Research On Application Of GIS Technology In Status Assessment Of "Ecological Restoration And City Renovation"

In recent years,with the rapid economic development,population growth and urban expansion,the contradiction between the three cities,people and the ecological environment has become increasingly prominent,which has brought great pressure to the operation and development of the city."Ecological restoration,City renovation"(Abbreviated as "Urban double repair")as an effective way to control urban ecological environment and urban debt problems has become a very important role of urban development in the new era.Based on the case of Ji'nan,this paper applies GIS technology to the evaluation of its status.Specifically include three aspects:(1)In view of the current situation of “Urban double repair”,which involves many problems relating to data sources and data volume,we need to build multisource heterogeneous data integration and current situation evaluation database.(2)Discussion on the application of GIS technology in the status assessment of city renovation,the focus is on the application of GIS technology in urban public service facilities classification,evaluation method and evaluation process.An attempt is made to combine the improved potential model with the medical facilities in the space range of downtown Ji'nan as an example,to develop the specific needs of GIS technology in the status assessment of urban mending.(3)Discussion on the application of GIS technology in the status assessment of ecological restoration,GIS technology was used to investigate and evaluate the ecological land use from the spatial scale of Ji'nan,the spatial distribution characteristics of various ecological land use,the statistical results of its stock were obtained,and the current ecological land in the region of Ji'nan was studied with GIS technology.The spatio-temporal evolution trend is to evaluate the ecological land of the study area from the time dimension and the spatial dimension.The urban ecological network is evaluated in space on the urban scale of Ji'nan,combined with the theory of landscape ecology,and the spatial visualization method of GIS technology is studied for ecological source,ecological corridor,ecological node and three.The visual expression of urban ecological network space comprising the people compensates the shortcomings of the traditional qualitative assessment of urban ecology and insufficient visualization in space.The above research contents are of great significance to the scientific development of “Ecological restoration and city renovation”.This paper starts from the practical application of GIS technology in the status assessment of the “urban double repair” in Jinan City.After research,it is concluded that: on the one hand,the application of GIS technology to deal with a large number of current data integration and application problems can improve data processing efficiency and data management convenience;On the other hand,the application of GIS technology can provide spatial analysis and statistical methods for the assessment of urban ecology and urban public service facilities,which has changed the traditional methods that cannot reflect the actual problems in a comprehensive,objective and real way by subjective experience.It can increase the rationality of the status assessment.This paper provides a qualitative and quantitative technical idea for the current assessment of the “urban double repairs”.It also proposes a more scientific analysis method for the evaluation objects in the work,and provides scientific and accurate data support for the next step of planning,which has important practical value.