Causes and Consequences of Spatial Variation in Initial Post Fire Succession in the Yellowstone Landscape

摘要 提案编号：DEB-9806440 搅拌机：搅拌机 研究机构：威斯康星州大学 1998年的黄石公园大火影响了25万公顷的土地，在整个地貌上形成了一个燃烧严重程度的马赛克，可能会影响未来几十年或几个世纪的生态系统进程。 这项研究将制定定量预测火后的演替途径及其后果的生态系统功能在黄石景观。所采用的主要方法是对永久性地块进行测绘和监测，同时结合先进的空间分析和对叶面积和净初级生产力的测量。 重点是黄石公园景观的主要生态系统内部和之间的变异性，以及它们对大的共同干扰的反应的变异性。 这项研究还将有助于了解管理或气候变化造成的不同火灾制度的潜在影响。

ABSTRACT PROPOSAL # : DEB-9806440 INVESTIGATOR(S) : TURNER INSTITUTION: UNIVERSITY OF WISCONSIN The 1998 Yellowstone fires affected over 250,000 ha, creating a mosaic of burn severity over the landscape that may influence ecosystem processes for decades or centuries to come. This study will develop quantitive predictions of postfire successional pathways and their consequences for ecosystem function across the Yellowstone landscape. The principal methods to be used are mapping and monitoring of permanent plots, combined with sophisticated spatial analysis and measurements of leaf area and net primary productivity. The focus is on variability within and among the major ecosystems of the Yellowstone landscape, and on variability in their responses to a large, common disturbance. The study will also contribute to understanding of potential effects of different fire regimes resulting from either management or climate change.