广东省穿山甲种群数量调查与资源蕴藏量

THE POPULATION AND DENSITY OF PANGOLIN IN DAWULING NATURAL RESERVE AND THE NUMBER OF PANGOLIN RESOURCE IN GUANGDONG PROVINCE

20 0 0年 1 2月至 2 0 0 1年 3月 ,利用“洞口记数法”对大雾岭自然保护区穿山甲华南亚种的种群密度与种群数量进行了调查 ,结果表明 :保护区内穿山甲的种群数量为 65 2 7～1 5 6 5 9头 ,平均密度为 1 85～ 4 43ind /km2 ;不同栖息生境穿山甲的种群平均密度为 2 46～ 5 90ind /km2 ,密度大小依次为针阔混交林 >阔叶林 >灌木林 >针叶林。各栖息生境的洞口密度平均为 5 1 39± 1 8 31个 /km2 ,以针阔混交林的洞口密度最大 ,其次是阔叶林和灌木林 ,最小的是针叶林 ,且洞口密度大小存在极显著差异 (F =1 6 96>F0 0 1 ,3/30 =4 5 1>F0 0 1 ,3/36)。根据保护区内穿山甲的密度值 ,估计广东全省穿山甲的资源量为 1 42 73 0 9± 5 863 79头。

A survey was conducted between December 2000 and March 2001 on the population and density of Chinese pangolin( Manis pentadactyla aurita ) in Dawuling Natural Reserve,Maoming,Guangdong Province,China. The results showed a population of 65 27-156 59 individuals with the average density of 1 85-4 43 ind /km 2 in this Reserve.The average pangolin density ranged 2 46-5 90 ind /km 2 in different habitats in the following order: mixed coniferous and broadleaf forest (9 00-15 08 ind /km 2 ) >evergreen broadleaf forest (3 48-7 36 ind./km 2 )>shrub (1 78-5 46 ind./km 2 )>coniferous forest (0 10-2 32 ind /km 2 ). The mean density of burrows in different habitats was 51 39 burrows/km 2 with the identical order as the pangolin density: mixed coniferous and broadleaf forest (111 11 burrows/km 2 )> evergreen broadleaf forest(50 00 burrows/km 2 )> shrub(33 34burrows/km 2 ),coniferous forest(11 11burrows/km 2 ).The difference in pangolin burrow density among habitats was highly significant at P <0 01. According to the density of pangolin population in Dawuling Natural Reserve, it was estimated that a population of 14 273 09±5 863 79 individualsin Guangdong Province.