Diversity Of Bird Community In Dagujiahe River Of Yantai

In order to analyze bird species diversity in Dagujiahe River of Yantai.From October 2016 to June 2018,the community composition of birds were surveyed by sample line and direct counting methods in Dagujiahe River every month.In the annual survey,a total of 5 sample lines were selected and the total length was 10km.In the breeding season,we increased the sampling intensity on the basis of the above five sample lines,and a total of 11 sample lines were selected and the total length was20km.The survey results show that a total of 162 species belonged to 16 orders,43families were recorded in the basin,accounts for 34.39%of the total number of birds recorded in Shandong Province.There are 14 dominant species.Among them,there are23 families and 71 species of passeriformes,respectively,accounting for 53.49 and43.83%of total species and total families in the survey.Charadriformes are the largest proportion of non-passerine birds,there are 4 families and 29 species,respectively,accounting for 9.30%and 17.90%of total species and total families in the survey.Among the families of birds,the Anatidae birds account for the largest proportion,and there are 20 species,accounting for 12.35%of the total number of birds surveyed.From the perspective of residence type,the number of brigade birds was the highest,accounting for 66 species,accounting for 40.74%of the total number of birds in the basin;followed by winter migratory birds,recording 35 species,accounting for 21.60%.From the perspective of life style,mainly songbirds and waders,71 species of songbirds and 48 species of waders accounted for 43.83%and29.63%of the total number of birds in the region.In terms of bird protection,there are12 species of birds listed in the“Key Protected Wildlife of the People's Republic of China”were recorded in the basin.There are 11 species of birds listed in the IUCN Red List of Endangered Species.There are 14 species of birds listed in the"Chinese Vertebrate Red List".The annual dynamic curve of bird species showed three peaks,the highest peak appeared in September,and 69 species of birds were recorded.The lowest peak appeared in December and only 38 species were recorded.The dynamic curve of individual number and the dynamic curve of species number are quite different.There are four peaks in total,and the highest peak appears in December.A total of 1,318 birds are recorded.The lowest peak appeared in August,with only 672individuals recorded.In terms of bird community diversity,the overall spring and winter diversity index was significantly higher than that in summer and autumn.The survey of the breeding season from April to June 2018,a total of 81 species belonged to 14 orders,37 families were recorded in the basin.There are 12 dominant species.Among them,there are 20 families and 37 species of passeriformes,respectively,accounting for 54.05%and 45.68%of total species and total families in the breeding season;Charadriformes are the largest proportion of non-passerine birds,there are 4 families and 11 species,respectively,accounting for 10.81%and 13.58%of total species and total families in the survey.Among the families of birds,the Ardeidae birds account for the largest proportion,and there are 9 species,accounting for 11.11%of the total number of birds surveyed.From the perspective of the resident type,48species of resident birds and summer migratory birds were raised in the area,accounting for 59.26%of the total number of birds surveyed.From the perspective of life style,mainly songbirds and waders,including 37 species of songbirds and 24species of waders,accounted for 45.68%and 29.63%of the total number of birds surveyed,respectively.The monthly dynamic curves of bird species and bird density were all“single peaks”,with peaks appearing in May,61 species were recorded,and bird density was 7.93/hm~2.In terms of bird community diversity,the diversity index was the highest in May,but the difference was not obvious in each month.The research in this paper shows that the Dagujiahe River of Yantai is an important bird life support system,a good habitat and breeding ground for a variety of birds,and has abundant bird resources.We need to improve supervision and protection.