Research On The Correlation Between Butterfly Diversity And Plant Landscape In Hangzhou Jiangyangfan Ecological Park

With the development of urbanization,urban greenbelt habitats are fragmented and biodiversity is gradually lost.Butterflies are one of the most vulnerable groups to urbanization and an important conservation group in biodiversity research.How to build a butterfly habitat environment through plant landscapes and to protect and attract butterfly species have become an urgent problem to be considered and solved in the construction of urban landscapes.Based on the investigation of plant and butterfly species resources and community diversity in Jiangyangfan Ecological Park in Hangzhou,this thesis studies the influence of plant landscape on butterfly diversity,proposes effective strategies for the construction of butterfly habitats,and provides scientific bases for the configuration of urban greenbelt plant landscape and biodiversity conservation.The survey was conducted from April 2018 to March 2019,using quadrate method and line intercept method to investigate the species,quantity and community structure of plants and butterflies in three habitat types in the park.The effects of plant landscape on butterfly diversity are analyzed by analytic hierarchy process and diversity index.The main results are shown below:First,the plant-butterfly interaction weighting matrix is established by analytic hierarchy process.It shows that plants and butterfly species have a nesting relationship,and specific butterflies have dependence on specific plant species,and vice versa.It is also found that butterflies have different preferences for certain flowers of flowering plants.Second,a total of 121 species belonging to 113 genera and 63 families of plants and 57 species belonging to 41 genera and 8 families of butterflies are recorded.Through research and analysis,in different habitats,the diversity index of plant and butterfly is artificial and secondary forest >wetland > forest,the plant evenness index is artificial and secondary forest > forest > wetland,and the butterfly evenness index is forest > artificial and secondary forest > wetland.The results show that plant habitat types and plant community structure are important factors affecting butterfly diversity.Third,the butterfly related records are collected,and the butterfly resources in the Jiangyangfan area of the three time phases from 1986 to 2019 are compared.It shows that there is no necessary relationship among the habitat,host and honey plant of the butterfly;in spring and summer butterfly,diversity index,evenness index and dominance index are all summer>spring.Comparing and analyzing the relationship between plant phenological changes and the species and distribution of butterfly communities,is shows that changes in plant phenology related to butterfly foraging,such as plant flowering and fruiting,have certain effects on butterfly diversity over time and environmental climate.Fourth,this study proposes the construction strategy of butterfly habitats suitable for urban green space construction in Hangzhou from the aspects of plant species,landscape elements and plant landscape construction,including: application of plant landscape patterns in butterfly habitats;protection mode construction of plant landscape for focus species habita;introduction or restoration of native plant landscape patches;control of threat factor interference.