大兴安岭北坡火烧迹地森林景观恢复及其影响因子——以郁闭度指标为例

应用生态学报 ›› 2005, Vol. 16 ›› Issue (9): 1711-1718.

大兴安岭北坡火烧迹地森林景观恢复及其影响因子——以郁闭度指标为例

解伏菊^1,2, 肖笃宁¹, 李秀珍¹, 魏建兵^1,2, 王绪高^1,2

1. 中国科学院沈阳应用生态研究所, 沈阳 110016;
2. 中国科学院研究生院, 北京 100039

收稿日期:2005-04-06 修回日期:2005-05-12 出版日期:2005-09-15 发布日期:2005-09-15
通讯作者: 李秀珍
基金资助:
国家自然科学基金项目(30270225,40331008)、中国科学院知识创新工程项目(KSCX2-SW-133)和中俄自然资源与生态环境联合研究中心专项经费资助项目.

Forest landscape restoration and its affecting factors in burned area of northern Great Xing′an Mountains—Taking forest coverage as an example

XIE Fuju^1,2, XIAO Duning¹, LI Xiuzhen¹, WEI Jianbing^1,2, WANG Xugao^1,2

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Received:2005-04-06 Revised:2005-05-12 Online:2005-09-15 Published:2005-09-15

摘要/Abstract

摘要： 197年发生在大兴安岭北坡的特大火灾造成了森林资源的巨大损失,森林景观恢复一直是人们关注的热点.本研究选取与森林生产力密切相关的郁闭度因子作为研究对象,以ArcView、ArcGIS等地理信息系统软件为研究平台,采用1987年和2000年两期森林资源二类调查数据,对郁闭度、火烧强度、抚育类型和地形因子等进行分级,利用Kendall等级相关分析、相似性分析等方法,探讨了森林郁闭度格局的恢复状况以及火烧强度、更新类型、地形因子对郁闭度恢复的影响.结果表明,2000年郁闭度等级构成与1987年火前相比发生了明显变化,无林地以及高郁闭度等级比重明显下降,较低郁闭度等级比重显著上升;火烧强度对火后恢复的影响最为关键,火烧强度与郁闭度等级呈负相关;更新措施短期内对郁闭度恢复影响不显著,但可以缩短森林演替的周期,对未来针叶林群落生产力恢复具有重要的促进作用;地形因子中坡度对郁闭度恢复影响最为明显,其次为坡位,坡向影响最弱.

关键词: 火烧因子, 生产力恢复, 郁闭度, 影响因子, 等级相关分析

Abstract: Forest landscape restoration has been an attractive issue since the catastrophic fire took place on the northern slope of Great Xing′an Mountains in 1987.Based on the China forest inventory data and employing Kendall Bivariate and Distances Correlation Analyses,an investigation was made to search for what changes of the forest coverage pattern being happened in this area during the past 13 years after fire,and how the fire severity,foster type and terrain factors influenced the restoration of forest coverage.The results showed that the forest coverage in 2000 changed a lot,in comparing with that in 1987 before fire.The percentage of non-stocked land area and coverage grade declined markedly,with lower coverage grade increased.Among all test factors,fire severity which was inversely correlated with forest coverage grade was the key one.Though the regeneration measures didn't markedly affect forest coverage restoration within a short period,they might shorten the cycle of forest succession and promote the productivity of coniferous forest in the future.Among three terrain factors,slope was the strongest one affecting forest coverage,followed by position and aspect.

Key words: Fire, Productivity restoration, Forest coverage, Factor analysis, Kendall correlation analysis

中图分类号:

解伏菊, 肖笃宁, 李秀珍, 魏建兵, 王绪高. 大兴安岭北坡火烧迹地森林景观恢复及其影响因子——以郁闭度指标为例[J]. 应用生态学报, 2005, 16(9): 1711-1718.

XIE Fuju, XIAO Duning, LI Xiuzhen, WEI Jianbing, WANG Xugao. Forest landscape restoration and its affecting factors in burned area of northern Great Xing′an Mountains—Taking forest coverage as an example[J]. Chinese Journal of Applied Ecology, 2005, 16(9): 1711-1718.

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