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

林业资源管理 ›› 2011›› Issue (1): 72-77.

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

刘会锋¹, 陈冰¹, 周翠鸣², 赵希宽¹, 黄超¹

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

收稿日期:2010-11-17 修回日期:2010-12-09 出版日期:2011-02-28 发布日期:2020-12-16
作者简介:刘会锋(1982-),男,陕西神木人,助理工程师,学士,主要从事森林生态方面的研究。Email:lhf-515@163.com
基金资助:
黑龙江省科技攻关项目(GB07B305)

Influence of Two Fire Intensities on Coarse Woody Debris in Pinus pumila-Larix gmelini Forests in Greater Hinggan Mountains

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

Received:2010-11-17 Revised:2010-12-09 Online:2011-02-28 Published:2020-12-16

摘要/Abstract

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(CoarseWoodyDebris,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。

关键词: 粗木质残体, 偃松落叶松林, 腐烂等级, 径级, 覆盖面积

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/hm²,199.77m³/hm²,217.73m³/hm² in natural forest,lightly burned forest and heavily burned forest respectively.The volume of natural forest between burned forest was different,but no difference between lightly burned forest and heavily burned forest,which showed the fire disturbance changed the volume and altered the composition of coarse woody debris,but no big impact on the composition of CWD.The CWD diameter class was 2-20cm in natural forest and heavily burned forest,standing dead trees,fallen trees and stumps,each accounting for 34%,64% and 2% and 94%,5% and 1% of the total volume respectively.The CWD was diameter class 2-10 cm in lightly burned forest,standing dead wood,fallen trees and stumps,each accounting for the 47%,50% and 3% of the total volume respectively.It can be seen that the three types of forest of CWD were concentrated in small diameter of standing dead wood and fallen trees,that is,the small diameter of standing dead wood and fallen trees are the major source of CWD in the three types of forests.The volume of forests were increased after forests were disturbed by fire,and the fire may increase the CWD inputs.

Key words: coarse woody debris, Pinus pumila-Larix gmelini forests, decay class, diameter class, covered areas

中图分类号:

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): 72-77.

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 WANAGEMENT, 2011,(1): 72-77.

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