Optimization And Analysis Of Green Space Ecosystem In Small Towns Based On GIS

As the core element of small towns ' recyclable and sustainable development,the green town system of small cities and towns occupies the top position in ecological functions,and at the same time satisfies the economic and social functions of people's basic living needs.It is the realization of sustainable development of small cities and towns.The core of urban greenbelt ecosystem can be recycled.The application of remote sensing technology has greatly promoted the development of quantitative analysis methods of the structure of green space systems and the spatial pattern of green space systems.The screening and improvement of most of the existing green space system structures and pattern description indices for green space systems are basically related to remote sensing technology.There are many related parts of the application.Among a large number of green space system indices,the degree of sprawl,dominance,and fractal index are the most common methods for spatial pattern analysis of green space systems.The comprehensive spatial and temporal development of small town green space systems is the all-round scientific judgment basis for the development of small cities and towns and is of crucial importance.It will give guidance of the development of green space ecosystems in future small towns.Studying the temporal and spatial changes of patch in green space system can make full use of the function of small town green space system.The research used RS and GIS technology as support,and Baiyingangan town as the target area for the study.The remote sensing images of Baiyinchagan Town in 2005 and 2015 were analyzed and interpreted to construct the Baiyingangan Greenland.A comprehensive database of temporal and spatial changes in plaque.Using the analysis methods of time substitution and spatial change,starting from the factors of patch evolution of the green space system of small cities and towns,22 research areas were selected to construct a system for the temporal and spatial changes of patches in the Baiyingan Town green space system.The comprehensive calculation,quantification and comparison of the change factors were analyzed to analyze the causes of the changes in the Greenland System of Baiyingan Town,and on this basis,the future optimization plan for the Greenland System in Baiyingangan Town was proposed.1.Establish a comprehensive information database of urban green space patch system in Baiyingangan Town,and obtain interpretation results of remote sensingimages of Baiyingangan Town in 2005 and 2015.The green patch of Baiyingangan Town were divided into five categories.After analyzing the types of green patches that change from / into time,the area of green space system in Baiyingangan Town is increasing,and it is mainly in the form of super-large green patch.2.According to the comparison of the horizontal and vertical coordinates of patch maps of urban green space in the two periods of 2005 and 2015 in Baiyingangan Town,the positive sequence of green patch distribution of the horizontal axis changes in / of concentrated to divergent;The ordinate positive sequence of the block area gradually increased.It shows that the construction of the green space system has changed from /into the purpose of revolving around towns and cities,and has a close connection with the development of towns and cities.It plays a crucial role in improving the ecological environment in the urban construction area.3.The area of green patch in Baiyingangan Town has changed greatly from 2005 to2015,mainly reflected in total area of green patch in urban areas and the temporal and spatial distribution of patches in urban green space.The scientific and rational construction of green space systems in small towns has been strengthened,which can effectively improve the ecological environment of small towns and improve the quality of life of townspeople.It can alleviate the many ecological functions of the town that have been caused by the natural environment for many years,such as windy,less,and dry climate.Secondly,on the basis of ensuring the effective functioning of the urban green space system's ecological functions,it can also meet people's daily life needs in order to achieve the optimal internal and external functions of the urban green space system.