内蒙古大兴安岭地形对雷击火影响及基于NRBO-XGBoost的扑火因素预测
刘晓东, 黄薪钢, 李钢, 王国胜

Influence of terrain on lightning-ignited fires and prediction of firefighting factors based on NRBO-XGBoost in the Greater Khingan Mountains of Inner Mongolia
LIU Xiaodong, HUANG Xingang, LI Gang, WANG Guosheng
表1 大兴安岭重点国有林区地形因子的分级
Tab.1 Classification of topographic factors in key state-owned forest areas of the Greater Khingan Mountains
地形因子 分级
1 2 3 4 5 6
高程/m [200,500) [500,1 000) [1 000,1 500) [1 500,2 000)
坡度/(°) [0,0.5) [0.5,2) [2,5) [5,15) [15,35) [35,55)
地形起伏度/m [0,20) [20,75) [75,200) [200,600)