【摘要】 以内蒙古巴林左旗为研究区域，利用巴林左旗2000、2010和2020年三期Landsat遥感数据，从高程、坡度、坡向作为切入点，采用土地利用图谱分析法与分布指数法，分析了基于地形梯度的土地利用变化特征。结果表明：(1)巴林左旗土地利用类型主要以耕地、林地、草地为主，三者占土地总面积的90%以上，20年间草地和林地变化较明显，其余地类变化较小；土地利用变化模式图谱以保持恒定型与反复变化型为主，其中前者主要组合地类为“耕地-耕地-耕地”,后者主要组合地类为“草地-林地-草地”;(2)各地类在地形梯度上差异显著，耕地、建设用地和水域在低梯度区分布优势明显，草地在低、中地形梯度区分布优势明显，林地在较高梯度区分布优势明显；在不同的坡向各地类分布较均匀且分布指数差异较小；(3)土地利用信息图谱在不同地形梯度区差异明显，保持恒定型在低、高地形梯度均有主导优势，连续变化型在低梯度区分布优势明显，后期变化型在中级梯度区有主导优势，反复变化类型与前期变化型在中级高程梯度区、低级坡度梯度区、高坡向梯度区内分布优势明显。更多还原

【Abstract】 Taking Balin Left Banner of Inner Mongolia as the research area, the Landsat remote sensing data of 2000, 2010 and 2020 of Balin Left Banner is used as the entry point. Land use map analysis method and distribution index method were used to analyze the characteristics of land use change based on topographic gradient. The results showed that:(1) the main types of land use in Balin Left Banner were cultivated land, woodland and grassland, which accounted for more than 90% of the total land area. The changes of grassland and woodland were obvious in the past 20 years, while the changes of other land types were small. The patterns of land use change are dominated by constant types and recurrent types, among which the former is mainly composed of "cultivated land-cultivated land-cultivated land", while the latter is composed of "grassland-forestland-grassland";(2)The distribution of cultivated land, construction land and water area was obvious in the low gradient area; grassland was obvious in the low and middle gradient area, and woodland was obvious in the high gradient area. The class distribution was more uniform and the distribution index was less different in different slope direction;(3)The land use information map differs significantly in different topographic gradient areas. The constant pattern has dominant advantages in both low and high topographic gradients; the continuous change type has obvious distribution advantage in low gradient area, and the late change type has dominant advantage in intermediate gradient area. The distribution of repeated variation types and previous variation types is obvious in the middle elevation gradient area, low slope gradient area and high slope direction gradient areas.更多还原