Study On The Assessment Index System Of The Ecological Functions Of Urban Landscape

With the speeding up of urbanization, the urban area of ecological environment has been changing. The study of assessment on ecological functions of the urban landscape is the important content in the research of ecological city theory research and practice, it has great significance for the exploration of the landscape spatial structure model of ecological city. It may make comments to the planning and construction of ecological city construction, Therefore, the study of assessment on urban landscape ecological functions are essential.First of all, this article analyzes the current situation of the urban landscape functional assessment features. It found that the existing research mainly from the use function of urban landscape to classify the urban landscape. In the research on urban landscape ecological function can be difficult. Not very good from the perspective of ecological functions to reflect some basic elements of urban landscape spatial heterogeneity of urban landscape ecological function and ecological environment effect. Secondly, the basic elements of the urban landscape of buildings, vegetation, roads to environmental effects of urban ecological environment were analyzed and summarized. Combined with the above-mentioned two aspects of content, from the perspective of urban landscape ecological environment function research to divide the urban landscape. In landscape ecology, urban environment, remote sensing and GIS and other interdisciplinary theoretical approach to carry out the research, on the basis of establishing evaluation index system of urban landscape ecological environment function. The establishment of Assessment index system of Ecological Functions of the Urban Landscape. And this paper choose ten urban landscape mosaic evaluated compared in ChengGuanqu of Lanzhou City. Finally, according to conclusion of the evaluation index system evaluation and it went to insufficient analysis and to improve.The main contents include:(1)This paper summarizes and analysis the current research status about the assessment of ecological functions of the urban landscape, the ecological functions for the urban landscape summed difficulties to carry out the function of urban landscape ecology exist, Due to different types of urban landscape, they will cause the basic elements of spatial heterogeneity of urban landscape ecological function are different.(2)The basic elements of the urban ecological environment impact of urban landscape, taking Lanzhou city as an example, to explore the city landscape classification method.(3)Urban thermal environment, water environment, atmospheric environment as the main research direction, through the analysis of the urban landscape showing ecological functions and environmental effects produced, mechanisms and influence factors, exploring and initially constructing assessment index system(4)According to the relevant professional teachers and graduate students questionnaires, filtered to construct indicators, using expert scoring method to determine the index weight.(5)Aiming at ten typical area in Lanzhou city, using the combination of field survey, remote sensing and GIS method for objective evaluation and subjective evaluation method of the questionnaire survey,. Through subjective and objective evaluation of the results of comparative analysis to improve the index system construction.(6)The assessment index system of ecological functions of the urban landscape can be from the perspective of the basic factors of urban landscape, to evaluate the ecological environment of city landscape mosaics, it can provide the basis ideas for ecological city construction.