广西陇瑞白头叶猴种群调查及濒危机制分析

THE SURVEY ON THE WHITE HEADED LANGUR IN LONGREI AND THE ANALYSIS OF THE CAUSE FOR ENDANGERMENT

１９９６年１２月至１９９７年４月，作者在广西宁明县陇瑞保护区对白头叶猴进行了种群调查．结果表明：该地区的白头叶猴平均群大小为９１２只／群，群密度为１８８群／ｋｍ２，种群密度为１７１７只／ｋｍ２，推算该保护区共有白头叶猴３５７只．白头叶猴年龄结构为：成年猴占７９４５％，青年猴占９５９％，幼猴占１０９６％．在此基础上，对照他人对岜盆的工作报道对白叶猴的濒危机制进行了探讨．认为白头叶猴栖息地的生境破坏与隔离是导致其濒危的最主要原因．

From December 1996 to April 1997, a survey on the population of the White headed langur in Longrei Nature Reserves was conducted. The data show that the mean group size in this area is 9.12 Ind/gr, and the population density is 17.17 Ind/km 2. It is estimated that there are 357 individuals in this area. The age composition is as follows:Adult, 79.45%; the young, 9.59% and the infant 10.96%. Based on the data above and the data from other researchers in Bapen in 1993, an analysis on the cause for endangerment of the White headed langur is made.The main factor for endangerment of the White headed langur is the destruction and the isolation of the habitat.