The correlation between urban flower border plants and flower-visiting insects of Hangzhou in different spatio-temporal scenarios
With the rapid advancement of urbanization,it is of great significance to study the service value of urban green space ecosystem in high-density environment,such as protection function,beautification function and cultural recreation.The sample method was used to investigate the current status of plant species and flower-visiting insect species in urban flower borders in Hangzhou,and the species richness index and diversity index were calculated.The correlation between plants and flower-visiting insects in different spatio-temporal scenarios was analyzed to explain the influence of plant composition on the species and number of flower-visiting insects.The results show that there are 132 species of commonly used plants in Hangzhou's urban flower borders,and they belong to 63 families and 115 genera.Flower-visiting insects are mainly divided into the five categories of flies,bees,butterflies,moths and others.The flower-visiting frequency of bees in each period is higher than that of other flower-visiting insects;the number of flowering plant species and the diversity of flower-visiting insects in flower borders with low impervious surface density are higher than those in medium and high impervious surface density flower borders.The frequency of flower-visiting insects in autumn is higher than that in spring and summer.The impervious surface density in urban areas is an important factor affecting the structure of plant species and the species of flower-visiting insects in flower borders.According to the habitat conditions of urban flower borders,feasible suggestions are put forward for the construction of flower-visiting insect-friendly urban flower border plant configuration,so as to provide a scientific basis for the protection and utilization of urban biodiversity.