Temporal and Spatial Dynamics of the Land-use Types in the Northwest Yunnan from 1986 to 2015

The land use data of 1986, 1995 and 2005, and 2015’s Landsat OLI data in the Northwest Yunnan region were used to analyze changes in land-use type of the study area in the recent 30 years through dynamics in the land-use types, fractal theory, and landscape pattern indexes. The results showed that the woodland always dominated the study area from 1986 to 2015, whose percentages was more than 64% of total study area, and the urban land was always increasing though its area was less than 1%, the dynamic indexes of other land-use types were mostly increasing, and the changes of urban-land area was fastest; the major area-transformation among land-use types was in woodland, grassland and cropland, the number of transformation reached its maximum in the decade of 2005−2015; The fractal feature of land types for the study area was obvious, the woodland, grassland, urban-land and unutilized-land tended to relative stabilization, while cropland, and water was tended to active. The fragmentation of overall land landscape was increased, and each land-use type was tended to be aggregated.