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首页> 外文会议>Conference on Forest and Water in A Changing Environment; 20060808-10; Beijing(CN) >THE EFFECT OF WILDFIRE ON WATERSHED HYDROLOGY AND BIOGEOCHEMISTRY IN INTERIOR BRITISH COLUMBIA
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THE EFFECT OF WILDFIRE ON WATERSHED HYDROLOGY AND BIOGEOCHEMISTRY IN INTERIOR BRITISH COLUMBIA

机译：WILDFIRE对内陆不列颠哥伦比亚省流域水文学和生物地球化学的影响

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摘要

The most conspicuous role of wildfires is in maintaining or replacing ecosystems. Much of what we know about the effect of wildfire is drawn from ecosystem maintaining fires, probably because they have a relatively short return period. The short return period and relatively low fuel load accumulation results in relatively low intensity fires. Fire return frequency in grasslands and low elevation forests of southern British Columbia before European settlement was between 5 and 20 y (1). These fires were relatively small and of low intensity. Forests have encroached into grasslands of southern British Columbia in response to fire suppression. For example, 114,000 ha of grassland have been lost to forest encroachment and in-growth in the Rocky Mountain Trench in the last half century (1).
机译：野火最明显的作用是维护或替代生态系统。我们对野火的影响了解的大部分内容都来自生态系统维持火势，这可能是因为它们的返回期相对较短。短暂的返回期和相对较低的燃料负荷积累导致相对较低强度的火灾。欧洲定居之前，不列颠哥伦比亚省南部草原和低海拔森林的回火频率为5至20年（1）。这些火灾相对较小，强度较低。为了抑制火灾，森林入侵了不列颠哥伦比亚省南部的草原。例如，在过去半个世纪中，落基山海沟的森林侵蚀和林木生长损失了114,000公顷的草地（1）。

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