Analysis On Land Dynamic Change And Development Trend Of Nanchang City Based On Remote Sensing Image

Land resources is one of the important carrier for biological activities and the necessary natural resources for human development.With the soar of human society,land types also varied.For current social resource saving strategies,the application and variation of land resources attract human's more attention.Land-use/land-cover change is one of the important fields for studying ecological,environment variation in geology and urbanization process as well as a significant content of land resources monitoring.For the rational development and application of land resources in research area,it involves all aspects,including regional environment effective supervision and application,social and economic development,grain security and urban schedule development.At present,remote sensing technology is extensively applied to geographic and national condition general survey,land resources management and other fields.According to the data variation collected from the carious kinds lands in research area,it draws the land application pictures and directly shows various variation situation through multiple-phrase charts comparison.In this paper,Nanchang City was selected as the research area and takes the remote sensing image data from 2007 to 2016 as the data source.The author is based on the ENVI software platform to do data processing,obtain the land classification data of ten times in the study area and produce a ten-phase land use thematic map.Based on the existing ten classification data,land Change Transfer Matrix and Land dynamic calculation model are adopted to display land changes of Nanchang from 2007 to 2016 intuitively.The various types of landscape index and quantitative description of the landscape spatial pattern characteristics and changes are extracted through the Fragstats software.Classified data is dealt with different forecasting model for data processing and forecasting.The results shows land development trends of Nanchang in the next three years.Finally,the statistical data and the principal component analysis are analyzed by Matlab and SPSS software platform.The driving factors influencing various land changes are analyzed,revealing the influence of driving factors and the environmental impact caused by land change is analyzed to provide a theoretical basis for the development of the corresponding land planning policy.