【摘要】 给出了秦岭地区西藏山溪鲵种群的统计学参数 ,包括年龄锥体、现时生命表、存活曲线 ,并对各年龄的存活及死亡原因作了分析。结果表明 ,当年生幼体及三龄变态期个体死亡率升高 ,这主要与当年生幼体适应急流冲击的能力弱以及三龄变态期个体更换栖息生境有关。径流涵养林的无计划采伐及破坏流溪河道是造成种群数量下降的人为因素。种群保护措施应以保护径流量的稳定为主。更多还原

【Abstract】 Population demographic data of Batrachuperus tibetanus were presented, including age structure and sex ratio, life tables and a survivorship curve. Survival rates and death factors affecting different age stages were also described. Results show that 0-year-tadpole and metamorphosis larva has a relatively high death rate in the Qinling Mountains and that this is related to poor adaptability to torrents in 0-year-stage and habitat selection in 3-year-age stage larvae. An appropriate conservation strategy for the Qinling population of Batrachuperus tibetanus is to stabilize stream flow rates.更多还原