和数据统计,研究了陕西楼观台青檀的种群年龄结构,编制了种群生命表、绘制了存活曲线、死亡率曲线和消失率曲线及4个生存函数曲线,同时运用谱分析方法,共同揭示青檀的种群动态变化。结果显示青檀种群低龄级个体较多,Ⅰ龄级和Ⅱ龄级的个体占总数的81.7%,属增长型种群,存活曲线趋于Deevey Ⅲ 型,前期死亡率较高,后期稳定;死亡率和消失率变化趋于一致,均在Ⅱ、Ⅲ龄级和ⅩⅣ龄级出现死亡高峰;累计死亡率在Ⅲ龄级达到峰值并趋于稳定,危险率在Ⅱ龄级和ⅩⅣ龄级出现高峰。谱分析表明青檀种群的更新过程中还存在着明显的周期性波动,波动主要发生在Ⅲ龄级、Ⅸ龄级和Ⅺ龄级。</br>Based on investigations and statistics of Pteroceltis tatarinowii population in Louguantai,Shanxi Province,this paper studied the age structure,life table,survival curves,mortality,disappearance rate and 4 survival functions of P.tatarinowii population.Moreover,the dynamics of P.tatarinowii were analyzed by spectral analysis.The results showed that it is an increasing population with more young aged individuals.The young aged individuals account for 81.7% of the total.The survival curve of the population tended to be a type of Deevey Ⅲ,which indicated that it had high mortality rate in the early age and was stable in the late;The pattern of the disappearance rate curve is similar to that of the morality,and both peaks appeared at Ⅱ,Ⅲ and ⅩⅣ age classes.The accumulative morality had the peak at Ⅲ age class.The risk rate curve appeared peaks at Ⅱand ⅩⅣ age classes. The spectral analysis showed that there was a marked periodic fluctuation in the process of regeneration of P.tatarinowii population. It fluctuated at Ⅲ,Ⅸand Ⅺ age classes.
%K 青檀 生命表 存活曲线 生存函数 谱分析&lt
%K /br&gt
%K Pteroceltis tatarinowii life table survival curve survival function spectral analysis
%U http://shjtdxnxb.cnjournals.com/ch/reader/view_abstract.aspx?file_no=20170407&flag=1