...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ecosphere >Climate changes and wildfire alter vegetation of Yellowstone National Park, but forest cover persists
【24h】

Climate changes and wildfire alter vegetation of Yellowstone National Park, but forest cover persists

机译：气候变化和野火改变了黄石国家公园的植被，但森林覆盖仍然存在

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We present landscape simulation results contrasting effects of changing climates on forest vegetation and fire regimes in Yellowstone National Park, USA , by mid‐21st century. We simulated potential changes to fire dynamics and forest characteristics under three future climate projections representing a range of potential future conditions using the Fire BGC v2 model. Under the future climate scenarios with moderate warming (2°C) and moderate increases in precipitation (3–5%), model simulations resulted in 1.2–4.2 times more burned area, decreases in forest cover (10–44%), and reductions in basal area (14–60%). In these same scenarios, lodgepole pine (Pinus contorta ) decreased in basal area (18–41%), while Douglas‐fir (Pseudotsuga menziesii ) basal area increased (21–58%). Conversely, mild warming (2°C) coupled with?greater increases in precipitation (12–13%) suggested an increase in forest cover and basal area by mid‐century, with spruce and subalpine fir increasing in abundance. Overall, we found changes in forest tree species compositions were caused by the climate‐mediated changes in fire regime (56–315% increase in annual area burned). Simulated changes in forest composition and fire regime under warming climates portray a landscape that shifts from lodgepole pine to Douglas‐fir caused by the interaction between the magnitude and seasonality of future climate changes, by climate‐induced changes in the frequency and intensity of wildfires, and by tree species response.
机译：我们提出的景观模拟结果与21世纪中叶之前气候变化对美国黄石国家公园的森林植被和火灾状况的影响形成了对比。我们使用Fire BGC v2模型模拟了三个未来气候预测下的火灾动态和森林特征的潜在变化，这些气候代表了一系列潜在的未来条件。在未来气候情景下，气候变暖（> 2°C），降水适度增加（3-5％），模型模拟导致燃烧面积增加1.2-4.2倍，森林覆盖率减少（10-44％），并且基底面积减少（14-60％）。在这些相同的情况下，基部面积的寄主松（ contorta）减少（18–41％），而道格拉斯冷杉（ Pseudotsuga menziesii）的基础面积增加（21–58％）。相反，温和的增温（<2°C）加上更大的降水增加（12-13％）表明到本世纪中叶森林覆盖率和基础面积增加，云杉和亚高山杉的丰度增加。总体而言，我们发现林木树种组成的变化是由气候介导的火情变化引起的（每年燃烧面积增加了56-315％）。气候变暖下森林组成和火灾状况的模拟变化描绘了一种景观，该景观是由未来气候变化的幅度和季节之间的相互作用，由气候引起的野火的频率和强度的变化引起的，从黑松转变为花旗松。并通过树种反应。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号