Study On Land Use/Land Cover Change And Ecological Secuerity In ChangBai Mountain's Area In The China-DPRK's Boundary

Study on Land use and cover chang(eLUCC)and ecological security has become a key item and forefront field of research.There are tow typical regions of Changbai Mountain's area for the study area in this paper,to analysis the LUCC and the level of ecological security.Based on five periods satellite remote sensing data including MSS image in 1977,1993,1996,2007's TM and 1999's ETM images in the first study area.The second study area have four periods including redients MSS image in 1976,TM images in 1992 and 2007.and 2001's ETM.In addition the DEM data and other correlative data were collected as assistant data.Used the method of expert knowledge system classification to classify the remote sensing data.Access to the LUCC data in study area.The quantity and the speed change of LUCC data was analysised by the methods of transfer matrixes of LUCC,the models of land-use degree.Analysised the relative changes in the 20km buffer zone of the tow sides in China-DPRK's boundary in the first study area and the 10km buffer zone of the tow sides in China-DPRK's boundary in the second study area by the relative models of land-use changes.That the general trend of LUCC in the study area can be shown.The differences of LUCC China-DPRK's boundary can be shown.To evaluate the status of ecological security application of ecological risk index model in all study area,and analysis the different status of ecological security of China-DPRK's boundary.The study of LUCC and ecological security in the Changbai Mountain's area of this cross-boundary can provide the necessary basis for cooperating the two countries,and protecting environment in the future,and provide the support to global environmental protection.Based on research and analysis the main conlusions are as follows:1.In general,the forest was reducing,the farmland and industrial construction showed a trend of significant increase,which mainly due to interference from human activities.2.The extent of the changes in DPRK's side is greater than Chinese side.3.The status of ecological security is a safer state in overall study area in every period.But the ecological risk index showed a gradual increase.The status of ecological security is better in the first study area than the second study area.The better in Chinese side than DPRK's side.4.Through the analysis of LUCC's driving forces that the natural factors and social factors are the main factors to affect the regional LUCC.The social factors play a leading role.Although China was exploiting and utilizing the resources,at the same time, to take appropriate measures to protect the ecological environment.But DPRK has exploited and utilized the resources uncontrolly because the economic backwardness,whole have a negative impact on the status of ecological security in overall study area.