云南哀牢山国家级自然保护区景东辖区黑长臂猿种群数量和分布

为掌握哀牢山国家级自然保护区景东县辖区黑长臂猿种群数量和分布状况,2005年9～11月采用访问调查法及鸣声定位法对该区域进行了调查。调查结果显示:该区域内20世纪50～80年代,在19个地区曾有黑长臂猿分布,但现在黑长臂猿分布范围已大为减少,目前仅在9个地区发现有9群黑长臂猿。50年代至今至少有13只黑长臂猿被猎杀。狩猎和栖息地破坏是造成该区域黑长臂猿种群数量减少及分布范围缩小的主要原因。

Population and Distribution of Nomascus concolor in Jingdong Jurisdiction of Ailaoshan National Nature Reserve

Ailaoshan National Nature Reserve is one of the main distribution areas that black crested gibbon(Nomascus concolor)lives.It is located in the joint area of six counties,three prefectures in Yunnan Province.It is difficult to carry out a complete field survey on population and distribution of the black crested gibbon in the whole region in Ailaoshan.The survey in Jingdong jurisdiction is of great help for the conservation of black crested gibbon in Ailaoshan Nature Reserve.The field survey was done by use of loud morning songs and interviews with local people from September to November,2005.The result showed that the black crested gibbons distributed in 19 sites in Jingdong jurisdiction between 1950s and 80s,however,the distribution range reduced quite a lot in past 50 years,and only nine groups was found now,At least 13 individuals had been killed since 1950s.The hunting and habitat loss were the main reasons for the population decrease and distribution shrinkage.