摘要
在松嫩平原采用野外放火的方法 ,研究了草地火速度、火强度、火烈度、火形态、火烧迹地形状及其与气象因子、可燃物、可燃物床特性的关系 .结果表明 ,风速是影响草地头火速度最主要的因子 .除风速外 ,晴天时相对湿度对头火速度影响较大 ,降水后大气温度对头火速度影响较大 .头火速度 >侧翼火速度 >尾火速度 .风速与火强度、火深度、火烧迹地形状呈现显著正相关 .采用逐步回归方法建立了草地头火速度、火强度、火烧迹地形状的预测模型 .
Burning in field was adopted in Songnen Plain to study fire speed, fire intensit y, fire scorch, fire shape, shape of burning site and their relationships with c limatic factors, combustible, and combustible bed.Wind speed had the biggest ef fect on head fire speed. In addition to wind speed, relative humidity was the se cond significant influential factor for head fire speed in sunny days, and atmos phere temperature had significant influence after precipitation. The relation of fire speed was head fire speed>flank fire speed>back fire speed.Wind speed w as correlated to fire intensity,fire depth,and shape of burning site significa ntly and positively. A predictive model for head fire speed,fire intensity,and shape of burning site in grassland were established by step statistical method
出处
《应用生态学报》
CAS
CSCD
2001年第5期746-748,共3页
Chinese Journal of Applied Ecology
基金
国家重点基础研究规划项目 (G2 0 0 0 1 860 6)
国家自然科学基金资助项目 (3930 0 0 2 3)
关键词
草地火行为
可燃物
影响因子
预测模型
松嫩平原
Grassland fire behavior,Combustible,Influentia l factors,Predictive model,Songnen Plain.
