...
首页> 外文期刊>Southeastern naturalist >Hemlock Susceptibility to Hemlock Woolly Adelgid Attack in the Chattooga River Watershed
【24h】

Hemlock Susceptibility to Hemlock Woolly Adelgid Attack in the Chattooga River Watershed

机译:查图加河流域的铁杉易感阿德吉德铁杉袭击

获取原文
获取原文并翻译 | 示例
           

摘要

Adelges tsugae (Hemlock Woolly Adelgid [HWA]), an introduced pest, is impacting Tsuga canadensis (Eastern Hemlock), and T caroliniana (Carolina Hemlock) stands throughout the eastern United States. Currently, hemlock stands in the southeast US are on the leading edge of the infestation. This study investigated HWA distributions in the Chattooga River watershed, and examined relationships between site and stand variables and hemlock susceptibility to HWA attack. The following variables were examined: latitude, longitude, elevation, slope, aspect, terrain shape index (TSI), landform index (LFI), percent infestation, quadratic mean diameter, total basal area (BA), hemlock BA, non-hemlock BA, hemlock BA(%), non-hemlock BA(%), and tree height. Multiple regression with backward selection showed statistically significant relationships of HWA infestation to latitude (P = 0.0006), longitude (P < 0.0001), and TSI (P = 0.0316). The proximity of a hemlock stand to existing HWA infestations appears to be the primary factor influencing its susceptibility to attack.
机译:引入的害虫Adelges tsugae(Hemlock Woolly Adelgid [HWA])正在影响加拿大的Tsuga canadensis(东部铁杉),T caroliniana(Carolina Hemlock)遍布美国东部。目前,美国东南部的铁杉林处于这种病的最前沿。这项研究调查了查图加河流域中的HWA分布,并研究了站点和林分变量之间以及铁杉对HWA攻击的敏感性之间的关系。检查了以下变量:纬度,经度,海拔,坡度,坡度,地形形状指数(TSI),地形指数(LFI),侵染百分比,二次平均直径,总基础面积(BA),铁杉BA,非铁杉BA ,铁杉BA(%),非铁杉BA(%)和树高。多元回归和向后选择显示HWA感染与纬度(P = 0.0006),经度(P <0.0001)和TSI(P = 0.0316)的统计显着相关。铁杉树架与现有HWA感染的接近似乎是影响其易受攻击性的主要因素。

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