[1]玉宝,王百田,红玉,等.晋西人工林综合密度效应分析[J].西北林学院学报,2011,26(04):167-171.
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晋西人工林综合密度效应分析()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第26卷
期数:
2011年04期
页码:
167-171
栏目:
森林经理
出版日期:
2011-07-30

文章信息/Info

作者:
玉宝;王百田;红玉;张占忠;文万荣;
国家林业局管理干部学院;北京林业大学水土保持学院;国家林业局调查规划设计院;山西省临汾市林业局;山西省吉县国营红旗林场;
关键词:
刺槐油松人工林密度效应晋西
文献标志码:
A
摘要:
以晋西刺槐和油松人工林59块样地数据,拟合了其平均胸径、平均单株材积及平均单株地上生物量的密度效应模型,分析了林分密度的综合影响。结果表明:(1)处于初植密度的油松林无林下更新。油松间伐林更新较好,随林分密度增加,更新密度趋于减少。(2)林下死地被物厚度与辛普森、香农多样性指数显著负相关,与生态优势度显著正相关。(3)吉县阴坡油松林,随密度增加,辛普森、香农及均匀度指数均减小,生态优势度增加。间伐林多样性指数明显好于未间伐林。油松间伐林密度与其辛普森、香农多样性指数显著负相关,与生态优势度显著正相关。(4)探讨生态公益林密度效应时,除了用材林密度效应常规指标外,应增加林下更新、林下植物多样性及死地被物厚度等指标。

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备注/Memo

备注/Memo:
林业公益性行业科研专项(200704031)
更新日期/Last Update: 2011-05-20