Evaluation Theory And Method Of Highway Landscape In Mountainous Area

In recent years,with the development of economy,the development of highway construction in our country is by leaps and bounds,and the requirements at highway aesthetics and environmental protection to the users are increasing,and landscape in the highway construction has gradually attracted people's attention,especially for the highway in mountainous area,highway landscape in mountainous area can affect the harmony and beauty of the whole highway,so it is necessary to evaluate the landscape of Mountainous Freeway.Through to the domestic and foreign relevant landscape evaluation of literature research,the mountainous expressway landscape evaluation index system and method is developed,and was verified by the example.Landscape evaluation of highway landscape in mountainous areas is a general evaluation of the highway itself and its surrounding environment.This paper by investigating,selecting and extracting the index factor of mountainous expressway landscape evaluated landscape from three aspects: highway landscape type,landscape environment,cultural landscape classes and established highway landscape evaluation system which include ten second level indexes and ninteen third level indicators,and made detailed description to each index factor.Especially the evaluation factors of cultural landscape classes,the integration technology of ArcGIS and ENVI was used to quantify the evaluation factors.A scientific and rational evaluation method is selected,which is based on the improved matter element extension method based on entropy weight,and finally determines the grade of highway landscape evaluation.The introduction of the improved matter element extension evaluation method based on the entropy weight is not only makes up the limitation of the traditional matter element extension evaluation method,but also reduces the human disturbance factor in the entropy weight method.In this paper,Combined with specific examples-qiwan expressway,to say that established the evaluation index system and evaluation method is scientific and feasible.Although the evaluation factors of determination,evaluation system establishment and evaluation method of determine still exist some shortcomings,but it is hope to provide certain reference value for future research on mountainous landscape evaluation through the hilly area expressway landscape evaluation,preliminary study.