The Study On The Influence Of Urbanization On Different Types Of Green Space Butterflies

In this study,taking the Yanji city as an example,a transect was set along the gradient of urban habitat,along the habitat gradient,from the natural forest green space with less human disturbance to the Jindalai Park green space and cultural palace park green space with the most intense human interference.A total of 4 study sections and 6 habitat types were selected for butterfly sampling survey.Among them,a habitat type of the natural secondary forest of Maoershan in Yanji City's ecological core was selected in section 1;section 2 showed a habitat type of Maoershan natural forest and a transitional area of farming wilderness;section 3 selected the inner city of Burhatong River in the upper reaches of the river Natural habitats and grassland habitats and two types of habitats in the wasteland of Yanji Development Zone;cross-section 4 investigated the two habitat types of the artificial grassland of the Workers Cultural Palace in the built-up urban areas and the artificial secondary forest in the Jindalai Park.The statistical analysis showed that the total numbers of butterflies was 891,belonging to 3 families and 25 species.P.rapae,C.fieldii,and E.argiades were the dominant species in the study area.The butterfly was most suitable for urbanization environment.Among them,cabbage butterfly and blue grey butterfly was common species of four cross-section butterfly communities.The requirements for habitats are relatively loose and the ecological range is relatively wide.The cabbage butterfly and blue grey butterfly are the earliest butterflies to appear every year.The four sections of butterfly community diversity index was:section 1>section 2>section section 3>section 4.Sections 1 and 2 were the first two sections of the butterfly appearing in the year.The diversity index generally appeared in July and August maximum.With the decline of habitat quality,the butterfly community diversity index basically showed a decreasing trend.In addition to the highest diversity index of butterflies,section 1 also had the largest number of species in four sections;Section 4 had the lowest diversity index and no endemic species distribution.The results of the study indicated that the highest diversity index of butterfly species in natural forest greenbelts was the habitat type greenbelt under the protection of urbanization.At the same time,the Jindalai Park Greenland and the Cultural Park Greenland in the city maintained a certain diversity of butterflies and should also be included in the scope of urban habitat protection.The fragmentation of habitats,environmental pollution,and road construction caused by the process of urbanizationhave adversely affected the number and types of butterflies in cities.The key to the protection of urban butterfly diversity lied in the protection and construction of butterfly habitats.According to the requirements of habitats,such as butterfly feeding,visiting flowers,body temperature regulation and field behaviors,the habitat network construction and habitat reconstruction can be targeted.