...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Silva Fennica >Legacy effects of precommercial thinning on the natural regeneration of next rotation balsam fir stands in eastern Canada
【24h】

Legacy effects of precommercial thinning on the natural regeneration of next rotation balsam fir stands in eastern Canada

机译：先兆变薄对加拿大东部的下一个旋转天然再生的遗产效应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The Green River precommercial thinning (PCT) trial was established between 1959-1961 in New Brunswick (Canada) within natural balsam fir (Ales balsamea (L.) Mill.)-dominated stands. Three silviculture scenarios differing only by the increasing nominal spacings of PCT treatments (1.2 m, 1.8 m. 2.4 in) were compared to an unthinned control within randomized replicates that were clearcut harvested in 2008 and treated with herbicide in 2011. During the fourth post-harvest growing season, we assessed regeneration, competing vegetation and coarse woody debris (CWD; differentiated between large woody debris and slash) to assess the legacy effects of PCT on regeneration of next rotation stands. Our results confirmed that silviculture scenarios including PCT significantly increased conifer stocking in treated plots compared to control conditions, but only in the 1.8 m nominal spacing. Considering that treated and untreated stands were fully stocked, we conclude that PCT using the spacing gradient tested has no legacy effect on the regeneration of next rotation natural balsam fir stands. Given the known sensitivity of balsam fir to future climate conditions in this region. we suggest that future treatments should promote tree species diversity to support ecosystem resilience to climate change by favouring more warm-adapted species, such as some hardwoods.
机译：绿色河流生态变薄（PCT）试验是在1959 - 1961年在天然Balsam FIR中的新不伦瑞克（加拿大）之间建立的（Ales Balsamea（L.）磨坊。） - 主导的立场。只有在2008年清除的随机复制中增加的PCT治疗的额征间距增加了三种造林场景，这些情况仅增加了PCT治疗的额定间距（1.2米，1.8米，2.4英寸），并在2011年在2011年用除草剂治疗。在第四次后收获生长季节，我们评估了再生，竞争植被和粗木质碎片（CWD;在大型木质碎片和斜线之间分化），评估PCT对下一个旋转架的再生的遗留效果。我们的结果证实，与控制条件相比，造林情景包括PCT在处理的地块中显着增加了针叶树放养，但仅在1.8米处的间距中。考虑到处理和未经处理的立场完全储存，我们得出结论，使用所测试的间距梯度的PCT对下一个旋转天然Balsam冷杉的再生没有遗留影响。鉴于Balsam FIR对该地区未来气候条件的已知敏感性。我们建议未来的治疗应该促进树种多样性，以支持生态系统的恢复能力，通过有利于更加温暖的物种，例如一些硬木。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号