Research On Plant Configuration In Residential Areas Of Nanchang City

With the rapid development of China’s economy,people have higher requirements on the quality of living environment.At the 19 th National Congress of the Communist Party of China,general secretary Xi Jinping stressed the importance of ecological civilization while building a beautiful China,and pointed out that " we should treat the ecological environment as we treat life".The construction of ecological civilization should focus on the harmonious coexistence of human and nature and meet people’s needs in material and spiritual life.As the habitat of urban people,residential area’s landscape should match the current level of productivity and economic development.In the past 50 years,especially in the early stage of China’s reform and opening up,the problem of "emphasizing economy over environment" has been highlighted,and the quality of plant landscape in the external living space has also been neglected.The early construction of residential area(the old residential district)in Nanchang city is weak in urban green space system planning and related law.Obviously,there are some phenomena such as insufficient greening rate,unreasonable plant allocation and single plant species,which means that the plant allocation in residential areas has the problems of lack of ecological function and insufficient green space and green quantity.This paper adopts the method of field survey,questionnaire survey,literature analysis and statistical analysis.In this paper,the plant configuration pattern,relative frequency,abundance,significance and importance of plants in old residential areas in nanchang city were investigated.Meanwhile,the plant landscape design of old residential areas in nanchang city was provided with basis.The results are as follows:1.According to the research results of comparing the artificial plant cultivation community patterns of the new and old residential areas,the overall performance of the plant landscape of the new residential areas is better than that of the old residential areas.In terms of tree species,there are 42 species of arbor and shrub plants,28 species of evergreen plants and 16 species of deciduous plants on average in the new residential area.There were 23 species of arbor and shrub plants,17 species of evergreen plants and 8 species of deciduous plants in the old residential area.In terms of configuration mode,the plant configuration of old residential areas lacks landscape,and the use of functional tree species is less in the green space beside houses.Through three types of new and old residential green plant configuration comparative analysis,it can be concluded that the type of “Cinnamomum camphora+Elaeocarpus sylvesfris-Cerasus serrulata + Osmanthus fragrans-Photinia serrulata + Rhododendron pulchrum+Fatsia japonica” configuration mode is suitable for living city ecological environment,or the class of “Ginkgo biloba-Hibiscus syriacus+Prunus cerasifera+Lagerstroemia indica-Camellia japonica + Photinia serrulata + Ligustrum japonicum” can promote the construction of new residential form of plant configuration.2.By comparing the plant community characteristics index of the new and old residential areas,it is concluded that in the central green space,the old residential areas should strengthen the use of ornamental plants,rather than blindly using evergreen tree species;In the green space beside houses,the overall plant selection should give priority to the ecological function of plants;In the road green space,under the premise of comprehensive consideration of plant functionality and ornamental value,the utilization of plants ranking the middle of important value should be strengthened,such as Ligustrum lucidum,Robinia pseudoacacia and other tree species.3.According to the data feedback of residents on various aspects of the plant landscape in the residential area,it is found that most residents in the old town are not satisfied with the greening of the residential area,with male accounting for 54.8% and female for 59.1%.However,the plant landscape of the new town residential area is totally different from that of the old residential area.In terms of plant configuration,those who are satisfied account for 65.2% of the total.In terms of plant diversity satisfaction,60.8% of the residents approved the plant diversity of the community.In terms of landscape satisfaction,residents scored 65.2% in both sections of "7-10" and only 13% in "1-4".4.Compared and analyzed the existing problems of plant configuration in new and old residential areas,and proposed corresponding solutions.(1)increase the proportion of native plants.(2)optimize the plant community model.(3)increase the "green amount" of plants as much as possible.(4)increase the proportion of fragrant flower species.(5)strengthen the technical and economic investment in the maintenance and management of green space in residential areas.5.Suggestions on the transformation of the old residential plant landscape are put forward.Through the comprehensive analysis of functional zoning,traffic analysis,night lighting,plant species and nodes of several large green space types in the residential area,and according to the actual situation,the better plant configuration modes summarized above for central green space,house side green space and road green space are applied to the landscape reconstruction of examples,so that the theoretical knowledge can be applied to the reconstruction suggestions.