Study On The Evolution Of Land Use Landscape Pattern In Fengjie County Based On RS And GIS

Land use research is at the heart of urban planning.The study of the evolution of landscape pattern is also one of the hot spots in urban planning research.Using the remote sensing image data to analyze the landscape pattern of the study area and its driving force factor,we can understand the law of land use pattern change in the study area.At the same time,CA-Markov model is used to simulate the landscape pattern to understand the future trend of land use pattern,and to provide the basis for regional urban planning.In this paper,we use the method of RS and GIS to interpret the four remote sensing images of Fengjie County in 2003,2007,2011 and 2016,and obtain the basic data source.Then the evolution rule of land use pattern is analyzed,and the principal component analysis is used to reveal the driving force factors that affect the landscape pattern of Fengjie county.Finally,the CA-Markov mathematical model is established to simulate the pattern of land use in Fengjie county in 2020,so as to predict the future development direction of Fengjie county.The main research results are as follows:(1)Using the computer supervised classification to obtain the distribution pattern of remote sensing image of Fengjie county in 2003,2007,2011 and 2016,analysis the change of land use and The evolution of spatial pattern in Fengjie county by ENVI and ArcGIS software.(2)Based on the theory of landscape ecology,the Fragstats software was used to select and calculate the landscape pattern index of Fengjie County in four periods.Through the analysis of landscape pattern index,the change pattern of land use landscape pattern of Fengjie county was obtained.(3)The principal component analysis method is used to study the driving factors of land use and landscape pattern evolution in Fengjie county.The results show that the driving force of the landscape pattern of Fengjie County is mainly due to natural factors and social factors.(4)Using the CA-Markov model,the land use landscape pattern of Fengjie County in 2020 was simulated and predicted.According to the simulation forecast,the landscape types of Fengjie County in 2016-2020 were obviously changed,the area of cultivated land and grassland decreased,and the area of forest land and construction land increased,and the water area was basically unchanged.