| 2种火烧强度对大兴安岭偃松落叶松林粗木质残体的影响 |
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| 引用本文： | 刘会锋,陈冰,周翠鸣,赵希宽,黄超.2种火烧强度对大兴安岭偃松落叶松林粗木质残体的影响[J].林业资源管理,2011(1). |
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| 作者姓名： | 刘会锋 陈冰 周翠鸣 赵希宽 黄超 |
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| 作者单位： | 1. 大兴安岭地区农林科学院,黑龙江,加格达奇,165000
2. 中国科学院华南植物园,广州,510650 |
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| 摘 要： | 比较了大兴安岭地区的偃松落叶松原始林和2种不同火烧程度森林类型(轻度火烧林、重度火烧林)之间粗木质残体(Coarse Woody Debris,CWD)组成的差异。结果表明:原始林、轻度火烧林、重度火烧林的CWD蓄积分别为59.92m3/hm2,199.77m3/hm2,217.73m3/hm2,原始林和火烧林之间CWD材积之间有差异,而2种火烧林之间没有差异,说明火灾干扰改变了偃松落叶松林的CWD的组成结构,但是不同的火烧程度对森林CWD的影响程度差不多。原始林和重度火烧林CWD径级大部分为2～20cm,其中立枯木、倒木和伐桩分别占各自总蓄积量的34%,64%,2%和94%,5%,1%,轻度火烧林CWD大部分径级2～10cm,其中立枯木、倒木和伐桩分别占总蓄积量的47%,50%,3%,由此可看出3种不同林型的CWD都集中在小径级的立枯木和倒木中,即小径级的立枯木和倒木是3种林分CWD的主要来源。火烧后偃松落叶松林的蓄积量增加明显,因此可认为火烧可以增加森林CWD的输入量。
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| 关 键 词： | 粗木质残体 偃松落叶松林 腐烂等级 径级 覆盖面积 |
Influence of Two Fire Intensities on Coarse Woody Debris in Pinus pumila-Larix gmelini Forests in Greater Hinggan Mountains |
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| LIU Huifeng,CHEN Bing,ZHOU Cuiming,ZHAO Xikuan,HUANG Chao.Influence of Two Fire Intensities on Coarse Woody Debris in Pinus pumila-Larix gmelini Forests in Greater Hinggan Mountains[J].Forest Resources Management,2011(1). |
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| Authors: | LIU Huifeng CHEN Bing ZHOU Cuiming ZHAO Xikuan HUANG Chao |
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| Institution: | LIU Huifeng1,CHEN Bing1,ZHOU Cuiming2,ZHAO Xikuan1,HUANG Chao1(1.Greater Hinggan Mountains Academy of Agroforestry Sciences,Jagdaqi 165000,Heilongjiang,2.South China Botanical Garden,Chinese Academy of Sciences,Guangzhou 510650,China) |
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| Abstract: | Pinus pumila-Larix gmelini forests are the typical vegetation on Greater Hinggan Mountains and were disturbed for a long time by fire.This study compared CWD volume and composition of natural Pinus pumila-Larix gmelini forest and two types of burned forests(lightly burned forest,heavily burned forest).The results showed that:The average volume of CWD was 59.92m3/hm2,199.77 m3/hm2,217.73 m3/hm2 in natural forest,lightly burned forest and heavily burned forest respectively.The volume of natural forest between... |
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| Keywords: | coarse woody debris Pinus pumila-Larix gmelini forests decay class diameter class covered areas |
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