环嵩山地区史前聚落选址偏好区划分

从1 452处环嵩山地区史前聚落中随机抽取所占比例为60%的聚落,用于聚落选址偏好等级划分.利用GIS空间分析技术,讨论聚落分布与海拔高度、坡度、水系、地貌、土壤、气候等6个地理环境因子之间的关系,利用变异系数法确定各指标因子的权重,引进空间加权叠加法构建史前聚落选址偏好等级模型,将研究区划分为高、中、低3个史前聚落选址偏好等级区.利用剩余40%的聚落进行验证,结果表明模型精度比较高.划分结果可用于对环嵩山地区未发现的史前时期聚落可能存在的地理位置进行预测.

Prehistoric Settlement Sites Selection Preference zoning around Songshan area

Sixty percent of settlements were selected randomly from the 1452 prehistoric settlements in the area of Songshan culture circle for settlement sites selection preference zoning. The relationship was explored between the settlement distribution and the environment factors including the altitude, the slope, the river systems, the topography, the soil and the climate by GIS spatial analysis techniques. Weights of each index factor were calculated with the method of variation coefficient. Prehistoric settlement sites selection preference level model was constructed by dividing the study area into three levels: high level, medium level, low level with space weighted superposition method. The model was validated with the remained 40% of the settlements. The validation results show that the model is of a high accuracy, which can be used to predict the geographical location of the undiscovered settlements.