Study On Community Dynamic Changes And Conservation Management Of Hasuhai,Daihai,Huangqihai Birds

Based on the field survey records, this paper shows the dynamic changes and causes of the bird community composition of Hasuhai lake、Daihai lake and Hungqihai lake from April2012to March2013, which is compared with2000-2003years of survey data. The results are as follows:Wetland birds of Hasuhai lake, Daihai lake and Huangqihai lake, are recorded135species, belonging to17orders,40families and80genera.A total of114species of birds in Hasuhai lake, which is belonging to16orders,36families and69genera. Among them there are2species belong to first-grade State protection and15species belong to second-grade state protection.The bird species of Daihai lake are91, belonging to14orders,33families and58genera.2species belong to first grade state protection, and7species belong to second-grade state protection.The bird species of Huangqihai lake are60. which ibelong to11orders,24families and39genera. And among them there is1specie belong to first-grade state protection,and7species belong to second-grade state protection.Breeding birds species of three wetland birds are83, accounting for61.48%of the total.The wetland birds in Hasuhai lake, Daihai lake and Huangqihai lake are mostly migratory birds, showing obviously seasonal variations characteristics.In Spring, birds number are the most, because the summer resident and passing migrant birds are moving or passing by in this time, so this is resulted that the April to May becomes the peak time.In summer time most of the passing migrant birds migrated. The summer resident starts to breeding and brood. So the species and the numbers are decreased but become relatively stable. The species and numbers in autumn are more than summer’,but the migration time is not centralize as spring.Winter, due to the cold climate, food shortage and other reasons most birds leaves these wetlands, only a small number of resident stay. Afte the data survey comparison with the date of2000-2003, Hasuhai wetland birds are reduced2orders,3families,12genera,15species;The birds’number of Huangqihai wetland decreased4orders,10families,15genera,12species; but the birds’number of Daihai wetland increased1order,3families,8genera,16species.The number and residence of some species also have some changes. Some of the rare and endangered birds’ number, such as whooper swan, mute swan, black stork, decreased obviously.The change of habitat structure, climate warming and human disturbance, such as the development of tourism projects, land reclamation, deforestation, farming and fishing have influenced on the dynamic change of community of birds.