Studies On The Biodiversity Of Summer Birds Community In Burned Forest Areas In Northern Slope Of Daxing'an Mountains

From May to July 2009, bird communities in burned forest areas and 5 different habitat which include virgin forest, secondary forest, scrub, wetland and residential area were studied by sampling method in north daxing' anling.(1) In the summer bird breeding season of amuer area, the main species of bird are Passeriformes(57), Falconiformes(7), Charadriiformes(6) and Anseriformes(5). The species number of widespread, palaearctic region and oriental region was 27,63 and 1. The palaearctic region birds are predominant.(2) In 5 different habitat, the diversity index in descending order is secondary forest(3.7845),virgin forest(3.3517),scrub(3.2510),residential area(2.7977) and wetland(2.5992).The evenness index of virgin forest is the highest and residential area is the lowest.(3) The number of birds and communities, compare to the comparison sample, declined in 3-5 years burned area, number of communities declined to the lowest in 10 years burned area and the number of birds declined to the lowest in 13 years burned area, numbers in 22-years retune up, number of birds and communities in the most in comparison sample. Sylviidae dominate in 5 and 13 years burned area, Emberiza spodocephala and Carpodacus erythrinus are the predominant species in 22 years burned area, most of predominant species are in the comparison sample, they are Anthus hodgsoni,Loxia leucoptera, Emberiza aureola and Emberiza spodocephala. Order of diversity index of birds communities is comparison area>22 years burned area>13 years burned area>10 years burned area>3 years burned area>5 years burned area, and the uniformity order is 10 years burned area>13 years burned area>comparison area>3 years burned area>5 years burned area. The similarly index for 5 years and 22 years burned area is the highest, and then is the index for 3 years and 5 years burned area, and similarly index for 22 years burned area and comparison area is the lowest. Birds communities are affected by vegetation composition and environment actors in the development process.