摘要
依据有尾两栖动物的年繁殖次数、产卵量、栖息地等自然生存特点和分布区域以及地理隔离等生物特征设定10个因子,将每个因子划分4个等级,该因子的等级越低对动物生存影响越小,等级越高对动物生存的影响越大.对中国常见的11种有尾两栖动物10个因子的统计结果表明,其平均值从1.2到1.9不等,73%的物种平均值都大于1.5.说明中国大多数有尾两栖类动物都面临着生存威胁,属于渐危物种.建议通过建立自然保护区等措施加强保护.
Ten factors,including annual reproductive times,clutch size and habitat range,etc.,were used to assess the living status of 11 Chinese urodeles.Each factor was divided into four grades.The values,0,1,2,and 3,were assigned respecitvely to the grades.The values are indicators of magnitude of the grade.The higher the grade is,the bigger the threat of animals is.The average values of the 11 factors were ranged from 1.2 to 1.9.Based on the assessments the average values of 73% species are larger than 1.5,which indicates that most urodele amphibians are in danger in China.Natural reserves should be established to protect these endangered animals as soon as possible.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第2期73-75,82,共4页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家自然科学基金资助项目(30770243)
关键词
两栖纲
有尾目
生存状况
中国
amphibia caudata conservation status China
