...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Australian Forestry >Coarse woody debris, biodiversity and management: a review with particular reference to Tasmanian wet eucalypt forests
【24h】

Coarse woody debris, biodiversity and management: a review with particular reference to Tasmanian wet eucalypt forests

机译：粗大的木屑，生物多样性和管理：特别针对塔斯马尼亚湿式桉树林的回顾

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

This paper reviews the biodiversity conservation issues relating to management of coarse woody debris (CWD) in the wet eucalypt production forests of Tasmania, with particular emphasis on clearfell, burn and sow (CBS) silviculture and on fuelwood harvesting. CBS is the standard silvicultural system in these forests, while fuelwood harvesting, as currently proposed, would involve the recovery of a higher proportion of felled biomass than standard CBS, as well as some pre-existing CWD. Studies and practices from around the world are considered that have relevance to the temperate Australian forestry situation in general, and the Tasmanian situation in particular. The paper considers the ecological roles of CWD in natural forest ecosystems, emphasising its value as a key structural component and as habitat for biodiversity (especially invertebrates). Temporal continuity and spatial connectivity in supply of CWD, and presence of larger-diameter CWD, emerge as key factors determining community richness and composition. Whilst levels of CWD naturally fluctuate spatially and temporally in wet eucalypt forests, studies from northern temperate and boreal forests with similar dynamics demonstrate that, historically, management of native forests has tendedto result in a gradual diminution of the CWD resource. Larger-diameter material is readily diminished through management, with potential consequences for dependent biodiversity. Suggested mitigation measures (landscape-level and coupe-level), to accommodate biodiversity concerns and avoid a long-term conservation management problem for forest managers in Tasmania, centre on two main concerns. One is the likelihood that current standard rotation lengths used in CBS are probably too short to allow for the recruitment of sufficient CWD to replace that which is lost through harvesting, regeneration burning and natural decomposition. The other concern is that fuelwood harvesting may significantly increase the impacts of CBS on biodiversity in general and on threatened species in particular.
机译：本文回顾了塔斯马尼亚湿式桉树生产林中与粗木屑（CWD）管理相关的生物多样性保护问题，尤其着重于砍伐，燃烧和母猪（CBS）造林和薪材采伐。 CBS是这些森林中的标准造林系统，而按目前的提议，薪材采伐将涉及比标准CBS以及一些已有的CWD回收更多的砍伐生物量。人们认为，来自世界各地的研究和做法与总体上澳大利亚温带森林状况特别是塔斯马尼亚状况有关。本文考虑了CWD在天然森林生态系统中的生态作用，强调了CWD作为生物多样性（尤其是无脊椎动物）的关键结构成分和栖息地的价值。 CWD供应中的时间连续性和空间连通性以及大直径CWD的存在，是决定社区丰富程度和组成的关键因素。在湿的桉树森林中，CWD的水平会在时空上自然地波动，而来自北部温带和北方森林的动态相似的研究表明，从历史上看，对原始森林的管理往往会导致CWD资源的逐渐减少。通过管理，大直径材料很容易减少，这对依赖生物多样性具有潜在的影响。为了解决塔斯马尼亚州森林经营者的生物多样性问题并避免长期的保护管理问题，建议采取缓解措施（景观一级和小轿车一级），主要集中在两个方面。一种可能是，CBS中使用的当前标准旋转长度可能太短，以至于无法招募足够的CWD来替代因收获，再生燃烧和自然分解而损失的CWD。另一个问题是薪材砍伐可能会大大增加CBS对总体生物多样性，特别是对受威胁物种的影响。

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