陕西红碱淖湿地鸥科鸟类组成及分布的研究

Study on the Distribution and Species Composition of Birds(Laridae)in Hongjiannao Wetland,Shaanxi Province

2005～2009年,采用路线调查法和定点观察法对陕西红碱淖湿地鸥科鸟类组成及其分布进行了调查研究。结果表明:红碱淖分布有鸥科鸟类4属10种,在此繁殖的有5种,其中有全球性濒危鸟类——遗鸥的最大种群在此繁殖。记述了鸥科鸟类最早发现时间段、分布状况及迁徙数量情况,也探明了繁殖种群数量。并从植被类型、水位变化、食物因素、湖心岛生境状况和环境气候等因素分析了红碱淖鸥科鸟类迁徙状况、种群数量变化、繁殖情况等。

From 2005 to 2009,the structure and distribution of gulls were studied in Hongjiannao Wetland using transect and fixed point surveys.The results showed that there were 10 species belonging to 4 genera,of which 5 species are breeding birds.The relict gull,an endangered species,has the largest breeding population in this wetland.The time of first found the gulls,their distribution and number change of migration,population numbers of breeding species were especially recorded.Migration status,population numbers and breeding conditions were analyzed by the factors of vegetation types,variety of water level,food factor,island habitat and climate.