beiwenquan造句

• The death rate of individuals in beiwenquan population is fairly higher initially and stable afterwards , while after 10 years , the death rate has appeared several waves , and then achieved the biggest physiological life span at 13 years with the death rate sharply up
  北温泉种群的死亡率在幼苗时比较高，以后比较稳定，到10龄时开始下降，以后出现几次波动，个体在13龄时达到种群的最大生理寿命，死亡率急剧升高并最终消失。
• 2 , the survival curves of populations of e . chloranthoides in jigong mountain and dongwenquan are diagonal , which indicates that the individuals of each age grade within the two populations possesses the roughly identical death rate and the populations belong to the stable ones , while the survival curve of population in beiwenquan is concave , which shows that the population belongs to the increase one
  2 、种群存活率曲线表明，鸡公山和东温泉的缙云卫矛种群存活率均呈对角线型，说明这两个种群属于稳定型，而北温泉种群的存活率曲线呈凹型，属于增长型种群。