【摘要】 对烟气与大乔木、小乔木、灌木主干及大乔木叶间的对流、辐射换热进行了计算，分别比较了它们的总传热量和单位面积上的传热量。讨论了烟气流速、温度、林木尺寸、回流区等因素对换热的影响。在此基础上，对不同林木的火险特性进行了预测。更多还原

【Abstract】 The Convection and radiation between smoke and trunk of bigger arbor, smaller arbor, bush, and leaves of bigger arbor, was calculated, their total quantity of heat and density of heat were compared respectively, and the in- fluences of velocity and ternperature of smoke flow, size of woods, reflux zone on heat transfer wer discussed as well. On the basis of these, the forecasting of woods’ fire hazard was done.更多还原