| Perennial flower refers to a perennial herb that can survive for two years or more and blooms each year after ripening.It is a flower that can hibernate,and the spring part of the following spring is sprouted again.This kind of flower management is simple and easy to operate and can be used as the first choice for urban greening.It will also play an important role in the future development of the city.The residential area is the basic place for people’s lives,and it is also an important concern for the people to reflect the quality of life.In previous studies,ornamental evaluations and researches on the application of perennial flowers in different cities have been performed.However,there is no precedent for assessing and researching the perennial flowers in the Shenyang and Shenyang residential areas.Based on this,this article takes perennial flower as the main object of study,with its ornamental evaluation as the key research point,and uses this evaluation result to solve the problem of greening in the residential area of Shenyang and proposes optimization suggestions for the purpose of conducting research.First of all,using the method of stratified sampling,the residential areas in Shenyang are divided into nine levels according to the administrative areas.According to the proportion of the number of residential areas in each level,simple random sampling is used for the next residential area extraction.Take 50 residential areas for field research.Next,observe and record the occurrence of perennial flowers in each residential area.By calculating the frequency and frequency,the most commonly used 15 kinds of perennial flowers are obtained.After selecting the commonly used perennial flowers,we selected the factors that affect the ornamental ability of the perennial flowers through the questionnaire.This article selects 14 factors that we are most concerned about.At the same time,please go to 30 experts and scholars for the weight of ornamental factors and the various flowers of the ornamental score.According to the above results to establish a comprehensive evaluation model.Appraisal by using AHP:According to the model,the 15 species of perennial flowers were evaluated comprehensively and divided into three grades according to the actual situation of the comprehensive evaluation value.Grade Ⅰ(4.0-3.5 points)High ornamental value of a total of three kindsGrade Ⅱ(3.5-3.0 points)A total of 10 species of higher ornamental valueGrade Ⅲ(≤3.0 points)There are 2 types of ornamental valueAt the same time,the special rankings of these 15 species of flowers were also obtained for each evaluation factor.Finally,these evaluation indicators and data are comprehensively used to further provide suggestions for the use of perennial flowers to solve the problem of landscaping in residential areas in Shenyang,and provide a reference for the construction of landscaping in residential areas in the future. |
