天津北大港湿地鸭科鸟类调查

Surveys of Anatidae Birds in Tianjin Beidagang Wetland

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。旅乌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（Arias strepera）、绿翅鸭（Anas crecca）、绿头鸭（Anas platyrhynchos）、斑嘴鸭（Arias poecilorhyncha）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。

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 Palaearetic 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.