【摘要】 2003年春季对崇明东滩潮间带不同生境的鸟类群落进行了调查,共记录到鸟类64种,隶属7目15科。崇明东滩潮间带春季鸟类平均密度为14.60只/hm2,鸟类多样性指数2.08、均匀度指数0.49、优势度指数0.22。芦苇带、海三棱草带和盐渍藻类带是东滩潮间带典型的生境,各生境的鸟类种类、密度和多样性差异较大。其中芦苇带25种,平均密度2.56只/hm2;海三棱草带有48种,平均密度15.38只/hm2;盐渍藻类带36种,平均密度21.04只/hm2。3种生境中盐渍藻类带鸟类的生物多样性最高,海三棱草带最低。研究表明,滩涂围垦、人类活动干扰、互花米草的入侵是影响鸟类在东滩栖息的主要因素。更多还原

【Abstract】 During the spring of 2003,we surveyed the different avian communities in 33 sampled sites located in saline alga,Scirpus mariqueter and reed habitats in Chongming Dongtan inter-tidal zone.A total of 64 species,which belong to 7 orders,15 families,were recorded.The average density of birds in intertidal zone was 14.60 ind./hm~2.The Shannon-wiener index(H′) was 2.08,species evenness(J) was 0.49,and C index was 0.22.The species richness,bird density and diversity were significantly different between each habitat.A total of 25,48 and 36 species were recorded in saline alga,S.mariqueter and reed habitats and average density of birds was 2.56 ind./hm~2,15.38 ind./hm~2 and 21.04 ind./hm~2,respectively.The diversity index of the avian community in saline alga was the highest while that in S.mariqueter was the lowest.According to the results,reclamation of tidal flats,human disturbance and invasion of exotic plant(Spartina alterniflora) were primary adverse factors for birds’ inhabitation in Dongtan.更多还原