【摘要】 地形因子对土地利用类型在时空上的变化有重要的影响，能够为区域规划和经济发展提供一定的理论依据.以南充市为例，基于2000年、 2010年及2020年的土地覆被数据和数字高程模型，运用土地利用转移矩阵、地形分布指数，地形-面积频度分布等方法分析地形因子对土地利用类型分布及变化的影响.研究结果表明：南充市主要转变类型是耕地、林地及建设用地.截至2020年，耕地面积减少1 228.15 km2，林地面积增加1 023.11 km2，建设用地面积扩张了136.29 km2，其他土地利用类型面积变化不明显.高程和坡度对土地利用类型分布影响较大，高程及坡度越大，耕地和建设用地的面积分布越小，林地面积分布越大.研究结果以期为川东北丘陵地区的可持续发展提供一定参考依据.更多还原

【Abstract】 Topographic factors,with effect on the spatiotemporal changes of land use types,can provide a theoretical basis for regional planning and economic development. This study took Nanchong City as an example,based on the land cover data and digital elevation model in 2000,2010 and 2020,and analyzed the impact of topographic factors on the distribution and change of land use types by using the methods of land use transfer matrix,topographic distribution index,and topographic-area frequency distribution. The results show that the main transformation types in Nanchong are cultivated land, forest land and construction land. By 2020,the cultivated land area will decrease by 1 228.15 km2,the forest area will increase by 1 023.11 km2,the building land area will expand by 136.29 km2,and the area of other land use types will not change significantly. Elevation and slope have great influence on the distribution of land use types. The larger the elevation and slope,the smaller the area distribution of cultivated land and construction land,and the larger the area distribution of forest land. This study is expected to provide some reference for the sustainable development of the northeast hilly area of Sichuan.更多还原