Analysis of landscape pattern of the urban green space in Beijing based on satellite image

According to the 3S techniques and the principles of landscape ecology,the landscape pattern of the urban green space in Beijing was analyzed in this paper from the landscape fragmentation index,landscape isolation index,Shannon diversity index and landscape fractal dimension index.It was concluded that there were 18 730 patches of the urban green space with an area of 12 934.4054 hm2.The Shannon diversity index is 1.03.The landscape fragmentation indexes of the residential,street and park green space were 332.32,69.34 and 1.75 patch·km-2,respectively,while the landscape isolation indexes were 0.72,1.90 and 7.32,respectively,the landscape fractal dimension indexes were 1.58,1.49 and 1.22,respectively.Also,the Shannon diversity index of the residential space of inner and outer loops was 0.54,the landscape fragmentation indexes were 450.39 and 296.20 patch·km-2,respectively,and the landscape isolation indexes were 0.90 and 2.00,respectively.The distribution of the landscape was not reasonable and the landscape diversity index was low.