辽东桤木防火林带内草本可燃物的动态变化分析  

Dynamic Changes of Herbs under Fire Control Belt of Liaodong Alder

作　　者：王月[1] 魏振宏[1] 高国平[1] 

机构地区：[1]沈阳农业大学林学院,沈阳110161

出　　处：《沈阳农业大学学报》2008年第2期197-200,共4页Journal of Shenyang Agricultural University

基　　金："九五"~"十五"期间辽宁省林业厅科技攻关项目[辽林1994-(3)]

摘　　要：对辽东桤木(Alnus tinctoria Sarg.)防火林带下草本可燃物的动态变化情况进行研究,分析辽东桤木林带的防火性能,为林业生产中防火林带的营造提供了理论依据。采取林下设立标准地定期抽样调查草本植物种类,天平称量法测定可燃物负荷量。结果表明:随着林龄的增长,辽东桤木防火林带下草本植物种类和个体种群数量总体均呈减少趋势;坡向对草本植物种类分布有影响,东坡的种类和种群数量少于西坡,上腹坡位少于中腹、下腹;随林龄增长,林下的草本植物负荷量是逐渐下降,15年生辽东桤木林下载荷量最小(54g·m-2)。Through investigation and study on dynamic changes of herbs under Alnus tinctoria fire control belt capability to build fire control belt was analyzed, which would provide a important reference for forestry production. The herb kind investigation adoped method of standard sample in forest belt; fuel-loading was measured with balance. Along with age of forest growth, in the forest land the herb varieties and the individual population quantity overall appeared a reduced tendency. The herbs were influented by slope. Herbs varieties and population quantity of east slope were less than those of west slope. The herb varieties of up abdomen slope were less than those of middle and low abdomen slope. Under the forest belt, the herbs load weights decreased gradually along with age of forest growth. Alnus tinctoria stands in 15 year age compared with other contrast forest types, the fule-loading was minimum （54g·m^-2）.

关 键 词：辽东桤木 可燃物 草本种类 负荷量 动态性 

分 类 号：S274.3[农业科学—农业水土工程]