黄龙大熊猫种群数量及年龄结构调查

１９９６年６￣１０月，在野外采用路线－聚类法对黄龙寺自然保护区内大熊猫种群数量进行了调查。结果表明：保护区内现有大熊猫２３只，竹林内生态密度为０．４３９只／ｋｍ＾２。此外，首次采用了离差平方和聚类的方法，将该种群划分为４个年龄组。其中幼年组个体上占１３．３３％，青年组个体占６．６７％，成年组个体占６０％，老年组个体占２０％。最后还对结果进行了讨论。并提出了保护措施。

POPULATION AND AGE STRUCTURE OF GIANT PANDA IN HUANGLONGSI NATURE RESERVE,SICHUAN,CHINA

In 1996,a field survey was conducted to investigate the giant panda population in Huanglongsi Nature Reserve and cluster analysis method was used to analyse its age structure.The results showed that there were 23 pandas in the reserve and the ecological density in bamboo forests was 0 439 giant pandas/km 2.The population could be divided into four age groups with the Sum of Square Method.The cub group accounted for 13 33%,the juvenile group for 6 67%,the adult group for 60%,and the senile group for 20%.This determination was almost in accordance with the principle proposed by Hu (1987),and at the same time it indicated that this population had a stable tendency.However,it was such a small population that a little interrupt could lead it to extinct.Thus,at present it is urgent to protect the habitat and the corridors and ban the mining in the area.