Study On The Cooling Effect And Main Influencing Factors Of Urban Green Space In Taiyuan City

Rapid urbanization has changed the thermal environment in the city,which threatens the survival of mankind.Solving the problem of thermal environment in the city has become an important task for environmental workers.Studies have shown that green space can reduce the temperature,the researchers from different scales to study the relationship between green space and temperature.For landscape architects,how to plan urban green spaces and parks to reduce the city temperature is the key.In order to solve these problems,this paper uses the remote sensing image of Taiyuan city to extract the green information,inverts the surface temperature,and simulates the temperature change in the park with Envi-met software.The relationship between the green space and its internal temperature is studied from the city scale and the park scale.The main influence factors,the average plaque area,the area weighted average shape index,the average patch adjacent index are the main controlling factors in the green space planning.The area of the park,the water component and the vegetation component are the main control factors in the park design The The results are as follows:(1)It is found that the average patch area,the area weighted average shape index and the average adjacent distance of patches are the main factors in the design of green space based on temperature planning.The average plaque area between 0.5-1.5hm2,the temperature will drop.When the area weighted average shape index is 4.6,the temperature has a minimum,greater or less than this value,and the temperature rises.When the average distance is 62 m,the temperature has a maximum value,and when the distance is less than or greater than this value,the temperature will drop.(2)the study found that the area,water components,vegetation components is the main factor affecting the internal temperature.When the hard component is 30%,20 hectares of park is higher than the temperature in 10 hectares and 5 hectares of park a day.5 hectares and 10 hectares of area of the park,vegetation below 50%,the temperature changes in the same day,when more than 50%,5 hectares park internal temperature but higher than 10 hectares.When the hard proportion is 30%,the temperature inside the 20 hectares of the park increases with the increase of vegetation,but the magnitude is weak.10 hectares and 5 hectares of the park with the increase in vegetation and the average temperature decreases,but the temperature of the day also with vegetation,water,hard changes and changes.