Comprehensive Evaluation Of Tree Species In Residential Areas And Research On Plant Configuration Patterns

Residential green space is an important part of urban green space system,which plays an important role in maintaining urban ecological landscape environment.Plant is an important element of residential green space planning and construction,in which grass plants will have a greater impact on the quality of residential green space,and to a certain extent,it has become an indispensable part of urban green space construction.Based on the investigation of tree species and the study of plant configuration mode in residential area of Laizhou City,combined with the existing data and statistical results,the suitable evaluation index is selected to evaluate the tree species in residential area of Laizhou City.According to the evaluation results,the tree species with higher value are selected for appropriate plant configuration,so as to improve the scientificity of tree species selection and plant configuration in residential area of Laizhou City,Building residential landscape with Laizhou regional characteristics.In this survey,18 evenly distributed and representative residential areas in Laizhou City were selected to conduct a comprehensive investigation and Research on the application of arbor plants,shrub plants,woody lianas and bamboo plants.According to the statistics of the survey results,there are great differences in the number and species of tree species planted in each residential area.There are 78 species in the residential area with the most plant species,while there are only 21 species in the residential area with the least plant species.The average use level of plant species is about 50.In the survey,we found that there are more than 110 kinds of growing tree species in residential areas of Laizhou City,but the application of tree species in the process of greening in many residential areas is insufficient.According to the analysis results of field investigation,there are 124 species of arbor,shrub and vine widely used in the green space of representative residential areas in Laizhou City,Shandong Province,which are40 families,80 genera.Among them,there are 73 species belonging to 47 genera and 25 families,among which Punica granatum,Platanus acerifolia,Salix babylonica and Salix matsudana are the most frequently used;Among them,Syringa oblata,Syringa microphylla,Buxus megistophylla,Buxus microphylla,Hibiscus syriacus,forsythia viridissima,Forsythia suspensa,Jasminum nudiflorum,Syringa microphylla,Syringa oblata,Syringa microphylla,Buxus microphylla,Hibiscus syriacus,Forsythia suspensa,Jasminum nudiflorum,etc Ligustrum × Vicaryi,Rosa chinensis and Rosa rugosa had the highest application frequency;There are 5 families,6 genera and 6 species belonging to lianas(woody lianas and lianiform shrubs).Vitis vinifera is the most widely used lianas.In fact,among all the tree species in the sample plot,the plants belonging to Rosaceae have the highest frequency of use and occurrence,with a total of 28 species belonging to 14 genera.Generally speaking,the residential area of Laizhou City presents the problems of uneven distribution of plant resources,disordered plant landscape and over concentration of species.According to the field investigation and the opinions of experts and scholars,the index system is established by analytic hierarchy process.The evaluation indexes include 18 indexes of ornamental,adaptability,safety,economy,ecology,culture and index layer.The comprehensive evaluation of 120 tree species in the residential area of Laizhou City is carried out.According to the evaluation results,there are 39 tree species with comprehensive evaluation grade I,29 tree species with comprehensive evaluation grade II,31 tree species with comprehensive evaluation grade III,13 tree species with comprehensive evaluation grade IV and 8 tree species with comprehensive evaluation grade V.According to the evaluation results,combined with field research,on the basis of following the basic principles of plant configuration,this paper puts forward reasonable solutions for the plant configuration of residential green space in Laizhou City.According to different types of residential green space,different optimization strategies are put forward,such as "implied" plant configuration mode“ "Smell type" plant configuration mode“ "Decorative" plant configuration mode;For the purpose of ecological landscape and four seasons and seasons,different plant configuration modes with the theme of "spring","summer","autumn" and "winter" were put forward;For the main purpose of ecological protection,the ecological plant configuration mode of dust retention and noise reduction,cooling and humidification was put forward.It can provide reference for the design and construction of different residential environment.