Sherman Ruth E, Martin Patrick H, Fahey Timothy J, Degloria Steve D
Department of Natural Resources, Cornell University, Ithaca, NY 14853, USA.
Ambio. 2008 Dec;37(7-8):535-41. doi: 10.1579/0044-7447-37.7.535.
In March and April 2005, severe fires burned over 1000 km2 of tropical montane forests in the Cordillera Central, Dominican Republic. The fire burned through our network of permanent vegetation plots, which were established in 1999 to examine interactions among environment, vegetation, and disturbance. We used QuickBird satellite imagery combined with field surveys to map the extent and severity of the fire across the landscape. The fire burned through 96% of the pine forest but quickly extinguished at the pine-cloud forest boundary along most of the ecotone. Topographic factors and fire severity had no influence on fire behavior at the ecotone. These observations support our original hypothesis that fire maintains the abrupt boundary between the pine and cloud forest vegetation in these mountains. Vegetation structure and composition played a direct role in regulating fire spread and behavior in this landscape.
2005年3月和4月，多米尼加共和国中部山脉发生严重火灾，烧毁了超过1000平方公里的热带山地森林。大火烧穿了我们于1999年设立的永久性植被样地网络，这些样地旨在研究环境、植被和干扰之间的相互作用。我们利用快鸟卫星图像并结合实地调查，绘制了整个区域火灾的范围和严重程度。大火烧毁了96%的松林，但在大部分生态交错带的松树 - 云雾林边界处迅速熄灭。地形因素和火灾严重程度对生态交错带的火灾行为没有影响。这些观察结果支持了我们最初的假设，即火灾维持了这些山脉中松林和云雾林植被之间的陡峭边界。植被结构和组成在调节该区域火灾蔓延和行为方面发挥了直接作用。
