Study on dynamic changes of land use and landscape pattern in Lijiang river basin from 1985 to 2014

This paper analyzes the change trends of land use in Lijing river basin from 1985 to 2014 using three periods of remote sensing data of 1985, 2000 and 2014 and the methods of dynamic degree of land use and the method of land use transfer matrix.The dynamic changes of the landscape pattern are identified by the Fragstats4.2 landscape analysis tool. The results show that the overall change of land use in this region is not large in 1985-2014, mainly exhibiting decreases of woodland, cultivated land and grassland area, and the increase of wetland, urban and rural construction land and unused land area, of which the changes concentrated in 2000-2014. Meanwhile, the degree of fragmentation and complexity increased on a landscape scale, and the degree of aggregation and patch continuity need to be improved. Besides, at the level of type, the fragmentation of woodland landscape increased, and the area of cultivated land and grassland patches increased, and the clustering of wetland, residents and urban and rural construction land was relatively high showing a concentrating distribution.