湘西洛塔地区土地利用变化研究

Research on Land Use Change in Luota Area of Western Hunan

利用遥感解析数据,依据土地利用动态变化模型和土地利用空间格局的变化分析,研究了湘西洛塔地区不同时期土地利用的变化。结果表明:该地区林地面积和水域面积比重偏小,灌木面积和草地面积比重偏大;在土地利用变化速度方面,密灌、裸土草地、灌丛处于增长阶段,灌丛草地处于下降阶段,其余的变化不明显,综合土地利用动态度呈下降的趋势;在土地利用变化程度方面,土地利用整体呈衰退的趋势;在土地利用空间格局方面,多样性和均匀度整体呈增加的趋势,优势度呈下降的趋势。

Using the remote sensing data and according to the model of land use dynamic change and analysis of land use spatial pattern, this paper studied the process of land-use changes in Luota area of western Hunan province in different periods. Tne results showed that the proportion of forest land and water land was too small, while the proportion of dense shrub, shrub, shrub-grass, bare soil grass was too large.ln the change speed of land-ase, dense shrub, shrub, bare soil grass have been increasing while shrub-grass has been decreasing, others have been relatively steady, In the change of land-use level, land-use has shown an overall declining trend. In the land-use of spatial pattem, diversity index and homogeneity index took on an increasing trend while dominance index took on a decreasing trend.