The Study Of Green Space Of Tianjin City Based On GIS And RS

With the speeding up of industrialization and urbanization,the urban internal environment pollution poses a serious threat to people living life.Green space,as the "lung" of urban structure,is the main body of the urban environment.However,the city carries the people living,produce,entertainment and so on many functions,gradually reducing the green space area is doomed to cannot meet the city to its demand.Therefore,the scientific and rationality of urban park green space landscape planning directly affect the urban heat island effect process.In this paper,interprets the remote sensing image from 2005 to 2015,inverts the surface temperature of the city,and compares the surface temperature changes of the city in ten years.This paper analyzes the spatial distribution of green space in six districts of city in Tianjin,analyzes its influence on the surrounding thermal environment,and makes quantitative research on the main areas of human life activities and makes comparative analysis.This article considers that increasing the area of green space in the commercial areas and industrial areas which have big traffic.In addition,to build a residential neighborhood,not only do you have to increase the size of green space,but you should value the space distribution.Finally,through casing analysis of ten typical parks,we should increase park area,length and complexity as far as possible,and planning more for 65% of greenfield coverage.As the same time,to increase park humidity and form a climate cycle,increasing the proportion of water area that undivided and irregular and tree area that complex and low agglomeration.In the planning,avoiding the emergence of massive area of hard ground and construction land,grass and nursery,which likes bare soil.In summary,to built urban cold island and alleviate the urban heat island effect,it should strengths the configuration of landscape structure in the park.