| Birdstrike also known as bird collision,refers to the aviation accident caused by the collision of birds and man-made aircraft in flight.At present,the International Aviation Federation has upgraded bird strike accidents to "category A" air crashes,and all countries are strengthening research on bird strike prevention.Guilin Liangjiang International Airport,referred to as "Liangjiang Airport",is located in Liangjiang Town,Lingui District,Guilin City,China.It is an important international tourism aviation hub in China and the largest civil aviation hub in Guangxi District.The Guangxi Zhuang Autonomous Region where Liangjiang Airport is located is one of the most biodiverse regions in China and one of the 25 key biodiversity regions in the world.It is rich in bird resources.The city where it is located,Guilin is located in the "Xiangxi Corridor".One of the important routes for the migration of birds from south to north,the airport has a high risk of bird strikes.For this reason,it is particularly important for Liangjiang Airport to do a good job of bird strike prevention.This research survey was conducted from May 2018 to April 2019 on bird communities within 10 km of Liangjiang Airport and surrounding areas.The survey was conducted once a month for a period of one year.And compare the results of this survey with the past(November 2012-October 2013)results.The main methods adopted are:sample line method and sample point method.The sample lines and sample points set at the airport and surrounding areas are surveyed once a month,and a total of 12 field surveys are carried out throughout the year.On the basis of a comprehensive survey,systematically analyze and study the composition of bird communities,monthly dynamic changes,comparison of bird diversity in different habitats and different seasons in two surveys,determine the composition of potential threats to birds,and strike at airports Theprevention work puts forward specific suggestions.These studies are helpful to improve the understanding of the past and current bird activities in the airport,provide basic information and theoretical basis for the airport,explore effective strategies for airport bird strike prevention from theory and practice,and provide relevant information for the airport.It is recommended to improve the bird strike prevention level of the airport from all aspects.(1)The survey from November 2012 to October 2013 recorded a total of 110 species of birds,belonging to 13 orders,39 families,and 75 genera;there are 9 species of mainly passerine birds;the number of resident birds is 59 by residence type Species,22 species of summer migratory birds,17 species of winter migratory birds,12 species of migratory birds;divided by fauna,there are 62 species of Oriental species,34 species of palaeo-northern species,14 species of widely distributed species.The survey from May2018 to April 2019 recorded 126 species of birds,belonging to 14 orders,42 families,and89 genera;the number of passerine birds was the most,with 78 species;divided by residence type,68 Species,21 species of summer migratory birds,27 species of winter migratory birds,10 species of migratory birds;68 species of oriental species,38 species of palaeo-northern species,and 20 species of widely distributed species according to fauna Judging from the results of the two annual surveys,the passerine group is the main group,the resident type is mostly resident birds,and the flora is mainly Oriental species.(2)Judging from the dynamic changes of bird months in different years,the types and numbers of birds in each month of this survey(2018-2019)are basically larger than those in the past(2012-2013),indicating the types and numbers of birds in this airport Both have increased;and the results of the two surveys show an "M"-shaped monthly peak change in bird species and numbers as a whole,and there will be a peak in the number of bird species in April and October each year.(3)A systematic analysis from the diversity of different seasons in different years shows that the parameters of spring and autumn are high,and spring and autumn are the peak periods of bird activity,and the community indexes of spring and autumn are basically higher than In summer and winter,comparing the bird survey parameters between different years and seasons,there is no significant difference between the parameters.(4)The habitats of Liangjiang Airport and surrounding areas are divided into fivehabitats(forest land,shrub forest,farming area,fresh water,residential area).The statistics of bird community diversity index recorded in the five habitats found that: shrubs Forest is the most important bird habitat,and its diversity index has the absolute advantage,while the diversity index of the residential area is the lowest,in order of shrub forest>cultivated area>forest land>freshwater area>residential area.By comparing the parameters of the bird community between the two habitats,there is no significant difference between the parameters,and the similarity is high.(5)Determination of the main bird species that threaten flight in the flight area of??Liangjiang Airport: According to the bird's important(IV)value,combined with whether the bird has a cluster phenomenon,the height of the bird flight,whether it is in the flight area and the encounter rate of each bird And comprehensive factors such as the experience of experts to analyze and determine: 40 types of potentially threatening birds were recorded in 2012-2013,and 40 types of potentially threatening birds were recorded in2018-2019.Judging from the number of potential threatened bird species in the two surveys,the number of potentially threatened bird species has not been reduced due to the adoption of certain measures,but the types of potentially dangerous bird species in2018-2019 are higher than those in 2012.-There was a decrease in 2013,indicating that the degree of threat is declining.(6)Based on the survey results and the current problems and deficiencies in the airport bird strike prevention work,put forward comprehensive prevention suggestions on the use of ecological principles,key treatment measures for each season and habitat,and reform measures for bird repellent equipment,in order to achieve Longer safety cycle.(7)By analyzing the results of the bird survey work of Liangjiang Airport in different years,comparing the two survey results one by one,and discovering the differences and similarities,providing the necessary information for the prevention of bird strikes at the airport,and preventing bird strikes Do the most basic work in order to take corresponding measures to effectively reduce the probability of bird strike accidents at Liangjiang Airport. |
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