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A comparison of southern pine beetle hazard rating systems on forest industry lands.

机译:森林工业用地上南方松树甲虫危害等级系统的比较。

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摘要

This study examines the Southern Pine Beetle (SPB) hazard rating systems used in East Texas. The purpose of this study is to examine the correlation between the Mason (1981) system of SPB hazard rating and the 75 meter resolution 2006 National Insect and Disease Risk Map, compiled by the USDA Forest Service, State and Private Forestry Area, and Forest Health Protection Unit. The Mason system is a proven accurate hazard rating system (78% predictive accuracy), but requires labor intensive inventory data. The 2006 National Insect and Disease Risk Map is produced through a repeatable, transparent process through which interactive spatial and temporal risk assessments can be conducted at various scales to aid in the allocation of resources for forest health management (Krist 2006). This analysis examined the correlation between the two methods at the forest stand level, which is the level at which forest management decisions are made.;The results indicated a lack of significant correlation between the hazard predicted probability of the Mason (1981) system and the 2006 National Insect and Disease Risk Map. The paired t-test, when the SPSS 16.0 Graduate Student Version was run on all recoded stands, returned a Sig. (2-tailed) value of .054. The paired t-test returned a Sig. (2-tailed) value of .001 when ran on all stands' critical values. It was determined that future inclusion of the available 30 meter resolution data produced by the 2006 National Insect and Disease Risk Map may significantly improve the results.
机译:这项研究检查了东德克萨斯州使用的南部松树甲虫(SPB)危害等级系统。这项研究的目的是检验由美国农业部森林服务局,州和私有林区编制的,梅森(1981)的SPB危险等级系统与分辨率为75米的2006年《国家昆虫与疾病风险图》之间的相关性。保护单元。梅森(Mason)系统是经过验证的准确的危险等级系统(预测准确度为78%),但是需要大量劳动的清单数据。 2006年《国家昆虫和疾病风险地图》是通过可重复,透明的过程制作的,可以通过该过程进行各种规模的交互式时空风险评估,以帮助分配用于森林健康管理的资源(Krist 2006)。该分析检查了在林分一级(即森林管理决策的一级)这两种方法之间的相关性;结果表明,Mason(1981)系统的危害预测概率与林分等级之间缺乏显着相关性。 2006年国家昆虫和疾病风险地图。在所有经过重新编码的看台上运行SPSS 16.0研究生版时,配对t检验返回Sig。 (2-尾)值为.054。配对的t检验返回了Sig。当在所有机架的临界值上运行时(2尾)值为.001。可以确定的是,将来包含2006年《国家昆虫与疾病风险地图》中提供的30米分辨率数据可能会大大改善结果。

著录项

  • 作者

    Reed, Randy Ryan.;

  • 作者单位

    Stephen F. Austin State University.;

  • 授予单位 Stephen F. Austin State University.;
  • 学科 Biology Entomology.;Agriculture Forestry and Wildlife.
  • 学位 M.S.
  • 年度 2008
  • 页码 42 p.
  • 总页数 42
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 昆虫学;森林生物学;
  • 关键词

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