• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of forest research >Effects of slash chips placed around trees planted after whole-tree logging: movement and nutrient supply
【24h】

Effects of slash chips placed around trees planted after whole-tree logging: movement and nutrient supply

机译：砍伐整棵树木后种植的树木周围的砍伐木的影响：运动和养分供应

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

Whole-tree harvesting at clearcutting sites using cable yarding systems and processors disrupts the process of nutrient return via leafy and woody slash otherwise left on the forest floor. This study examined the effect of placing slash chips around trees planted in a clearcut area. Chips made from branches with needles (branch chips) and three types of wood scrap chips (wood chips) were prepared for the study. Changes in the thickness of slash chip layers and in the concentration and weight of decomposing chips were measured. The nutrient effect of applying chips to the soil was analyzed, and the effects of chip coverage on weed control were measured. The branch and 18-mm-thick wood chips were stable on slopes; 9- and 4-mm-thick wood chips readily shifted to the lower and outer positions in the plots. On branch chips and wood chips, the annual rate of decomposition (k) calculated by exponential model was 0.69-0.7 and 0.04-0.17/year, respectively. Branch chips provided more nutrients for decomposers, and were rapidly decomposed during the first month. Nevertheless, the nutrient effect on the soil could not be confirmed. Placing branch or wood chips around planted trees effectively eliminated the need for weeding for 1 year, but these light materials did not suppress shrub sprouting.
机译：使用电缆堆放系统和处理器在砍伐现场进行整树采伐，会通过绿叶和木质砍伐物破坏养分的返回过程，否则会留在林地上。这项研究检查了在砍伐树木的树木周围放置切屑的效果。为进行研究，准备了由带有针的树枝制成的碎片（分支碎片）和三种木屑碎片（木质碎片）。测量斜切屑层的厚度以及分解切屑的浓度和重量的变化。分析了将薯片施用到土壤上的养分效应，并测量了薯片覆盖率对杂草防治的影响。树枝和18毫米厚的木片在斜坡上稳定。厚度为9毫米和4毫米的木片很容易转移到地块的下部和外部。在枝条和木屑上，通过指数模型计算的年分解率（k）分别为0.69-0.7和0.04-0.17 /年。分支碎片为分解者提供了更多的营养，并在第一个月迅速分解。然而，尚不能确定对土壤的养分效应。在种植的树木周围放置树枝或木屑有效地消除了一年的除草需求，但这些轻质材料并未抑制灌木发芽。

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