• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Scottish Forestry >Drought damage to pole-stage Sitka spruce and other conifers in north-east Scotland.
【24h】

Drought damage to pole-stage Sitka spruce and other conifers in north-east Scotland.

机译：干旱对苏格兰东北部极地级Sitka云杉和其他针叶树造成了破坏。

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

In May 2004, extensive damage was reported on pole stage and older Sitka spruce along the Dee valley in north-east Scotland. Three affected sites were assessed in detail between 2004 and 2006 to determine the cause of damage and monitor its development. Dead trees tended to be grouped, and by 2006 mortality averaged 22% across the three sites. Symptoms on surviving trees included varying degrees of top dieback, resinosis, and the formation of elongated lesions on stems and branches. An unidentified species of Phomopsis was isolated consistently from the margins of these lesions. A number of trees also had open stem cracks and internal radial cracks in the wood. Shoot growth of surviving trees was notably lower during 2004 and 2005 than in previous years. Rainfall in the Deeside area during 2003 was exceptionally low for a prolonged period from June until November, with soil moisture deficits of 200 mm or above for four consecutive months. It was concluded that drought during 2003 was the most likely cause of the damage based on the symptoms and timing of damage. The implications of this damage for the future health of Sitka spruce in eastern Scotland are discussed in the context of climate change.
机译：2004年5月，据报道在苏格兰东北部的迪河谷，极地阶段和较老的Sitka云杉遭到了严重破坏。在2004年至2006年期间，对三个受影响的地点进行了详细评估，以确定损坏的原因并监控其发展。死树倾向于分组，到2006年，这三个地点的死亡率平均为22％。幸存的树木的症状包括不同程度的顶部枯萎，树脂化以及茎和枝上形成细长的病变。从这些病灶的边缘一致地分离出一种未鉴定的拟金龟属物种。许多树木在木材中还存在开放的茎干裂纹和内部径向裂纹。在2004年和2005年，幸存树木的枝条生长明显低于往年。从6月到11月的很长一段时间里，2003年Deeside地区的降雨量异常低，连续四个月土壤水分亏缺200 mm或以上。结论是，根据损害的症状和时间，干旱是2003年最有可能造成损害的原因。在气候变化的背景下，讨论了这种损害对苏格兰东部锡特卡云杉未来健康的影响。

著录项

相似文献

  • 外文文献
  • 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