In order to explore the relationship between topographic factors and land use spatial pattern change, based on the distribution of land use status vector data and 30 m resolution in Hubei Province in2000, 2005, 2010 and 2015, DEM data were used to analyze the temporal and spatial patterns of land use in the south-western of Hubei province from 2000 to 2015, respectively, from the perspective of topographic factors such as terrain volatility, slope variability, aspect and topographic index. The results showed that: 1) From 2000 to 2015, land use types in south-western of Hubei Province were dominated by cultivated land, woodland and grassland, and the land use types were more than 95％, and the construction land increased rapidly. They increased from 394. 81 km2, 585. 84 km2 in 2000 to 751. 33 km2, 761. 56 km2 in 2015 respectively, which increased by 356. 52 km2, 175. 72 km2 respectively. 2) From 2000 to 2015, the land use pattern changed with the terrain gradient effect, and the low terrain gradient range was cultivated land and construction land, and the land use pattern was reduced by 314. 60 km2, 157. 69 km2, 60. 17 km2 and 0. 22 km2, respectively. 3) From 2000 to 2015, the landform and the terrain gradient were the dominant distribution areas of grassland and forest land, and the land area was small and scattered. The land map was stable and the area is 41 562. 54 km2. The pattern of change was cultivated land-cultivated land-arable land-arable land, woodland-woodland-woodland-woodland, grassland-grassland-grassland-grassland. The low terrain range was the dominant distribution area of the pre-type, the late change type and the continuous change type. The middle and low geodetic range was the stable distribution area of the stable and medium-term change type. The high terrain range was stable type, medium-term change type and early stage Variant advantage distribution area.%为探究地形因子与土地利用时空格局间的关系, 基于湖北省1:10万土地利用现状分类4期矢量数据 (2000, 2005, 2010和2015年) 及空间分辨率为30 m的DEM数据, 借助地学信息图谱方法, 从地形起伏度、坡度变率、坡向和地形位指数等地形因子视角, 探讨了鄂西南地区2000—2015年土地利用时空格局在不同地形因子梯度下的变化特征.结果表明:1) 鄂西南土地利用类型主要以耕地、林地和草地为主, 三者面积占区域总面积的95％以上. 15年间, 建设用地、水域分别由2000年的394. 81 km2、585. 84 km2增加到2015年的751. 33 km2、761. 56 km2, 分别增加了356. 52 km2、175. 72 km2;而耕地、草地、林地和未利用土地面积分别减少314. 60 km2, 157. 69 km2, 60. 17 km2, 0. 22 km2; 2) 鄂西南山区不同地形梯度区间用地类型分布规律差异明显.低地形梯度范围是耕地、建设用地和水域的优势分布区, 中高和高地形梯度范围则是草地和林地优势分布区;未利用土地面积较小且呈零散分布, 受地形梯度变化影响较小; 3) 研究区3个五年段土地利用变化图谱以稳定型为主, 该类型面积为41 562. 54 km2, 稳定型图谱主要涉及地类为耕地、林地和草地, 贯穿每个地形梯度区.低地形区土地利用变化图谱主要是前期型、后期变化型和持续变化型;中低和中高地形区土地利用变化图谱主要是稳定型和中期变化型;而高地形区土地利用变化图谱则主要是稳定型、中期变化型和前期变化型.
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