• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Forest Ecology and Management >Influence of gaps on some selected tree characteristics of edge trees in Norway spruce plantations
【24h】

Influence of gaps on some selected tree characteristics of edge trees in Norway spruce plantations

机译：空隙对挪威云杉人工林边缘树某些部分树性的影响

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 present study examined branch and stem characteristics of trees growing around gaps in Norway spruce plantations. Trees located at the edge of gaps with a radius of either 5m or 7m either unplanted or with supplementary planting were compared to trees in the original closed plantation. The experiment was carried out in two locations in the south of Sweden and the design included four blocks at each location and one replicate of each treatment in each block. The measurements were carried out on standing and felled trees in 2005 at the time of the first thinning. The results indicate a significant effect of gaps and supplementary planting on the diameter of the largest branch, the number of living branches close to breast height, branch basal area, height to the first living branch and taper. The effect of supplementary planting on branch and stem characteristics was greater in large gaps than in small ones. This study indicated that supplementary planting may be useful in affecting stem-form and branch parameters, although other studies have shown that the trees that result from supplementary planting contribute little to total production.
机译：本研究研究了挪威云杉人工林林隙周围生长的树木的枝干特征。将半径为5m或7m的未种植或补充种植的间隙边缘的树与原始封闭种植园中的树进行比较。该实验在瑞典南部的两个地点进行，设计包括每个地点四个街区，每个街区每种处理重复一遍。在第一次疏伐时，于2005年对站立和砍伐的树木进行了测量。结果表明，间隙和辅助种植对最大分支的直径，接近乳房高度的活动分支数量，分支基础面积，至第一个活动分支的高度和锥度有显着影响。大间隙的补充种植对枝和茎特性的影响大于小间隙。这项研究表明补充种植可能会影响茎形和分支参数，尽管其他研究表明，补充种植产生的树木对总产量的贡献很小。

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