...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecological research >Vulnerability to strong winds for major tree species in a northern Japanese mixed forest: analyses of historical data
【24h】

Vulnerability to strong winds for major tree species in a northern Japanese mixed forest: analyses of historical data

机译：日本北部混交林中主要树木的强风脆弱性：历史数据分析

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 study examined historical census data to evaluate the vulnerability of major tall-tree species in northern Japan to strong winds. Intensive data, which measured more than 20,000 damaged trees (denned as trees that were killed or lost their major crown) in > 500 ha of a natural mixed forest, were collected immediately after a severe typhoon in 1954. More than half of the damaged trees had been uprooted, and the negative size-dependency was found for the proportion of uprooting throughout species. Simple correlation analyses with respect to the averaged species-specific characteristics suggested that tree species with a high crown-depth/height tended to uproot (against to stem breakage) in a size-class with diameter at breast height 30—50 cm. Although the census data had yielded no information about non-damaged trees, the estimation of pre-disturbed stand (based on 63 1-ha plot data together with aerial photographs and GIS) revealed that the observed damage reached ca. 25% in terms of basal area. The proportion of damaged trees seemed to be doubled among species (15-42% in basal area). A higher proportion of uprooting, which indicates a large supply of tip-up mounds, and mixture of less vulnerable species, might contribute to recovery process after a wind disturbance in this type of mixed forests.
机译：这项研究检查了历史人口普查数据，以评估日本北部主要高大树种对强风的脆弱性。 1954年发生严重台风后，立即收集了密集数据，该数据测量了超过500公顷的天然混交林中的20,000多棵受损树木（被砍死或失去了大树冠）。超过一半的受损树木已被连根拔起，并且发现整个物种中连根拔除的比例具有负的大小相关性。关于平均物种特定特征的简单相关分析表明，树冠深度/高度较高的树种趋向于以直径为胸高30–50 cm的大小等级连根拔起（抗茎裂）。尽管人口普查数据未得出未受损树木的信息，但对预扰林分的估算（基于63个1公顷的样地数据以及航拍照片和GIS）显示，观测到的破坏达到了大约1200万。占基础面积的25％。物种间受损树木的比例似乎翻了一番（占基础面积的15-42％）。连根拔起的比例较高，这表明大量的tip足小丘和脆弱性较弱的物种混合在一起，可能在这种类型的混交林遭受风灾后促进恢复进程。

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