兴安落叶松老头林对大兴安岭森林景观变化的影响研究

摘要/Abstract

摘要： 采用空间直观景观模型LANDIS,以大兴安岭呼中林业局为研究区,研究对老头林进行采伐和不进行采伐预案下的森林景观变化动态。结果表明,在对老头林不进行采伐预案下,各物种的过熟林分布面积要高于进行采伐预案下的分布面积。老头林的存在能使森林景观组分和格局具有更高的稳定性,对采伐等干扰具有更大的抗性。因此,保护老头林对于大兴安岭森林的可持续发展具有重要的生态学意义。

关键词: 中国东北样带, 土壤氮分布, 气候变化, CO₂浓度倍增, 干旱胁迫

Abstract: In this study,we used a spatially explicit forest landscape model,LANDIS,to explore the succession dynamics in Huzhong Forest Bureau under two harvest scenarios: (1) the old-man trees are harvested and (2) the old-man trees are not harvested.Results showed that more over-matured cohorts appeared under harvest scenario (1) than scenario (2).Subsequently,the forest landscape component and pattern without harvest are more stable than that under harvest.Undisturbed old-man-forest is more resistant to anthropogenic disturbances (e.g.harvest).In view of this,it is recommended to reserve the old-man-forest area for the sustainable development of forest in the Daxinganling Mountain.

Key words: Northeast China Transect (NECT), Soil nitrogen distribution, Climate change, Doubled ambient CO_- concentration, Drought stress

中图分类号:

Q149

徐崇刚, 胡远满, 常禹, 李秀珍, 布仁仓, 贺红士. 兴安落叶松老头林对大兴安岭森林景观变化的影响研究[J]. 生态学杂志, 2004, (5): 77-83.

XU Chonggang, HU Yuanman, YU Chang, LI Xiuzhen, BU Renchang, HE Hongshi. Effect of “Old-man forest” of Larix gmelinii on forest landscape change in Daxinganling Mountain[J]. cje, 2004, (5): 77-83.

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