Disturbance Interactions, Management, and Implications for Future Carbon Sequestration

干扰相互作用、管理以及对未来碳封存的影响

• 批准号: 1119819
• 负责人: Carol Wessman
• 金额: $ 23.06万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2014-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1119819&HistoricalAwards=false
• 关键词: Disturbance; Interactions; Management; Implications; Future

Natural disturbances are major factors affecting the carbon balance of ecosystems because they disrupt carbon stocks and increase atmospheric emissions. Disturbances of forests in western North America are expected to increase in frequency, extent, intensity and variety. However, fundamental questions remain about the effects of disturbance on carbon sequestration. The goal of this project is to improve understanding of the consequences of multiple disturbances on carbon sequestration in forests. Measured tree regeneration and carbon contents, geographic information systems, and modeling will be used to examine the outcomes of multiple interacting disturbances for carbon sequestration. A forest growth model will be used to estimate biomass accumulation and evaluate carbon sequestration across the landscape and under a variety of management and disturbance scenarios. Cascading large-scale disturbances such as drought, insect infestations, and fire will interact to shape future forest landscapes and consequently carbon balances. Forest management activities will also influence and be influenced by disturbances. This research builds on a database of soils and regeneration in northern Colorado that shows evidence of thresholds in forest recovery resulting from disturbance interactions. The proposed project will lend valuable insights into management options. A significant component of this work will be devoted to the support of two Doctoral students and the participation of several undergraduates. Every effort will be made to recruit graduate and undergraduate students from underrepresented minority groups through the Colorado Diversity Initiative in Science, Math, and Engineering. Research activities will be integrated into ecological education using case studies as experiential learning tools. This work will also be used in University of Colorado Landscape Ecology courses for students in interdisciplinary decision making curricula. Dialog with U.S. Forest Service offices in the Rocky Mountain Region will be maintained throughout this project, with a workshop conducted for resource managers in the final year of the project.

自然干扰是影响生态系统碳平衡的主要因素，因为它们破坏了碳储备并增加了大气排放。北美西部森林的干扰预计将增加频率，程度，强度和多样性。然而，关于干扰对碳隔离的影响仍然存在的基本问题。该项目的目的是提高人们对森林中多种干扰对碳固存的后果的理解。 测得的树的再生和碳含量，地理信息系统和建模将用于检查碳固存的多个相互作用干扰的结果。森林生长模型将用于估计生物量积累，并在整个景观中以及在各种管理和干扰情况下评估碳的隔离。干旱，昆虫侵扰和火灾等大规模干扰会造成造成未来森林景观的相互作用，从而塑造碳平衡。森林管理活动还将影响并受到干扰的影响。这项研究建立在科罗拉多州北部的土壤和再生数据库的基础上，该数据显示了由于干扰相互作用而导致的森林恢复阈值的证据。拟议的项目将为管理方案提供宝贵的见解。这项工作的重要组成部分将致力于两名博士生的支持以及几位大学生的参与。将尽一切努力通过科学，数学和工程学的科罗拉多州多样性倡议招募来自代表性不足的少数群体的研究生和本科生。 研究活动将使用案例研究作为经验学习工具纳入生态教育。 这项工作还将在科罗拉多大学景观生态课程中用于跨学科决策课程的学生。在该项目的最后一年，将在整个项目中与洛矶山脉地区的美国森林服务办公室进行对话，并在该项目的最后一年为资源经理举办研讨会。