Analysis Of Landscape Pattern Of Rizhao Coastal Zone Based On RS And GIS

The coastal zone is the transition zone between terrace and ocean interaction,lithosphere,hydrosphere,atmosphere and biosphere in this intersection,is one of the most vigorous area in the earth system.Abundant natural resources,obvious geographical advantages,making the coastal zone has become one of the most concentrated areas of human activities.With the coastal city to accelerate the process of human social and economic life is dependent on the extent of the coastal zone increased gradually,increase the development and utilization of the coastal zone,changes of landscape pattern of coastal zone.Landscape pattern is the core content of landscape ecology,the quantitative analysis of landscape pattern is the basis of the study of landscape pattern change,and the key to the study of landscape function and dynamic change.Foreign studies showed that the spatial variation of landscape pattern is mainly the change of landscape patch shape,size and spatial combination,and the landscape pattern index reflects the characteristics of the internal structure of different landscape types and spatial combination relations.Some experts use the landscape pattern index to quantitatively reflect the present situation and change process of landscape pattern.The domestic scholars mainly focus on the selection of landscape pattern index and the dynamic change of landscape pattern.Rizhao City is located in the south-east of Shandong,the city's land area of5310km2,the coastline of 168.5km.With the urbanization of Rizhao City city and the construction area increased,significant changes of landscape pattern in coastal area,the present study focuses on the ecological system of the coastal geological environmental quality and health,the coast zone comprehensive management etc..Based on the analysis of the dynamic change of landscape pattern in Rizhao City coastal zone,the results of this study will provide decision support for the ecological environment protection,integrated coastal zone management and coastal zone development.The remote sensing image RS and GIS technology on 1991,2003,2015 based on the analysis and interpretation,and supervised classification was carried out according to the analysis of measurement results of field investigation and sampling,index,landscape pattern and landscape application of dynamic transfer matrix,grid and landscape gradient method of Rizhao coastal landscape pattern change process.Theresults show that:During the period of 1991-2015,the landscape types of the coastal zone in Rizhao area changed significantly,and the area of cultivated land,forest land and water body decreased year by year.Rizhao coastal zone in the study area,landscape pattern index showed that the landscape diversity index(SHDI)and evenness(SHEI)increased year by year in the study area,landscape richness increased,with evenly distributed trend;landscape aggregation index(AI)and landscape aggregation(CONTAG)gradually decreased,the landscape types tend to be dispersed in space;landscape shape index increased year by year,strengthen to accelerate the rapid development of economy and city urbanization of the disturbance of human activities in the study area.Use of Rizhao coastal research area landscape spatio temporal evolution analysis results show that the matrix,grid and gradient transfer of landscape landscape,reflect the characteristics of landscape pattern changes from three aspects: differences of quantity,speed and structure.The spatial distribution of the landscape pattern change,significant regional differences,mainly concentrated in the surrounding city;cultivated land patch area decreased year by year;building land area increased year by year,residential land increased significantly;forest land and water area decreased slowly.The comprehensive index shows the temporal and spatial evolution characteristics of landscape pattern in Rizhao coastal zone.