长白山自然保护区公路致死影响下两栖类动物数量稳定性风险评价

Influence of Roadkill on Amphibian Population Quantity Stability in Changbai Mountain Nature Reserve

为评估长白山国家级自然保护区公路致死对两栖类动物数量稳定性的影响程度,参考国际上已有的指标体系与概念模型,基于两栖类动物生活史、公路基础设施、交通流、栖息地特征,采用实地调查、专家咨询、理论分析等方法提出长白山自然保护区公路致死影响下两栖类动物数量稳定性风险评价指标体系与概念模型,从个体和种群层面对本区8种两栖类动物的数量稳定性进行风险评价。结果显示:个体层面有6种两栖类动物为中风险或高风险,尤以中国林蛙为高风险;种群层面有2种为中风险,分别是吉林爪鲵和黑龙江林蛙,中国林蛙接近中风险。目前长白山自然保护区公路致死对两栖类动物数量稳定性的影响以中低风险为主,随着交通网络的密集化和交通量的增长,这一影响很可能增大。

To evaluate the influence of roadkill on amphibian population quantity stability in Chang-bai Mountain National Nature Reserve,referring to the existing index system and conceptual model provided by foreign scholars,based on the life history of amphibians,highway infrastructures,traffic flow and habitat characteristics,the risk assessment index system and conceptual model of amphibian population roadkill caused by highway traffic in Changbai Mountain Nature Reserve were provided.The risk assessment of eight amphibians species in this area were carried out from the individual and population levels.The results show that:at the individual level,six amphibians species are medium or high risk,especially Rana chensinensis,two species are medium risk at the population level,which are Onychodactylus zhaugyapingi and Rana amurensis,and Rana chensinensis is close to medium risk.At present,the risk of highway traffic on amphibian population quantity stability in Changbai Mountain Reserve is mainly low or middle.With the increase of traffic network density and traffic volume,the risk of amphibian population quantity stability is likely to increase.