贵州省各县山地类型划分数据集（2015年）

贵州省各县山地类型划分数据集是基于30m×30m的DEM数据，以及88个县级行政单元边界等基础地理信息数据，使用二次均值变点法确定移动窗口面积与平均地形起伏度拟合的对数曲线拐点，以此求得贵州省地形起伏度的最佳统计单元。再根据联合国环境规划署（UNEP）、中国学者提出的山地分类指标体系，并结合贵州省山地实际海拔、坡度、地形起伏度等地形因子，1000m以下海拔地区需结合地形起伏度划分，1000-2500m之间海拔地区需考虑坡度因子的影响，将贵州省山地划分为丘陵、低山、中低山、中山、次高山等山地类型The mountain type classification dataset for county-level administrative units in Guizhou Province is constructed using 30m×30m DEM data and basic geographic information data such as the boundary data of 88 county-level divisions. Firstly, the quadratic mean change point method was applied to locate the inflection point of the logarithmic curve fitted by moving window area and average terrain relief, so as to obtain the optimal statistical unit for calculating terrain relief in Guizhou Province. Then, referring to the mountain classification index system proposed by the United Nations Environment Programme (UNEP) and Chinese scholars, and combining with topographic factors including the actual elevation, slope and terrain relief of mountains in Guizhou Province, the mountain classification was carried out with differentiated criteria: for regions with elevation below 1000m, classification was performed based on terrain relief; for regions with elevation ranging from 1000m to 2500m, the impact of slope factor was taken into account. Eventually, the mountains in Guizhou Province were divided into several types including hills, low mountains, medium-low mountains, medium mountains and sub-high mountains.