Investigation On Diversity And Influencing Factors Of Spontaneous Plant In Xiangruhu National Wetland Park

In the urban environment,spontaneous growth of plants not only requires less maintenance and management,but also play a lot of ecological functions.Based on the advantages of spontaneous plants,it is an important idea to integrate the community of spontaneous plants into the planning and design of parks to protect urban nature and enhance urban biodiversity in recent years.As an important part of plants in wetland park,spontaneous plants play an important role in maintaining the stability and sustainable development of wetland ecosystem..However,there are few reports about the diversity ofspontaneous plants in wetland and the driving factors.The result shows:(1)The Xiangruhu National Wetland Park is rich in spontaneous plants.There are 166 species in 60 families and 150 genera.The proportion of native plants is as high as 84%,and the proportion of alien plants accounts for 16%.Among them,13 species are malignant invasive plants.There are 21 species of autistic woody plants in the park,accounting for 12.7% of the total species,and145 species of autistic herbs,accounting for 87.3% of the total species.(2)The order of the number of families,genera,and species of the authigenic plants in each functional area is a reasonable utilization area> mission exhibition area> restoration and reconstruction area> management service area.There are obvious differences in the composition of life forms in different functional areas.The sorts of authigenic woody plants are sorted in order of reasonable utilization area> Educational exhibition area> Restoration and reconstruction area> Management service area.Area.(3)In different functional areas and different habitats,there are significant differences in the diversity of spontaneous plant.Among the four functional areas,the diversity of the native herbs in the mission display area is the highest,and the management service area has the lowest diversity.Among the 6 types of habitats,riparian herbs in riparian beaches have the highest diversity,Lawn diversity is the lowest.(4)10 different planted tree species have significant effects on the diversity of autologous plants.(5)The effects of different environmental factors on the diversity of spontaneous plant are different.Soil fertility and light had a significant positive correlation with the diversity and uniformity of the autogenous plants,and waterhad a significant and significant effect on plant diversity.The structure of planted plants and the richness of planted plants have a small effect on the diversity index of the autophyte,but not significant.To sum up,the Xiangruhu National Wetland Park is rich in spontaneous plants resources,and has a high proportion of native plants.Different functional areas,habitat types and planted trees had significant effects on the species diversity and spatial distribution of spontaneous plants.These results can provide useful reference for the construction of sustainable urban vegetation with low maintenance,high biodiversity and regionalism in the future.