【摘要】 在 198 7～ 1997年的 11年里 ,采用鸟类环志的方法研究了野生朱的存活和死亡状况 ,编制了动态生命表 ;并对其繁殖地、繁殖情况及年龄组的存活数量等做了分析、发现洋县野生朱种群中 ,当年幼鸟死亡率比较高 .增加种群数量的关键是保护当年的幼鸟 .更多还原

【Abstract】 During the eleven years of 1987～1997, an investigation on survival and dying rates of wild Nipponia nippon by marking with rings was carried out. Thus comes out a movable life table,which offers an analysis of the reproducing places,the survival rate of different age stages as well as the reproductive result.The results show 1-year-nestling has a relatively higher dying rate in Yangxian County, Shaanxi province. Hence the Conservation of 1-year-nestling is the most important measurment for enlarging the population.更多还原