Birds' Communities In Saihaiwula Nature Reserve, Inner Mongolia

According to a research of the birds'species and community in Saihanwula Nature Reserve, Inner Mongolia, this thesis presents a latest bird-records of this area, which do good for the recovery and mangement of the wild animals at Nature Reserves. Birds'species and community were studied by line transect in reservoirs, and by sample point method in wetlands and forest zones.1.233 species of birds were recorded in four seasons,2007-2009, which belong to 19 orders,50 families and 120 genera. There were 84 species (36.1%of total birds in Saihanwula) of traveler,75 species (32.2%of total birds in Saihanwula) of Ancient North-type,3 species are protected at the national first level, and 34 species at the second class of the state protection. There are also 9 species in the VU list and 8 species in the NT list of China Species Red List. There are 74 new records of bird-species and 28 species not be recorded in the last 3 years, compared with the previous. In addition, there are 34 species'residence type have changed.2. Survey of the quantity of species concluded that the quantity in spring had the highest number, followed by the number in autumn, summer, and winter. Songbirds are the mainly composed type in all four seasons communities. Wading birds and natatoral birds ware increased significantly in spring and fall, which were no substantial distribution in winter.Surveys were spreaded out at 10 different kinds of habitats (wetlands, reservoirs, valley thicket, pine forest, brich forest, shrub, grassland, sand area, ridges and living environment). Shannon-Wiener Diversity Index and Pielou Evenness Index had been calculated to measure the birds'communities in the ten habitats. According to the x2 tests'results, the diversity index and the species richness showed significant differences and the evenness index were not significantly different in each habitat type. Compositing three-year trend, the three indexes had shown significant differences.