青海湖湿地鸭科鸟类群落结构

2007 ～2010年每年4～10月,采用直接计数法对青海湖周边6种典型生境包括河口湿地、湖泊、淡水沼泽、淡水泉、岩石湖岸、沙滩中的鸭科鸟类群落进行了调查.共记录到鸭科鸟类9属21种,采用频率指数法确定的优势种有斑头雁( Anser indicus)、赤麻鸭(Tadorna ferruginea)、针尾鸭(Anas a...

Anatidae Bird Community in the Qinghai Lake Wetland

Anatidae bird communities in the Qinghai Lake wetland were investigated at six types of habitat including estuarine wetlands, lakes, freshwater marsh, freshwater springs, rock lake bank and beach between April and October from 2007 to 2010. Twenty-one species belonging to nine genera were accumulatively recorded in the study period. The dominant species were Anser indicus, Tadorna ferruginea, Anas acuta,A. crecca, A.penelope, Netta rufina, Aythya fuligula, and A.ferina, and their numbers reached to 92.30% of the total individuals of Anatidae. Analysis on Anatidae community characters were made based on the Shannon-wiener index (H), richness index (D), Pielou index (E), and Simpson index (C). The species diversity of Anatidae community and Pielou was highest in estuarine wetlands and freshwater springs, and lakes and freshwater marsh had the highest species richness, while habitat of rock lake bank and beach had lower species diversity and richness. Changes in vegetation over and food richness resulting from extensive human activities were the main reasons for the significant difference of bird distribution and abundance in the various habitats.