【摘要】 在大兴安岭森林火灾后7年冻土环境区选择不同程度火烧区(重度火烧区、轻度火烧区)与非过火区来对比分析冻土温湿度因子的变化。研究得出在整个生长季里火烧区的大气温度在重度火烧区与轻度火烧区分别比非过火区大3.53℃、17℃;大气相对湿度在重度火烧区与轻度火烧区分别比非过火区小13.06%、9.3%;土壤表面、5cm、10cm、20cm的温度在重度火烧区与轻度火烧区分别比非过火区大5.38℃、3.7℃、2.66℃、2.3℃、1.8℃、1.16℃、1.18℃、0.64℃;土壤5cm、10cm的含水率在重度火烧区与轻度火烧区分别比非过火区大1.84%、3.32%、3.76%、9.4%。研究森林火灾后冻土温湿度因子的变化规律可对以后火烧区的植被恢复提供气象依据。更多还原

【Abstract】 In this research,we choose different degrees of fire area(severe area fire area,mild fire area) and a non-fire district as the control in the Greater Hinggan mountains forest where fire had accurred in frozen soil environment in 2003 to analyze the change of the temperature and humidity.Research showed that throughout the growing season the air temperature in severe fire area and mild fire area were higher than the control respectively 3.53℃ and 17℃.Air relative humidity in severe fire area and mild fire area were lower than the control respectively 13.06% and 9.3%.The temperatures of soil surface,5cm,10cm,20cm in severe fire area and mild fire area were higher than the control respectively 5.38 ℃,3.7 ℃,2.66 ℃,2.3 ℃,1.8 ℃,1.16 ℃,1.18 ℃,0.64 ℃.soil moisture content of 5cm,10cm in severe fire area and mild fire area were higher than the control respectively 1.84%,3.32%,3.76%,9.4%. Researching the change rule of permafrost temperature and humidity can provid meteorological basis on restoration vegetation.更多还原