A Study On Evaluation Of Landscape Of Riverside Green Space In The Middle Section Of Yitong River In Changchun From The Perspective Of Healthy City

In recent years,with the rapid development of economy and urbanization,many problems of urban environment and public health have been brought about.The deterioration of the living environment directly or indirectly leads to the emergence of chronic diseases and environmental diseases.In the case of increasingly serious health problems,the government and urban designers begin to actively explore the construction of healthy cities,and realized that only by creating good urban public space and guiding the public to form healthy living habits,can the public health situation be improved.Riverside green space represents a unique environmental resource in urban green space as rich natural landscape and comfortable environment and it now stands as one of the most celebrated urban public spaces.Improving the riverside green space landscape plays a certain role in promoting public health,and is an important part of healthy urban construction.Based on the perspective of healthy city,combined with literature review,field research,questionnaire survey,analytic hierarchy process and other methods,this paper takes the riverside green space landscape in the middle section of Yitong River in Changchun City as the evaluation object,carries out comprehensive evaluation and analysis,and puts forward optimization suggestions so as to improve the health benefits of riverside green space landscape.The results are as follows:(1)Combined with the research on healthy city and landscape evaluation at home and abroad,it is found that the practice of healthy city concept lies in mostly streets and communities,but there are few studies on the design of riverside green space,and lack of evaluation of riverside green space landscape from the perspective of healthy city.(2)After compared the advantages and disadvantages of landscape evaluation methods,AHP is used to set down the evaluation index in line with the residents’ health behavior,characteristics,landscape environmental needs and expert opinions.Then they are 5 criteria layers and 16 indicators layers,which are closing to nature space,fitness space,leisure and entertainment space,social communication space and infrastructure purchase.(3)Based on the perspective of healthy city,the evaluation system of riverside green space landscape is established,and the weight values of each index are calculated and compared.The results are as follows: Fitness Space > Closing to nature space > Leisure and entertainment space > Infrastructure configuration > Social communication space.It shows that among the five criteria,experts think that the construction of fitness exercise space is the most important;as for the target layer,the fitness of trail service is the highest and the comfort of space is the lowest,which indicates that experts pay more attention to the fitness of trail service than the comfort of space.(4)According to the weight value,combined with the landscape score questionnaire survey of residents,the number of 75.39 stands to be the total score of riverside green space in the middle section of Yitong River from the perspective of healthy city,and the evaluation level is proved to be ‘secondary’,which indicates that it still derives some problems.Among the index factors,water visibility,riverbank hydrophilicity,plant ornamental,activity diversity,activity attraction,activity participation,space diversity,space comfort and road traffic accessibility were rated as ‘fine’,indicating that the landscape in these aspects was relatively good;the rest are ranked as ‘secondary’,which suggests that there are still many problems to be improved in the riverside green space in the middle of Yitong River from the perspective of healthy city.(5)Combined with the actual investigation of riverside green space in the middle section of Yitong River,this paper analyzes the existing problems,such as unreasonable distribution of fitness facilities,lack of barrier free facilities,etc.,and puts forward the corresponding landscape optimization suggestions: increasing the types of fitness facilities and setting them in open and convenient space,adding suitable activity sites for youth activities,etc.