...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plant and Soil >Root strength and density decay after felling in a Silver Fir-Norway Spruce stand in the Italian Alps
【24h】

Root strength and density decay after felling in a Silver Fir-Norway Spruce stand in the Italian Alps

机译：在意大利阿尔卑斯山的银色冷杉-挪威云杉林中砍伐后，根系强度和密度下降

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

Forests induce a mechanical reinforcement of soil, generally quantified in terms of additional root cohesion (c (r) ), which decreases due to root decay after felling. The aim of this work is providing new field data on soil reinforcement by roots after trees cutting. The present work investigated c (r) decay in a mixed Silver Fir-Norway Spruce (Abies alba Mill. Picea abies (L.) Karst.) stand in the Italian Alps over a period of 3 years after felling by monitoring the two c (r) driving variables: root tensile resistance and root density. Results showed that a significant difference in root resistance occurred only 3 years after felling, whereas the decrease in the number of roots was significant in the second year. The degradation process was more rapid in shallower layers and for thinner roots, as a consequence of the pattern of biological activity rate. The reduction of c (r) after felling was, for a reference profile depth of 70 cm, 55 % in the first 2 years and another 16 % in the third year. The findings of this study, providing new data on the decrease of c (r) after felling, can be introduced into geotechnical models allowing a better estimation of the stability of forest hillslopes.
机译：森林会引起土壤的机械强化，通常以附加的根部内聚力（c（r））来量化，由于砍伐后根部腐烂而减少。这项工作的目的是提供树木砍伐后根系加固土壤的新领域数据。目前的工作是通过监测两个c（ r）驱动变量：根部抗张强度和根部密度。结果表明，在采伐后仅3年，根系抗性发生了显着差异，而在第二年，根系数量的减少显着。由于生物活性速率的模式，在较浅的层和较薄的根中，降解过程更加迅速。砍伐后的c（r）降低（对于70 cm的参考轮廓深度）在前两年为55％，在第三年为16％。这项研究的发现提供了有关砍伐后c（r）降低的新数据，可以引入到岩土模型中，从而可以更好地估计森林山坡的稳定性。

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