竹子开花后大熊猫的觅食行为与容纳量

1983年卧龙自然保护区大熊猫喜食的冷箭竹大面积开花枯死,受灾面积占82.2%。开花后大熊猫的觅食行为初是由喜食冷箭竹老笋改为竹秆,2年后下移采食未开花的拐棍竹。受灾初期大熊猫种群数量接近容纳量,1978年以后由于拐棍竹增生,其数量约低于容纳量.本文阐明了区域性的容纳量和如何挽救它们,为保护管理提供了理论依据。

THE BEHAVIOUR AND CARRYING CAPACITY OF THE GIANT PANDA DURING THE BAMBOO DYIG PERIOD

The preferred food,Bashania fangiana bamboo,of the giant panda mass-flowered and died in 1988 in Wolong Natural Reserve Sichuan,China.The standing food area dropped by 82.2%. pandas changed their feeding behaviour after the bamboo dying- off,having to eat older culms instead of old shoots.Two years after the dying-off they began to eat a lower elevation bamboo Fargesia robusta.The panda population was above the carrying capacity in the early bamboo dyiny-off period,but high shoot production and decreased numbers of pandas put it below the carrying capacity by 1987,The paper expounds the local carrying capacities and how to take measures to rescue the pandas when,the bamboo dying-off happens.