Land Use Pattern Optimization Based On Ecological Security Patterns

With the rapid development of urbanization,limited land resources and increasing urban development demand are gradually unbalanced,resulting in unreasonable land use development,bringing about land ecological problems such as environmental pollution,ecological degradation,and natural over-exploitation.On the one hand,the state vigorously promotes the strategic deployment of ecological civilization construction,guides the ecological construction of land resources,and puts forward new requirements for the construction of a scientific and rational land use pattern;on the other hand,the existing land use layout is difficult to guarantee the sustainable development of land resources.Research on land use and ecological security,and promote the coordinated development of land use development and ecological protection.Therefore,under the premise of considering ecological security,optimizing land use pattern is of great significance for guiding urban spatial development pattern,defining urban spatial form and guiding urban land use,and is an important way to achieve urban smart development and ensure urban ecological security.This paper uses Ar GIS,Geo SOS-FLUS and other software as the technology platform,combined with land use data,remote sensing image and other data sources,using the minimum cumulative resistance model and GIS spatial analysis tools to consider the importance of ecological sensitivity and ecosystem service functions.Influencing factors,the comprehensive ecological security pattern of Huangshi City was established.On this basis,the FLUS model combining system dynamics and cellular automata was used to set different scenarios development models,and the land use pattern simulation results were compared to the future land use.The layout optimization space configuration makes recommendations.Taking Huangshi City as an example,the research results show that:(1)Through the minimum cumulative resistance(MCR)model,combined with spatial analysis tools such as Arc GIS and Envi,the ecological security pattern of Huangshi City is established based on ecological sensitivity and important ecosystem service functions,considering various influencing factors.The results show that the ecological source area is 777.53km2,accounting for 17.54% of the city.From the space point of view,the ecological source is mainly distributed along the Yangtze River in the east,the lakes and woodlands in the west and the woodland in the central part;the ecological corridor of Huangshi City Mainly distributed along the garden and water areas,the non-ecological land is basically avoided,and the ecological source is effectively connected.The total length of the key corridor is about 1912.77 km.(2)Using the system dynamics and cellular automata mechanism in the FLUS model and analyzing the spatial and temporal evolution of land use in Huangshi City,extracting the driving factors of land use change,setting the FLUS model parameters,and using the 2010 as the base period to simulate the land use pattern in 2015.Through the comparison and analysis of the results,the correct simulation grid number is 106192 and the Kappa coefficient is 92.86%.It can be seen that the FLUS model has a good effect on the land use pattern simulation in Huangshi City.(3)Based on the 2015 land use status data,the FLUS model software is used to simulate and analyze the future development scenarios of Huangshi City in 2030,and a natural baseline scenario and an ecological security scenario model are established.By comparing and analyzing the land use patterns in the two scenarios,the spatial allocation development of each land type has a good adaptability to the development trend of Huangshi City,indicating the reliability of the model results,and then based on this Suggestions for optimization of land use patterns in Huangshi City.