%0 Journal Article
%T Age estimation and age structure of Cycas fairylakea population in Shenzhen City<br>仙湖苏铁种群年龄判断及年龄结构特征
%A WANG Dian-pei
%A JI Shu-yi
%A CHEN Fei-peng
%A PENG Shao-lin
%A <br>汪殿蓓
%A 暨淑仪
%A 陈飞鹏
%A 彭少麟
%J 应用生态学报
%D 2007
%I 
%X Based on the structural characteristics of Cycas trunk,including vegetative leaf base scars,sporophyll concave rings,and average occurrence probabilities of vegetative leaf and sporophyll,a method for the age estimation of Cycas fairylakea population was developed,and the age of each individual was calculated.Three approaches,i.e.,age structure diagram,age distribution curve and curve estimation were used to study the age structure of C.fairylakea population at genet and clone population levels.The age structure diagram showed that the clone population of C.fairylakea was stable,but the genet population was in declining.However,both of the clone and genet populations were in declining when using the other two approaches.It was considered that the C.fairylakea population was in declining,and needed an urgent protection.
%K Cycas fairylakea population
%K age estimation
%K age structure
%K age distribution curve
%K curve estimation<br>仙湖苏铁种群
%K 年龄判断
%K 年龄结构
%K 年龄分布曲线
%K 曲线估计
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=3D5A38A8E5988FB3&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=38B194292C032A66&sid=DA4893B5F9885621&eid=03436AC72A659ACA&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=4&reference_num=14