内蒙古中部地区繁殖鸟类多样性调查

2011年5～6月,采用样线法和固定半径样点法对内蒙古中部地区荒漠草原、典型草原及湿地3种生境中的鸟类进行了调查,共记录到繁殖鸟63种,隶属于11目25科,其中留鸟12种,夏候鸟51种。在动物地理区系成分上,古北界鸟类54种(占85.71%);东洋界鸟类9种(占14.29%)。调查结果表明,3种生境的鸟类群落结构在多样性指数上以湿地为最高,其次为荒漠草原,典型草原最低;均匀度指数最高的为荒漠草原,其次为湿地,典型草原最低。

Diversity of Breeding Birds in Middle Inner Mongolia

Breeding bird diversity were surveyed by line transect and fixed-radius point count methods in 3 habitat,arid grassland,typical grassland and wetland in Middle Inner Mongolia from May to June 2011.A total of 63 breeding species belonging to 25 families and 17 orders were recorded.Among them 12 were resident birds and 51 were summer visitors.Considering the avifauna,54 species (85.71%)belong to Palearctic Realm and 9(14.39%) are Oriental Realm.The bird diversity from the most to least richness in the 3 habitat surveyed by Shannon-Wiener index is wetland,arid grassland,and typical grassland.The value of evenness index was highest in arid grassland and lowest in typical grassland.