山西庞泉沟自然保护区褐马鸡种群数量特征的研究

ON THE POPULATION OF THE BROWN EARED-PHEASANT AT PANGQUANGOU NATIONAL NATURE SANCTUARY,SHANXI PROVINCE,CHINA

本文作者于1982—1988年在山西庞泉沟国家级自然保护区对褐马鸡(Crossoptilon mantchuri-cum)的种群数量进行了调查。结果种群密度为0.077(只/公顷),A、B、C垂直带间的数量分别为0.091、0.093、0.048,各占种群数量的39.22％、40.09％和20.69％,D带经调查,尚未见有分布。在繁殖前的5月为种群数量最低基数(0.030只);繁殖后的7月数量最高(0.099只)。

During 1982 to 1988, authors made the census work on the population of the Brown Eared Pheasant (Crossoptilon mantchuricum) in Pangquangou National Nature Sanctuary, Shanxi Province.The results show that the theoretical data of population density of the bird is 0.077 individual per ha. in this area. For numerical vertical distribution, the encounter rate of the Brown Eared Pheasants is 0.048 per ha. in the mid-high mountain range, 0.093 in the raid-montane range and 0.091 in the low-mid-montane range As to seasonal numerical fluctuation, the lowest population cardinal numbers is May (0.930) in prebreeding period and the highest is July (0.099) after breeding period. The population numbers fluctuation by year is displayed in table 3 (take 1982 as the cardinal number), it is increased in four years and declined in two years.