Study On The Optimization Of The Spatial Pattern Of Ecological Land Use In The Beibu Gulf Urban Agglomeration Based On The Goal Of Weakening The Heat Island Effect

With the continuous expansion of cities and the development of large-scale urban agglomerations,the volume of production and living spaces has further expanded;ecological land has also been eroded,and the reduction of ecological land also represents the great destruction of natural vegetation,and the sharp decline and rising of vegetation The impermeability of the ground greatly affects the comfort of the human settlement environment and forms a heat island effect;how to optimize the spatial pattern of ecological land without affecting normal production and life,and improve the safety,cooling and service functions of ecological land more economically Therefore,weakening the heat island effect of urban agglomerations and ensuring the comfort of human settlements have become the issues that need to be studied in this article.From the perspective of optimizing the spatial pattern of ecological land use,the weakening of the heat island effect can theoretically enrich the large-scale research methods of urban agglomerations that weaken the heat island effect,and in practice,it can improve the overall residential comfort of the Beibu Gulf urban agglomeration from the perspective of ecological land optimization design.The degree is improved to provide refined guidance.This paper takes the Beibu Gulf urban agglomeration as the research object,uses LANDSAT and MODIS data to analyze the changes of ecological land and heat island effect in a stage of 5 years,analyzes their changes in the past 19 years and future trends,and summarizes their relevance;The ecological land optimization model is summarized,and a large-scale MCR model optimization method suitable for urban agglomerations is obtained.After the optimization method is determined,the ecological land optimization is constructed using the data of the ecological source and the comprehensive resistance surface with the heat island as the main resistance target.Then,based on the optimized layout of ecological land,with design implementation as the requirement-oriented,the corresponding optimization strategy is proposed for the ecological land data and heat island data,and the actual optimization scheme design is further carried out on the optimized layout.Finally,five types of zones were designed in the plan: cooling green core area,ecological cooling high,medium,and low-efficiency expansion area,and cooling advance area;construct an east-west cooling axis and a north-south cooling axis to connect the main heat island and the overlapping area of ecological land to provide cooling support;And through the coastal repair zone,the urban restriction zone and the traffic restriction zone to provide control and restriction support for the expansion of the heat island,and finally through the multi-corridor and multi-node to connect the major districts,to achieve the point-to-plane,line-cutting heat island spreading area purpose.Finally,quantitative analysis and illustration of the design plan are carried out to provide implementation guidance and support.In general,this research conducted a 19-year data analysis of ecological land and heat island effect,and studied its change trend and correlation.Based on the MCR model,the ecological land optimization model and optimization pattern that weakened the heat island effect were constructed.,And then further refine the optimization pattern from the actual landing requirements of the plan,propose the spatial structure and detailed design zoning plan,and finally provide planning and design support from a qualitative and quantitative perspective.