Study On The Diversity Of Autumn Banding Birds And Its Correlation With Climate Factors In Laotie Mountain,dalian

In this research,we take the birds banded in autumn as the object of study from 2012 to2017.We mainly did three parts of research based on the collected and statistical data obtained from the bird banding station.First part,the fauna composition,rare and endangered birds as well as the composition and changes of families,genera and species are analyzed.Second part,Shannon-Wiener diversity index,Pielou evenness index and Simpson dominance index are used as measures to analyze the diversity of the banded birds.Third part,based on the climate data such as temperature,precipitation,relative humidity,wind speed and air pressure in Lvshunkou District of Dalian City obtained from http://data.cma.cn,SPSS19 analysis software is applied to analyze the correlation between the number and species of the banded birds and climate factors.At the same time,to explore whether climatic factors in the year before the bird banding have an impact on it,the correlation analysis is also carried out on the relevant climate factors of the year before the bird banding for reference and comparison.The main results are as follows:(1)A total of 88 species of birds are banded in autumn from 2012 to 2017,bel onging to 45 genera,29 families and 10 orders,and the number of banded birds is 18,522.(2)From 2012 to 2017,in the six years,there are 14 types of the bird fauna,in cluding 30 species of northeast birds,accounting for 34%,and 21 species of Palae-arc tic Realm birds,accounting for 24%.This study also verifies that the zoogeographic d ivision of banded birds in Laotieshan area is mainly the north-east area.(3)A total of 11 species of nationally protected animals are banded.They are F alco amurensis,Falco subbuteo,Buteo buteo,Accioiter gentilis,Accipiter soloensis,Ac cipiter nisus,Accipiter gularis,Ninoxscutulata,Asiootus,Otussunia Oriental,and Otusb akkamoena.They are raptors and in the second class protected animals.(4)The order of diversity index H from large to small is: 2012 > 2016 > 2013> 2015 > 2014 > 2017;The order of dominance index C from large to small is 2017 > 2013 > 2014 > 2015 > 2016 > 2012.The order of evenness index J from large to small is 2016 > 2012 > 2013 > 2015 > 2014 > 2017.(5)The number of daily banded birds is highly significantly correlated with the d aily average temperature,and the correlation coefficient r is-0.325,which is negativel y correlated;There is a significant correlation between the number of daily banded bir ds and the daily average wind speed,and the correlation coefficient r is 0.205,showing a positive correlation.In addition,according to the analysis data,there is no signif icant correlation between the number of daily banded birds and the daily average air pressure,the daily average relative humidity and the 8am-20 pm precipitation,and the correlation is also small.(6)There is no significant correlation between the number of banded birds in Se ptember,October and November and the average relative humidity,average wind spee d and average relative humidity in each month,but the average relative humidity in S eptember and the individual number of banded birds in September,the average relativ e humidity in October and the individual number of bande birds in October are close to the significant correlation,and both are positively correlated and highly correlated,indicating that the average relative humidity in September and October has a certain correlation with the individual number of banded birds in that month,but is not signif icant.(7)Among the climatic factors of annulus,the average precipitation in March w as negatively correlated with the individual number of banded birds,the R value was-0.711,negatively correlated with the species number of bird banded,and the R value was-0.816.Average precipitation in April is negatively correlated with the species n umber of bird banded,r value is-0.909,annual average precipitation is negatively cor related with the individual number of banded birds,r value is-0.736.The mean temp erature in August,summer and winter were negatively correlated with the species num ber of bird banded,with r values of-0.837,-0.868 and-0.887,respectively.The a nnual average precipitation has the greatest and most significant influence on the indiv idual number of banded birds,and the species number of birds banded has the greates t and most significant influence on the average precipitation in April.(8)Among the climatic factors of the year before bird banding,the average pre cipitation in June was positively correlated with the the species number of birds bande d,and the R value was 0.860.The average precipitation in spring was negatively corr elated with the individuals number of birds banded,and the R value was-0.903.The average temperature in July was positively correlated with the number of the species number of bird banded,and the R value was 0.936.The mean temperature in Septe mber was negatively correlated with the species number of bird banded,and the R va lue was-0.972.The mean temperature in summer was negatively correlated with the s pecies number of bird banded and the R value was-0.895.The average temperature i n autumn was positively correlated with the the individuals number of birds banded,a nd the R value was 0.878.The average precipitation in the spring of the previous yea r had the greatest and most significant influence on the individuals number of birds banded in that year,and the average temperature in September of the previous year ha d the greatest and most significant influence on the species number of birds banded.(9)By comparing the results of correlation analysis between the climate factors of the previous year and that of the current year and the individual number and speci es of banded birds in the previous year,it is found that the climate factors of the pre vious year have very significant correlation with the individual number and species of banded birds,while there is no extremely significant correlation factor in the current y ear.This shows that some climate factors in the year before the banding have more s ignificant influence than those of the current year on the individual number and specie s of banded birds.Moreover,the number of species of banded birds is more affecte b y climate factors than the individual number of banded birds.