Natural Abatement of Fire Hazard in Douglas-fir Blowdown and Thinning Fuelbeds
Natural Abatement of Fire Hazard in Douglas-fir Blowdown and Thinning Fuelbeds
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花旗松排污和稀释燃料层火灾危险的自然减轻
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
S. G. Pickford
中科院分区：
文献类型：
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作者：
E. Christiansen;S. G. Pickford
Churosequen.es道格拉斯冷杉人工间伐后的落叶层。非线性透镜将t平方回归拟合到RCsuhins数据中。研究结果证实，前陆缘薄壳的原始载量和深度在三、四十年内均有所下降。与已发表的研究结果相比较，黄松化石层的合理变化一般持续15年。一年生黄松枝条上的叶齿比非洲黄松多。shich将55%或更多的iLs foLiage重新关联为至少L rhre veds_blotdoun lirels中的更改反映了slash中的更改。除了MRC材料是初始存在的。好的燃料在钻石里只有三英寸。液体燃料的压缩时间更长，减速更慢，因此，液体燃料的熔化速度会更快，液体燃料会变得腐烂！li.ir abour 80 lears.这项研究的结果与其他人的结果相似。在三个方面消除了火灾隐患：消除火灾隐患与减少火灾隐患相似。R . n s d“c r“a，e，to o s t \ .
Churosequen.es oi n(lbeds resultirg from precomnrercial thinning and blowdorr in Douglas fir $ere neasured usnig standard lLrel inventon lerhriques. Non iinear len.\t squares regressions aere fitied lo the rcsuhins data. Resuhs confirmed that precornmi:r(ial thinnng slash loscs hal{ its origiral loading and depth wirhin trvo years. By conrparison with published rcsults, the sane change in sinilar fuelbeds iI ponderosa pnre ules l5 yeas. Foliage dentjon on twigs a.d branches was ril afri:r one year conparcd lo ponderosa pir. shich relained fifiv pcrcent or more of iLs foLiage for at leasL rhre veds_ Changes in blotdoun lirels mirror those in slash. excepr that mrc material is presenL initia t-. Fine fuels lless rhan three inches in diamdet {aI ro baclg.ound lerels wirhir tuo ro lour rem. L*ge fuels pcrsist longer ud decav more slowlv hur ev.ntualh melt anavSourd L,ss become rotreD !li.ir abour 80 lears. l'indings of this studv orroborate sinilar lindings bv orhers. rarnrlr rhat fire hazdd ni pre.otumcrci.l thnuing slash is satisfactori\ abatcd a{ter three r-ears: abatement is sinilar in blowdoiln bur fu.l deprh r n d l a r g " t " 1 , , . r . n s d " c r " a , e , , , , , , , t o s t \ .