水喷淋对防火林带枯落物含水率的影响  

Effects of Water Spray on Moisture Content of Litter in the Fire Forest Belt

作　　者：何莹泉 王振师[2] 陈雄伟 陈钰皓 刘锡辉[3] 余瑞娟 丁丹 刘培兴 朱卫东 HE Yingquan;WANG Zhenshi;CHEN Xiongwei;CHEN Yuhao;LIU Xihui;YU Ruijuan;DING Dan;LIU Peixing;ZHU Weidong(Guangdong Forestry Survey and Planning Institute, Guangzhou,Guangdong 510520, China;Guangdong Academy of forestry,Guangzhou,Guangdong 510520, China;Lingnan Integrated ,Exploration and Design Institute of Guangdong, Guangzhou,Guangdong, 510663 China)

机构地区：[1]广东省林业调查规划院,广东广州510520 [2]广东省林业科学研究院,广东广州510520 [3]广东省岭南综合勘察设计院,广东广州510663

出　　处：《林业与环境科学》2017年第2期71-76,共6页Forestry and Environmental Science

基　　金：广东省林业科技计划项目"广东省森林生态旅游区森林防火系统集成研究"(2012-02)

摘　　要：通过测定防火林带枯落物水喷淋前后含水率的变化,建立枯落物含水率与时间变化曲线模型,得出枯枝和枯叶的含水率与时间变化函数。结果表明,喷淋1 h后林内枯枝、枯叶含水率分别从喷淋前的17.6%、13.1%升至45.9%、59.2%,之后含水率随时间延长逐渐下降;喷淋后,林带内枯枝、枯叶由易燃和可燃状态转变为不燃和难燃状态,并分别维持26.4、23.9 h。1次有效的水喷淋能显著提高林带防火能力。The moisture content and time variation curve of litter-fall was established by measuring thechange of moisture content before and after spraying of litter,and the moisture content and time variation functionof dead branches and dead leaves were obtained.The results showed that the moisture content of dead branchesand dead leaves increased from17.6%,13.1%to45.9%,59.2%respectively,after water spraying,and then themoisture content decreased gradually with the time.After spraying,the dead branches and dead leaves in the forestbelt were changed from flammable and combustible to noncombustible and flame-resistant states and maintainedat26.4and23.9h respectively.An effective water spray can significantly improve the forest fire resistance.

关 键 词：水喷淋 防火林带 枯落物 含水率 

分 类 号：S762.3[农业科学—森林保护学]