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Climate change and forest fires in Yukon Territory.

机译:育空地区的气候变化和森林大火。

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摘要

Climate change has the potential to affect the boreal forest of Canada. Forest fires are a crucial component of the boreal ecosystem and climate change may substantially alter the fire regime. Statistical relations between climate and forest fire were obtained by regression for three fire subdistricts (Old Crow, Mayo and Watson Lake) of Yukon Territory. The relations were derived from fire and climate records, available, in general, since 1960. Summer temperature was found to be positively correlated to forest fire occurrence, area burned, the Fire Weather Index and Seasonal Severity Rating. In most cases, summer precipitation and relative humidity were negatively correlated with these variables. Climate change scenarios were applied to these relations to project future forest fire regimes under a climate with doubled CO2. In comparison with the period of record, central Yukon may have significantly more fires, area burned and an increased fire danger in the future.
机译:气候变化有可能影响加拿大的北方森林。森林火灾是北方生态系统的重要组成部分,气候变化可能会大大改变着火状况。通过对育空地区的三个火灾分区(老乌鸦,梅奥和沃森湖)进行回归,得出了气候与森林火灾之间的统计关系。这种关系是从1960年以来的大火和气候记录中得出的。夏季温度被发现与森林大火发生,燃烧面积,火灾天气指数和季节性严重等级成正相关。在大多数情况下,夏季降水和相对湿度与这些变量负相关。将气候变化情景应用于这些关系,以预测在CO2倍增的气候下未来的森林火灾情况。与有记录的时期相比,育空地区中部将来可能会发生更多的大火,烧毁区域,并增加火灾危险。

著录项

  • 作者

    McCoy, Vickie.;

  • 作者单位

    Carleton University (Canada).;

  • 授予单位 Carleton University (Canada).;
  • 学科 Physical Geography.
  • 学位 M.A.
  • 年度 2002
  • 页码 142 p.
  • 总页数 142
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然地理学;
  • 关键词

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