Linking Landscape Models of Fire, Vegetation, and Global Climate Change in the Florida Everglades

将佛罗里达大沼泽地的火灾、植被和全球气候变化景观模型联系起来

• 批准号: 0606801
• 负责人: Brian Beckage
• 金额: --
• 依托单位: University of Vermont & State Agricultural College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-04-01 至 2009-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0606801&HistoricalAwards=false
• 关键词: Linking; Landscape; Models; Fire; Vegetation

Linking landscape models of fire, vegetation, and global climate change in the Florida EvergladesPI: Beckage, Brian. Institution: University of Vermont DEB-0606801 Global warming may result in the rapid transformation of landscapes through feedbacks between fire frequency and ecosystem characteristics. The frequency of fire affects the composition of vegetation on the landscape. These changes, in turn, affect the frequency of fire, because vegetation varies greatly in flammability. This project will investigate how fire-adapted plant communities facilitate the initiation and spread of fire, while fire-intolerant communities inhibit fire except under extreme meteorological conditions. This work will model the behavior of the Everglades ecosystem in response to climatic forcing using a coupled landscape model of vegetation and fire that incorporates external climatic drivers, fire-vegetation feedbacks, and hydrology. The model will be parameterized using data recorded over the last half century, including ENSO conditions, precipitation, hydrology, vegetation, and fire. This project will broaden our theoretical understanding of the potential for climate change to move ecosystems across ecological thresholds that cause rapid shifts in the state of the ecosystem. Identification of these thresholds and their mechanisms will inform land managers of ecological changes that are likely to result from global warming, enabling them to better protect valuable natural resources such as the Florida Everglades. This project will support the training of a postdoctoral scholar in theoretical ecology.

连接佛罗里达州常土区的火灾，植被和全球气候变化的景观模型：贝克斯，布莱恩。机构：佛蒙特大学DEB-0606801全球变暖可能会导致通过火灾频率和生态系统特征之间的反馈来快速转化景观。 火的频率会影响景观上植被的组成。这些变化反过来会影响火的频率，因为植被在易燃性方面差异很大。该项目将调查火灾适应的植物社区如何促进起火和蔓延，而耐火社区除非在极端的气象条件下抑制火灾。 这项工作将模拟大沼泽地生态系统的行为，以响应气候强迫使用植被和火的耦合景观模型，该模型融合了外部气候驱动因素，火灾素食反馈和水文学。 该模型将使用过去半个世纪记录的数据进行参数化，包括ENSO条件，降水，水文学，植被和火。 该项目将扩大我们对气候变化潜力转移生态系统跨生态阈值转移生态系统的理论理解，从而导致生态系统状态的快速变化。 这些阈值及其机制的识别将为土地管理者提供生态变化，这可能是由全球变暖造成的，从而使他们能够更好地保护诸如佛罗里达宜民的有价值的自然资源。 该项目将支持理论生态学博士后学者的培训。