The Comparative Analysis Of Land Use Change And Landscape Pattern In China-Vietnam Border

The research of land use / cover change is one of the hotspots of global change research,with the international communication becomes frequent and the frontier friction constantly,on both sides of the border region is becoming the important space of international economic cooperation.Under the joint action of the special geographical and political pattern and economic development model,China and Vietnam border surrounding land use has become the focus of attention.In this thesis,for China and Vietnam border nine county were studied,In 1995,2005 and1995 as data sources,such as remote sensing image based on GPS,RS,GIS technology again,then use ENVI5.1,ArcGIS10.2 software for geometric correction and band synthetic and Mosaic preprocessing,image fusion,and combining with the field survey,GPS point,using artificial visual interpretation and supervised classification methods to classify interpretation.And mathematical statistics such as SPSS23.0,Office software,to geography information map/strength analysis of land use and landscape pattern index analysis as the theoretical basis,through the adoption of the land use degree,land use dynamic degree and land use transfer matrix,the intensity of land use and landscape index such as mathematical model,and for China and the border region nine county land use change and the evolution of the landscape pattern comparison and analysis,more,need to study extraction in China and Vietnam border area 0 ~20 km buffer the transfer of land use change,and then,also need a detailed analysis of border land resources reasonable use,the purpose is to the government for homeland security next using the land use data and reference for the model.The conclusion of this study are:(1)In the border areas of China and Vietnam nine county,the land use types from 1995 to2015 are predominantly agricultural land and unused land is complementary.City of Guangxi province Jingxi,Longzhou county,mainly is the forest land,cultivated land and unused land.However Heguang,Changding and other seven county mainly such as forest land,cultivated land,there are large difference between both.From the speed of change,From the point of changing speed,China and Vietnam border nine county to class the most dramatic change is to use construction land,water.Look from the degree of change,Jingxi,Longzhou county land utilization degree are in a steadily rise trend,the difference is that the river is wide and long on seven county present a slowly decreasing and increasing volatility rising quickly,there are large difference between both the degree of change.(2)From 1995 to 2015,China and Vietnam border nine county,in class is the most frequent shift forest land and unused land and arable land and water.China and Vietnam bordernine county,and the degree of the transfer of land use type of Longzhou county changes from low to high.In short,Heguang,Changding and other seven county degree of land use type transferring more intense.0 to 20 km around the border of Guangxi land is the most frequent change of cultivated land,unused and woodlands,Gaoping county and Liangshan county is an interconversion between construction land and woodland,grasslands and cultivated land and woodland,woodland and cultivated land.However,land use types in China transfer degree is more active in the study area.(3)During the period of 1995 to 2015,China and Vietnam border city of jingxi,longzhou county land use intensity level decreases in an interval,gradual trend is greater than the wide river county,long county,7 counties,such as the ground on the class hierarchy of change magnitude of land use type transferring most is unstable,forest land and construction land are very active during the study period,the shift level except other unused land types is in stable state,characterized by mutual conversion of construction land and forest land and unused land.China and Vietnam border long wide river county,the county county land use intensity in seven interval level gradually reduce,in a class hierarchy on water area,construction land and unused land and grassland showed activity in the entire study period,the shift level forest land conversion is unstable.Two land use intensity differences in the study area,the main reason is that China and Vietnam are two countries of the direction and strength of different land use,land management concept.(4)During the period of 1995 to 2015,China and Vietnam border area of 9 cities and counties in the two countries China and Vietnam land management,land use control,land use planning,etc.The influence of different system and policy,not only reduce degree of landscape fragmentation,landscape dominance index decreased,and landscape shape or boundary shape gradually rules,patches Mosaic.Landscape advantage type connectivity and landscape diversity,evenness change direction are different.Chinese landscape connectivity in the study area is abate,diversity,landscape heterogeneity increased,due to human disturbance intensity increasing,and Vietnam in the study area landscape type reunite degree or delays the trend to further strengthen,landscape type diversity decreases,richness decreased,landscape type to a single development of land use.