昆明地区绿化树种鲜叶热解和燃烧烟密度

为了解园林绿化树种鲜叶在防火期热解和燃烧的烟气生成特性，用JCY-2型烟密度测定仪对昆明地区13种常见的园林绿化树种鲜叶进行了烟密度测定，分析了13种园林绿化树种的新叶、近成熟叶和老叶的产烟量、最大烟密度值、烟密度等级的关系，为研究管护措施、强度、频率等如何影响园林绿化植物鲜叶热解和燃烧的烟密度提供依据。研究表明：单位质量鲜叶干物质产烟量总体上呈现新叶＞近成熟叶＞老叶的特性；鲜叶质量相近时，含水率越大，烟密度等级越小。

The smoke density of fresh leaf pyrolysis andcombustion of landscaping treesin Kunming area

In order to understand the smoke formation characteristics of fresh leaves of landscaping trees during pyrolysis and combustion in fire prevention period, the smoke density of fresh leaves of 13 common landscaping tree species in Kunming area was measured by JCY-2 type smoke density tester.The relationship between smoke yield, maximum smoke density and smoke density of new leaves, near mature leaves and old leaves of 13 landscaping tree species was analyzed. The conclusion can provide a scientific basis for understanding how management measures, intensity and frequency affect the smoke density of fresh leaves pyrolysis and combustion of landscape plants.The studies showed that: the smoke yield of dry leaves per unit mass of plants is new leaves > near mature leaves > old leaves; When the mass of fresh leaves is similar, the greater the water content, the smaller the smoke density level.