浅山丘陵区土地利用格局的地形梯度特征与变化研究

The distribution and change of the land use types in hilly region based on terrain features

运用地形位指数和地形分布指数,借助遥感和地理信息系统技术,对河北燕山浅山丘陵区1987~2010年间土地利用变化时空特征进行定量分析。结果表明：1）不同土地利用类型在地形位区段上分布差异化较为显著,低地形位区段为耕地、建设用地和水域的优势分布区,中地形位区段是草地和林地的优势分布区,高地形位区段是林地的优势分布区。2）20a间,不同土地利用类型的地形位空间分布变化主要表现为草地、建设用地和水域的分布优势区间段在收缩,林地的分布优势区间段在增大,耕地的分布优势区间段没有变化。

Based on the following remote sensing satellite images： TM images obtained in the same season in1987,2000 and 2010,with the terrain niche and distribution index,using the spatial overlay analyst of geographical information system,the land use variation data of hilly region in Yanshan mountains in Hebei province from1987 to 2010 was obtained and its spatial distribution characteristics were quantitatively analyzed. The results showed that：（ 1） The differences of land use distributions in the terrain section was significant,the advantage distribution of crop land,construction land and water body were in the low terrain sections; the advantage distribution of grass land was in the middle terrain sections; the advantage distribution of forest was in the high terrain sections.（ 2） The changes of different land use types in the terrain section were that the advantage distribution ranges of grass land,construction land and water body were narrowed,the advantage distribution ranges of forest was expanded and the advantage distribution ranges of crop land did not change.