陕西红碱淖遗鸥繁殖种群及其栖息地现状的研究

对2001-2008年间红碱淖遗鸥繁殖种群数量动态及其栖息地现状进行了记述。遗鸥繁殖种群数量从2001年的87巢增长到2007年的5036巢,成为目前已知全球范围内最大遗鸥繁殖种群。2008年下降为3875巢。环志观察结果显示,不少于8.6%的遗鸥个体于出生后第3年参与繁殖。2008年红碱淖南北两侧各有4个湖心岛,总面积约80000㎡均有遗鸥繁殖。未来红碱淖湿地仍将是遗鸥重要的繁殖地。

Relict Gull Larus relictus Breeding Population Dynamics and Their Breeding Habitat in Hongjian Nur, Shaanxi Province

This paper presents the results of investigation on breeding population dynamics and breeding habitat of Relict Gull Larus relictus, Hongjian Nur wetland, in the past 8 years. In 2000, the bird was first recorded. In 2007, 5036 nests in total were found, as the largest breeding population in the world, and in 2008, it was reduced to 3785 nests. On 15-20 June 2008, no less than 8.6% bird banding (in 2005) individuals of Relict Gull were observed participating in breeding after its 3 years of hatching. By the end of June, 8 islets with a total area of 80,000 m2, distributed north (4 islets) and south (4 islets) in Hongjian Nur lake were found to be inhabited by Relict Gull. Hongjian Nur wetland will be one of the major breeding habitats of Relict Gull in the future.