辽宁东部地区森林地被可燃物及其燃烧性的研究

Combustible Ground Cover and Combustibility of Forest in Eastern Liaoning

对辽宁东部山区主要林型及其地被可燃物的种类组成、载量和燃烧性进行了调查研究 ,结果表明该区有8种主要常见林型 ,阔叶树林型下的灌木层、草本层种类数量和盖度明显大于针叶树 ,针叶树凋落物层的盖度大于阔叶树。林型地被可燃物载量变化范围为8.83～26.29t·hm-2。室内测定各种林型凋落物层燃烧性能结果表明 ,针叶树林地被可燃物的燃烧性明显强于阔叶树 ,易燃烧性排序为油松人工纯林、红松人工纯林、赤松人工纯林、栗树人工纯林、天然杂木林、天然栎树林、落叶松人工纯林、栎树矮林。

The main forest types,kinds and cover degrees of combustible ground cover,fuel loading,and fuel combustibility in mountain area of eastern Liaoning Province were studied.The result showed that there were8kinds of main forest types in the eastern region of Liaoning.Under broad-leaved forest type,there were more combustible ground cover of shrubs and herb layers.The cover degree of coniferous litter layer was more than broad-leaved.The change of fuel loading was from8.83t·hm -2 to26.29t·hm -2 .The coniferous trees had stronger litter combustibility.The combustible order was Pinus tabulaeformis,P.koraiensis,P.densiflora,Casˉtanea mollissima?weed tree stands,Larix olgensis,Ouercus mongolica,Ouercus mongolica(low forest).