截线法对西藏盘羊种群数量的估计
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ESTIMATION OF POPULATION SIZE OF ARGALI SHEEP IN TIBET BY LINE TRANSECT SAMPLING
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    摘要:

    1987~1990年间,采用截线抽样法对西藏盘羊的种群数量及分布进行了全面调查。结果在1550km样线上遇见99头盘羊。由此资料,以傅立叶级数表达其探测函数,估计出了盘羊在西藏分布区内的平均分布密度为0.0820±0.0097头/km2,即每12km2约有1头,而波动在0.0121~0.3671头/km2之间。并依此确定的10.5万km2的栖息面积计算、西藏盘羊的种群数量为8630±1021头。目前,盘羊群平均数下降为5~6头/群,亟待保护。

    Abstract:

    From 1987 to 1990,the distribution and the population size of argali sheep(Ovis ammon) were investigated in Tibet. 99 sheeps were detected in a line transect sampling of 1550 km.From these data,the density of the sheep was estimated as 0.0820±0.0097 sheeps/km2 and it varied from 0.0121 to 0.3671 sheeps/km2,by using the Fourier Series Model as a detected function.The population size was about 8630±1021 individuals in about 105 302 km2 habitat of Tibet.The flock of the sheep was consisted of 5~6 sheeps.

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朴仁珠.截线法对西藏盘羊种群数量的估计.生态学报,1996,16(3):295~301

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