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，因为它们扰乱了碳储存并增加了大气排放。北美西部森林的干扰预计将在频率、范围、强度和种类上增加。然而，关于干扰对碳封存的影响，根本问题仍然存在。该项目的目标是提高对多重干扰对森林碳汇影响的了解。将使用测量的树木再生和碳含量、地理信息系统和建模来检查碳固存的多种相互作用的干扰的结果。将使用森林生长模型来估计生物量积累，并在各种管理和干扰情况下评估整个地貌的碳固存。干旱、虫害和火灾等连续不断的大规模干扰将相互作用，塑造未来的森林景观，从而形成碳平衡。森林管理活动也将影响干扰，并受到干扰的影响。这项研究建立在科罗拉多州北部土壤和再生数据库的基础上，该数据库显示了干扰相互作用导致的森林恢复阈值的证据。拟议的项目将为管理选择提供宝贵的见解。这项工作的一个重要组成部分将致力于支持两名博士生和几名本科生的参与。将通过科罗拉多州科学、数学和工程多样性倡议，尽一切努力从代表性较低的少数群体中招收研究生和本科生。研究活动将融入生态教育，使用案例研究作为体验式学习工具。这项工作也将用于科罗拉多大学为跨学科决策课程的学生开设的景观生态学课程。在整个项目期间，将与落基山地区的美国林务局办公室保持对话，并在项目的最后一年为资源经理举办研讨会。