唐家河自然保护区扭角羚种群动态及稳定性的初步研究(英文)

PRELIMINARY STUDY ON POPULATION DYNAMICS AND STABILITY OF TAKIN ( BUDORCAS TAXICOLOR TIBETANA ) IN TANGJIAHE RESERVE *

为科学管理和合理利用野生扭角羚资源，通过Ｌｅｓｌｉｅ矩阵方法，预测了唐家河自然保护区扭角羚自１９８６至２００４年间，每隔３年即１９８９，１９９２，１９９５，１９９８，２００１，２００４年各年的理论数量分别是７１５，９６４，１３５８，１８４１，２５６４，３５８４头，提出该保护区扭角羚最适数量应控制在１９９２年的９６４头，最大容纳量不得超过１９９５年的１３５８头．并指出，为了控制种群的快速增长，必需猎杀一部分亚成体及处于生育阶段的雌体．以３岁为年龄距单位，将扭角羚划分为９个等距年龄组，得出扭角羚达到稳定年龄结构时，各年龄组占有的比例分别是０．３１００，０．２１４５，０．１６６３，０．１２８９，０．０７００，０．０５４６，０．０２５７，０．０３０６，０．０００．

Using Leslie matrix, estimated that population number of takin in Tangjiahe Reserve would increase from 715 to 3 584 between 1989 and 2004. It was advisable that the takin's optimal number should be controlled to be 964 and its maximum be limited within 1 358. Age classes were divided into 9 categories at intervals of 3 years. The proportion of individuals in the stable age distribution was calculated as 0.310 0, 0.214 5, 0.166 3, 0.128 9, 0.070 0, 0.054 6, 0.025 7, 0.030 6 and 0.000.