人类活动是引起森林大火的一个主要因素
文章来源:未知 文章作者:enread 发布时间:2016-04-29 08:20 字体: [ ]  进入论坛
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A new study examining wildfires in California found that human activity explains as much about their frequency and location as climate influences. The researchers systematically1 looked at human behaviors and climate change together, which is unique and rarely attempted on an area of land this large. The findings suggest many models of wildfire predictions do not accurately2 account for human factors and may therefore be misleading when identifying the main causes or drivers of wildfires. The newest model proportionately accounts for climate change and human behavioral threats and allows experts to more accurately predict how much land is at risk of burning in California through 2050, which is estimated at more than 7 million acres in the next 25 years. 
 
The paper, "Incorporating Anthropogenic Influences into Fire Probability Models: Effects of Human Activity and Climate Change on Fire Activity in California," appears Thursday in PLOS ONE. 
 
Climate change affects the severity of the fire season and the amount and type of vegetation on the land, which are major variables in predicting wildfires. However, humans contribute another set of factors that influence wildfires, including where structures are built, and the frequency and location of ignitions from a variety of sources--everything from cigarettes on the highway to electrical poles that get blown down in Santa Ana winds. As a result of the near-saturation of the landscape, humans are currently responsible for igniting more than 90 percent of the wildfires in California.
 
"Individuals don't have much control over how climate change will affect wildfires in the future. However, we do have the ability to influence the other half of the equation, those variables that control our impact on the landscape," said Michael Mann, assistant professor of geography at the George Washington University and lead author of the study. "We can reduce our risks by disincentivizing housing development in fire-prone areas, better managing public land and rethinking the effectiveness of our current firefighting approach."


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1 systematically 7qhwn     
adv.有系统地
参考例句:
  • This government has systematically run down public services since it took office.这一屆政府自上台以来系统地削减了公共服务。
  • The rainforest is being systematically destroyed.雨林正被系统地毀灭。
2 accurately oJHyf     
adv.准确地,精确地
参考例句:
  • It is hard to hit the ball accurately.准确地击中球很难。
  • Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。
TAG标签: human climate wildfires
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