天津北大港湿地鸭科鸟类调查

为了解天津北大港湿地的鸭科鸟类种类,2004年11月~2008年3月采用定位观察和线路调查相结合的方法,用计数法和网格计数法取得鸟类种类和数量,并对所得数值采用频率指数估计法,结果为鸭科鸟类8属24种。旅鸟24种,占总种数的100%;冬候鸟4种,占总种数的16.7%;留鸟1种,占总种数的4.2%。古北种13种,占总种数的54.2%;全北型9种,占总种数的37.5%;古北-东洋种2种,占总种数的8.3%。明确豆雁(Anser fabalis)、赤膀鸭(Anas strepera)、绿翅鸭(Anas crecca)、绿头鸭(Anas platyrhynchos)、斑嘴鸭(Anas poe-cilorhyncha)和斑头秋沙鸭(Mergellus albellus)6种为优势种。Shannon-Weiner多样性指数(H′):春季>秋季>冬季>夏季。有国家二级保护鸟类4种。

Surveys of Anatidae Birds in Tianjin Beidagang Wetland

Anatidae birds in Beidagang Wetland was surveyed from November 2004 to March 2008.There were 24 species which belong to 8 genera.There are 24 species(100%) of passing birds,4 species(16.7%) of winter migrants,1 species(4.2%) of residents.There are 13 Palaearctic species(54.2%),9 Holarctic species(37.5%),2 Palaearctic-Oriental species(8.3%).6 species of the Anatidae birds are dominant species,including Anser fabalis,Anas strepera,Anas crecca,Anas platyrhynchos,Anas poecilorhyncha,and Mergellus albellus.The sequence from higher to lower of species richness and species diversity by Shannon-Weiner index(H′)was:Spring>Autumn>Winter>Summer.4 species of the second class of the national protected birds are recorded.