Study On Landscape Quality Evaluation Of The Western Of Sichuan Linpan Landscape

The unique economic,social and natural conditions of the western Sichuan plain have bred the unique regional rural settlement of the whole country-the western of Sichuan Linpan landscape.With the development of economy and society,new types of Linpan are emerging constantly,while the traditional Linpan are declining rapidly.How to make a correct judgment on the protection and restoration of Linpan at the present stage,and how to improve the quality of Linpan landscape in the following planning,design and management work so as to give full play to the multiple benefits of Linpan landscape are the problems we are facing at present.On the basis of relevant theories,this paper conducts field research to determine the purpose and significance of the study,and explores the landscape quality evaluation of the western of Sichuan Linpan landscape based on landscape resources and landscape benefit.Applying the analytic hierarchy process to construct the evaluation index system.The case study is carried out in Helin Village in Wenjiang District,Quanshui Village in Pidu District and Longhuang Village in Chongzhou City within the scope of Chengdu City.The main conclusions of this paper are as follows:1.The evaluation index system is composed of target level,criterion level(4 indicators)and index level(17 indicators).The target layer is the landscape quality evaluation of the western of Sichuan Linpan landscape.The criterion level factors are ecological benefit,social benefit,economic benefit and aesthetic benefit.The criterion layer factors of ecological benefit include climate comfort of residential environment,cooling and humidifying rate,shading rate and air quality up to standard rate.The social benefit criterion layers include the harmless disposal rate of domestic waste,the coverage rate of household sewage treatment,the popularity rate of household toilets,the accessibility of traffic and the satisfaction degree of residents.The level factors of economic benefit criterion include disposable income per capita,annual growth rate of disposable income of human settlements and tourism potential value.The layers of aesthetic benefit criteria include landscape diversity,landscape authenticity,landscape coordination,landscape cleanliness and landscape culture.2.After calculation,the index weights of criterion level are: ecological benefit(0.349)>social benefit(0.250)>economic benefit(0.213)>aesthetic benefit(0.188).Ecological benefit is very important for the quality of Linpan landscape.The most important indicators corresponding to each criterion level factor are: climate comfort degree of human settlements environment,coverage rate of households in domestic sewage treatment,annual per capita disposable income growth rate and landscape cleanliness.The construction of Linpan with good landscape quality requires a high degree of climate comfort,sound infrastructure,economic growth capacity and landscape cleanliness.3.The results of Linpan landscape quality evaluation in three regions are as follows: Longhuang Village(74.2)> Helin Village(69.9)> Quanshui Village(68.1).The evaluation grade of Linpan landscape quality is "general landscape quality".The ecological and aesthetic benefits of Linpan landscape in Longhuang Village are the best,and the social and economic benefits of Linpan landscape in Helin Village are the best.Helin Village has the strongest comprehensive ability of cooling,humidifying and shading,with a cooling rate of 2.67%,a humidifying rate of 2.41% and a shading rate of 88.97%.Based on the above research results,the strategies of protection and restoration of Linpan in the three regions were put forward respectively,and the principles of integrity,diversity and habitability of protection and restoration of Linpan were put forward.