黑龙江大兴安岭林区森林草类可燃物潜在能量研究

黑龙江大兴安岭林区森林草类植被能量释放主要取决于可燃物的生物量和发热量，可燃物的能量与含水率有着密切关系，而可燃物的含水率又与气角要素有着相关性。在对大兴安岭樟子松林、柞木林、山杨林、白桦林、落叶松、草类和采伐迹地等不同可燃物类型设置标准地并进行可燃物生物量调查的基础上，收集整理防火期内气象资料，分析可燃物含水率与气象因子的关系。结果表明，雨量多，相对湿度大，气温低，风小，含水率就多，相反则少；不同可燃物的发热量和生物量不同，潜在能量也不同，火的强度也不一样；不同可燃物类型，由于树种组成、年龄以及立地条件等不同，能量释放和火强度等也大不相同。

Study on the Potential Energy of Forest Fuel in Daxingan Mountain, Heilongjiang Province

The energy release of forest fuel is decided by its biomass loading and heat value, and has a close relation with its moisture content. The moisture content of fuel is affected by the weather conditions. For instance, when there is much rainfall precipitation, with high relative humidity, low temperature and low wind speed, the moisture content of fuels will be high, and vice versa. Different fuel types have diverse biomass loadings and heat values. The litter in surface is combustible and other fuel types are nonflammable or non combustible. Diversified fuel types have different amounts, structures, physical and chemical characteristics, and heat values. The conifer is more energetic than the broadleaf. Big branch releases more energies than small branch and grass. The variation of available energy is also due to the difference of tree species composition, age, and site conditions.