拉萨市土地利用动态变化

基于拉萨市1995年、2005年与2015年的土地利用情况,探究1995-2015年的土地利用变化情况与土地利用变化的空间格局特征。结果表明:(1)拉萨市以草地与未利用地占主要优势;(2)存在明显的草地与未利用地的相互转换现象;建筑面积变化量不大;大面积的草原转变为耕地;林地与水域面积有所增加;(3)1995-2005年相较于2005-2015年土地利用变化方向性更为明显;2005-2015年变化范围更广,变化中心位于林周县中西部,沿西北——东南方向缩小。

Based on the land use situation of Lhasa in 1995,2005 and 2015,explore the land use change situation and the spatial pattern characteristics of land use change from 1995 to 2015.The results show that:(1)Lhasa is dominated by grassland and unused land;(2)There is an obvious mutual conversion phenomenon between grassland and unused land;the amount of change in building area is not large;large areas of grassland are converted into cultivated land;The water area has been increase;(3)The direction of land use change from 1995 to 2005 is more obvious than that from 2005 to 2015;the range of change from 2005 to 2015 is wider,with the center of change located in the central and western part of Linzhou,zoom out along the northwest-southeast direction.