GIS (geographic information system)-based quantitative evaluation method of visual landscape influence

Abstract

The invention provides a GIS (geographic information system)-based quantitative evaluation method of visual landscape influence and relates to the fields including landscape ecology, the GIS and urban planning. Based on the GIS, the quantitative evaluation is performed; an effective method to reduce the visual landscape influence is provided to solve the technical problem of determining the maximum ecological land area in the urban development. The technical scheme includes 1, establishing a digital terrain model according to basically topographic data, and generating a three-dimensional display image; 2, selecting sensitive landscape viewpoints; 3, analyzing exposure degree of the viewpoints; 4, analyzing visual distances; and 5, analyzing the influenced sensitive points, evaluating section lines among buildings in a site, and providing a layout plan of shield greening. In this way, the visual landscape environmental influence is evaluated in an objective and quantitative manner, and practicability in building and maintenance of the visual landscape sensitive areas including natural protection areas and historical cultural relics and remains is achieved.

Description

technical field [0001] The invention relates to the fields of landscape ecology, geographic information system (GIS), urban planning, etc., and is an effective method for carrying out quantitative evaluation of visual landscape environmental impact by using GIS as the main means, and obtaining corresponding measures for mitigating visual landscape impact. Background technique [0002] The tense relationship between man and land is one of the worldwide problems that mankind is currently facing. With the rapid development of urbanization and economy, the contradiction between man and land has become more prominent. Some projects that may have adverse effects on visual landscape have to be built in visually sensitive areas such as nature reserves, historical and cultural relics, scenic spots, and forest parks. In or nearby, in order to avoid unnecessary losses and irreparable regrets caused by construction projects to natural, historical, cultural and tourism resources, and to ...

AI Technical Summary

Problems solved by technology

[0003] At present, developed countries have carried out a lot of research work on visual landscape evaluation. Compared with foreign countries, my country's visual landscape environmental impact assessment work started relatively late, and the relevant research is mostly concentrated in the fields of urban planning, landscape garden design and road landscape aesthetics. Most of the research content is the exploration of theoretical methods, and the research on spatial quantitative analysis is still lacking; compared with the more mature theoretical and technical methods of environmental impact assessment on water, atmosphere, noise, etc., no complete and quantitative evaluation technical methods have been formed so far.

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