武汉桂子山地区冬季鸟类变迁研究

Study on Bird Change during Winter in Guizi Mountain Area of Wuhan

2005年11月至2006年3月，用固定样带法及辅助观察法调查记录了武汉桂子山地区冬季鸟类44种，隶属10目22科，鸟类密度为4．30只·hm^-2，物种多样性指数为2．6477，均匀性指数为0．6997。过去的17a间（1990～2006年），冬季鸟类由61种变为44种，减少了27．87％，其中冬候鸟减少了66．67％，留鸟增加了28．00％；国家Ⅱ级保护鸟类减少了75．00％，湖北省重点保护鸟类增加了14．29％。分析了该地区冬季鸟类的变迁及其原因，并提出了保护建议。

An investigation carried out from November 2005 to Match 2006 concerning birds change in winter recorded that there were 44 species belonging to 10 orders and 22 families, the bird density was 4.30 ind. / hm^2, the species diversity index was 2.6477, evenness index was 0.6997. During the past 17 years （1990-2006）, the bird species in winter had decreased 27.87% from 61 to 44, in which winter migratory bird had decreased 66.6%, but residents had increased 28.00%; state class Ⅱ protected birds had decreased 75.00%, priority protected birds of Hubei province had increased 14.29%. The paper analyzed the change of birds in winter of this area and reasons for it and put forward the suggestions for the protection.