Effects of and Recovery from a Major Regional Disturbance in an Arctic Landscape, the Anaktuvuk River Fire of 2007

2007 年阿纳克图武克河火灾对北极景观的重大区域扰动的影响和恢复

• 批准号: 0808789
• 负责人: Gaius Shaver
• 金额: $ 8万
• 依托单位: Marine Biological Laboratory
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-01-15 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0808789&HistoricalAwards=false
• 关键词: Effects; Recovery; Major; Regional; Disturbance

This is an investigation of the initial impacts and recovery of the landscape affected by the Anaktuvuk River fire that occurred on the North Slope of Alaska in July-September 2007. The PIs will begin documenting recovery of the landscape including terrestrial and aquatic components. The "Anaktuvuk River" fire burned over 350 square miles (90,000 ha) of North Slope tundra between late July and late September, with most of the burning at the end of September when air temperatures were near or below freezing and most plant growth had ceased. This would be a very large fire in any year, and it was the largest in Alaska in 2007, but this fire was on the tundra where small fires occasionally burn but large ones are quite rare. The fire was large enough that it appears to include several complete 1st-3rd order watersheds. The area burned in this one fire was greater than the total area burned by all known fires on the North Slope since 1950. Most of this land is in the foothills region, including diverse tundra vegetation, streams, lakes, and wetlands at elevations of 200-600 m. This team will begin immediate planning for a survey and sampling program to begin in April or early May 2008 to continue through the following summer. Products of the research will include a unique data set on distribution, intensity, and patchiness of the burn, with documentation of initial impacts on element cycles and terrestrial and aquatic communities. Where possible with available instrumentation, impacts on surface energy balance and CO2 exchange will also be documented.

这是对2007年7月至9月发生在阿拉斯加北坡的Anaktuvuk河火灾的初步影响和景观恢复的调查。PI将开始记录景观的恢复，包括陆地和水生成分。7月下旬至9月下旬，“阿纳克图武克河”大火烧毁了超过350平方英里（90，000公顷）的北坡苔原，大部分燃烧发生在9月底，当时气温接近或低于冰点，大多数植物已经停止生长。这将是一个非常大的火灾在任何一年，这是最大的在阿拉斯加在2007年，但这场火灾是在苔原上，小火偶尔燃烧，但大的是相当罕见的。这场大火足够大，似乎包括几个完整的1 - 3阶流域。这场大火烧毁的面积超过了1950年以来北坡所有已知火灾烧毁的总面积。这片土地的大部分位于山麓地区，包括海拔200-600米的各种苔原植被、溪流、湖泊和湿地。该小组将开始立即规划一项调查和抽样方案，该方案将于2008年4月或5月初开始，并持续到下一个夏天。该研究的产品将包括一个独特的数据集的分布，强度和斑块的烧伤，与文件的初步影响元素循环和陆地和水生社区。在可能的情况下，利用现有仪器，还将记录对表面能量平衡和CO2交换的影响。