【摘要】 2006年4月~5月,对四川省老君山自然保护区鸡形目鸟类种群的鸣叫雄鸟的密度进行了调查。调查发现了4种鸡形目鸟类:灰胸竹鸡(Bambusicola thoracica)、白腹锦鸡(Chrysolophus amherstiae)、四川山鹧鸪(Arborophila rufipectus)和红腹角雉(Tragopan temminckii)。采用鸣叫计数的方法,在调查区域的3种生境(原始林、人工林和次生林)中记录了鸣叫雄鸟的数量和距调查点的距离。应用距离取样法对数据的计算估计,4种鸡形目鸟类的鸣叫雄鸟在调查区域的密度(只/km2)分别为20.19±6.07、1.48±0.46、4.24±0.60和11.19±2.97。在原始林、人工林和次生林3种生境的鸡形目鸟类密度,灰胸竹鸡分别为7.19±4.19、26.89±8.92和17.79±9.49;白腹锦鸡密度分别为0.74±0.43、2.92±1.42和1.19±0.58;四川山鹧鸪密度分别为7.94±0.99、1.99±1.63和3.06±0.60;红腹角雉密度分别为17.66±5.98、0和12.58±4.85。鸡形目鸟类群落Shannon-Weiner物种多样性指数和Pielou均匀度指数大小依次均为次生林>人工林>原始林,Simpson优势度指数大小则相反。更多还原

【Abstract】 A call count method was used to survey the pheasants of Laojunshan Nature Reserve,Sichuan Province from April to May 2006.Distances were estimated to calling males from points positioned in three broad habitat types:primary forest,secondary forest,and replanted forest.The Distance data collected from survey points were analyzed using Distance software to produce overall and habitat-specific density estimates.Calling males of four species of pheasant were encountered using the call count method:Chinese Bamboo-partridge Bambusicola thoracica,Lady Amherst’s Pheasant Chrysolophus amherstiae,Sichuan Hill-partridge Arborophila rufipectus,and Temminck’s Tragopan Tragopan temminckii.Overall densities of calling males were estimated to be 20.19 ± 6.07/km2(B.thoracica),1.48 ± 0.46/km2(C.amherstiae),4.24 ± 0.60/km2(A.rufipectus),and 11.19 ± 2.97/km2(T.tragopan).Habitat-specific density estimates were in some cases limited by small sample sizes,although we still present estimates for these galliform species.It appears that the highest densities of calling male B.thoracica(26.89 ± 8.92)and C.amherstiae(2.92 ± 1.42)are found in replanted forest,while the lowest densities of these two species seemed to be in primary forest(7.19 ± 4.19,1.19 ± 0.58).Calling male A.rufipectus was recorded at highest density in primary forest(7.94 ± 0.99),which was significantly different to densities in secondary(3.06 ± 0.60/km2).The estimated density of calling male T.temminckii was significantly higher in primary(17.66 ± 5.98/km2)and secondary forests(12.58 ± 4.85/km2)than in replanted forest,in which no birds were recorded.The diversity,evenness and dominance of the pheasant communities in each habitat type were compared using Shannon-Wiener index,Pielou index and Simpson index.The diversity and evenness of pheasants was highest in secondary forest(H = 1.06,E = 0.77)and lowest in primary forest(H = 0.83,E = 0.60),while the dominance was highest in primary forest(C = 0.53)and lowest in secondary forest(C = 0.43).更多还原