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The effect of low level forest harvesting on the water chemistry of boreal lakes in northeastern Ontario.

机译:低森林采伐量对安大略省东北部北方湖泊水化学的影响。

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摘要

Water chemistry was monitored in twenty-one headwater lakes located in Northeastern Ontario (49°38'N, 81°00'W) for three years prior to and three years after clearcut logging in 2005. Twelve of the twenty one lakes were left undisturbed to serve as a reference condition. The percentage of the catchments harvested ranged from 5 to 42%. Principal Component Analysis and Discriminant Function Analysis revealed that the lakes were grouped in a humic-intermediate-clear gradient. Two-way Analysis of Variance within these group designations revealed few significant (p0.05) seasonal and annual differences in water chemistry that could be attributed to forest harvesting or any relationships between the percentage of a catchment harvested and the chemical response of lakes. The results of this study are consistent with other studies across the Boreal Shield and Boreal Plain that indicate that small watersheds within the boreal forest can withstand low level harvesting pressures with minimal impacts on water chemistry.
机译:在2005年进行完整伐木之前和之后的三年中,对位于安大略省东北部(49°38'N,81°00'W)的二十一个源头湖进行了水化学监测。二十一个湖中的十二个未受干扰作为参考条件。收获的集水区的百分比范围为5%至42%。主成分分析和判别函数分析显示,湖泊以腐殖质-中度-清晰梯度分组。在这些组名称中的方差的双向分析显示,很少有明显的(p <0.05)季节性和年度水化学差异可归因于森林砍伐或集水百分比与湖泊的化学反应之间的任何关系。这项研究的结果与整个北方盾和北方​​平原的其他研究一致,这些研究表明,北方森林内的小流域可以承受低水平的收获压力,而对水化学的影响最小。

著录项

  • 作者

    Kerr, Jason.;

  • 作者单位

    University of Guelph (Canada).;

  • 授予单位 University of Guelph (Canada).;
  • 学科 Agriculture Forestry and Wildlife.;Geochemistry.;Environmental Sciences.
  • 学位 M.Sc.
  • 年度 2009
  • 页码 252 p.
  • 总页数 252
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 森林生物学;环境科学基础理论;地质学;
  • 关键词

  • 入库时间 2022-08-17 11:38:25

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