Study Of Birds Diversity Community In Different Staged Wetlands At Anbang River Nature Reserve

Anbang River Provincial Nature Reserve wetland is located in the north of Jixian Contry in Sanjiang Plain hinterland, it is a typical wetland with reed, and it's about 10295 hm2. Due to large reclamation, when it's established, just about 2000hm2 remanid. It was initiamated to return cultimated land to wetland from the time established. Now, about 2000hm2 has complete and become the state forestry administration re-wetland demonstration area The bird community composition research was conducted in Spring and Autumn at Anbang river wetland in 2009 and 2010. According to the different recovered stages,4 samples were selected, these were preliminary recovering wetland, almost recovered wetland, primitive wetland and farmland, and bird community diversity was carried on in it used quadrat method:14507 birds were recorded in Spring and Autumn in the four samples; the birds belonged to 13 Orders,28 Families,73 species. Among of them, Passeriformes were 10 Families,19 species, accounted for 26.03% to the total species, non- Passeriformes were 18 Families,54 species. It was recorded waterbirds 7 Orders,12 Families 43 species, and belonged to non-Passeriformes, accounted for 58.9% to the total recording, make up the main part of water birds community studying. The Shannon-Wiener index numbers, from the big to small, between May to June and August to September are primitive wetland (1.78,1.38), almost recovered wetland (1.73,1.00), recovering wetland (0.63,0.22), and farmland (0.18,0.08). The highest similarity of bird community is primitive wetland and almost recovered wetland (0.71, 0.55). There's big difference about bird's community diversity between the almost recovered wetland and primitive wetland, and the recovering wetland to the almost recovered and primitive wetland.In Spring, there's a high similarity about the bird's community scale (0.66) between the recovering wetland and the almost recovered wetland, but it has a big distance to be recovered to catch the primitive wetland, and a high similarity (0.71,0.55) between the almost recoved wetland and the primitive wetland in seasons. So, it declares an obvious recovery achievement in the almost recovered wetland, and the recovering wetland is following the tendency. However, in the constitude and scale of water birds, the recovering and almost recovered wetlands have a low similarity to the primity wetland, and the recovering wetlands needs more time to to be recovered. Seven habitat factors, except residential area, wasted land and less similarity bushwood, wood land, meadow, water area and marsh land are the main habitat factors to influence the bird' distribute, and decide the birds'habitat area. Birds have a high preference and dependence to them.For the dates analysis, it was obtained that there was certain differences between almost recovered wetland and primitive wetland, the even more bigger differences between recovering wetland to almost recovered wetland and primitive wetland, and it needs to be recovered using more measures. So it reaches the expectant study purpose of bird community investigating in different habitat types, and it suggests the achievement of wetland recovery is remarkable.