Collaborative Research: New Analyses of 50-Year Net Ecosystem Productivity and Carbon Accretion in Secondary Forests

合作研究：50年净生态系统生产力和次生林碳积累的新分析

• 批准号: 0717368
• 负责人: Daniel Richter
• 金额: $ 27.6万
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0717368&HistoricalAwards=false
• 关键词: Collaborative; Research; New; Analyses; 50

Atmospheric carbon dioxide is strongly influenced by both on-going and historic land management. Yet, the precise rates at which carbon is taken up by some forests, fields, and residential areas, and released by others, are not well quantified. This lack of precision can be attributed to an absence of field experiments that monitor carbon for more than a few years, and to a shortage of studies examining carbon stored deeply in the soil (1 ft). This proposed research builds on a 50-year record of carbon sequestration in trees, litter, soil, and large wood at the Calhoun Experimental Forest in South Carolina, one of the world's longest running forest studies of its kind. Because deep tree roots appear to have sequestered significant amounts of soil carbon, it is necessary to look more deeply belowground, inventorying roots and soil to depth. In this study, field research will be linked with computer exercises to evaluate the potential regional and global significance of carbon sequestration. This new project will greatly expand the ability of one of the world's finest long-term ecological studies to address the pressing issue of carbon cycling. The research will include undergraduate and graduate students and scientists at Duke University and Woods Hole Research Center. The research will also involve high school educators via collaboration with the renowned North Carolina-based Kenan Fellows Program that promotes science-teacher retention. The data may prove critical for improving land management for carbon sequestration and will be broadly distributed in the technical and public scientific literature.

大气中的二氧化碳受到正在进行的和历史上的土地管理的强烈影响。 然而，一些森林、农田和居民区吸收碳的精确速率以及其他地区释放碳的精确速率并没有很好的量化。 这种缺乏精确度的情况可以归因于缺乏几年以上监测碳的实地实验，以及缺乏研究土壤深层（1英尺）储存的碳的研究。 这项拟议中的研究建立在南卡罗来纳州卡尔霍恩实验森林的树木、凋落物、土壤和大块木材中50年的碳封存记录的基础上，这是世界上同类森林研究中持续时间最长的一项。 因为深树根似乎已经隔离了大量的土壤碳，所以有必要更深入地观察地下，清点深层的根系和土壤。 在这项研究中，实地研究将与计算机练习相结合，以评估碳固存的潜在区域和全球意义。这一新项目将大大扩展世界上最好的长期生态研究之一的能力，以解决碳循环的紧迫问题。 这项研究将包括本科生和研究生以及杜克大学和伍兹霍尔研究中心的科学家。 这项研究还将涉及高中教育工作者通过与著名的北卡罗来纳州的凯南研究员计划，促进科学教师保留合作。 这些数据可能对改善土地管理以实现碳固存至关重要，并将在技术和公共科学文献中广泛分发。