Module Mercator fellow plus funds for a workshop to the current project: Burial of organic matter for carbon sequestration: Potentials, processes and long-term effects

墨卡托研究员模块以及当前项目研讨会的资金：埋藏有机物用于碳封存：潜力、过程和长期影响

• 批准号: 275361602
• 负责人: Professor Dr. Rolf Nieder
• 金额: --
• 依托单位: Institut für Geoökologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2015
• 资助国家: 德国
• 起止时间: 2014-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/275361602?language=en
• 关键词: Module; Mercator; fellow; plus; funds

The major project aims are to investigate the influence of soil organic matter burial in agricultural and forestry soils on the behavior of organic carbon (C) in surface and subsoil horizons compared to reference soils. A quantitative estimate of the C stocks will be performed. Fractionation methods will allow a qualitative assessment of soil C. Numerous physical and chemical, and partly biological fractionation procedures have been developed and performed during the last few decades. The major aim is the separation of distinct, preferably homogeneous C fractions, each exhibiting different characteristics (e.g. turnover times). These methods form a basis for understanding the mechanisms and processes of soil C storage and stabilization. Carbon fractionation results are also used to generate and calibrate soil carbon models. Reproducibility of the results is an important precondition to define distinct carbon pools. Compared to the application phase 2012/13, new facts have emerged concerning the C fractionation methods that are intended to be applied and further developed in the current project. According to thorough evaluation of the most recent (2013/14) relevant literature, for single steps of these procedures, optimum solutions up to now have not been found. Prof. Benbi, has long-term experience with respect to development and application of C fractionation methods which can serve as meaningful alternatives to some of the commonly used methods. With his expertise we expect substantial progress concerning comparison of methods, characterization of soil organic matter composition, and modelling. His contribution in the frame of a Mercator Fellowship would be of great importance for the project.

本研究的主要目的是研究农林土壤有机质埋藏对土壤表层和底层有机碳(C)行为的影响。将对C类股进行量化估计。分级方法将使对土壤C的定性评估成为可能。在过去的几十年里，已经开发和执行了许多物理和化学的、部分是生物分级的程序。主要目标是分离不同的、最好是同质的C馏分，每个馏分都表现出不同的特征(例如周转时间)。这些方法为理解土壤碳储存和稳定的机制和过程奠定了基础。碳分馏结果也被用来生成和校准土壤碳模型。结果的重复性是确定不同碳库的重要前提。与2012/13年度应用阶段相比，关于本项目拟采用和进一步发展的碳分馏方法出现了新的事实。根据对最新(2013/14年度)相关文献的透彻评价，对于这些程序的单个步骤，迄今尚未找到最佳解决办法。Benbi教授在C分馏方法的开发和应用方面拥有长期的经验，这些方法可以作为一些常用方法的有意义的替代方法。凭借他的专业知识，我们期待在方法比较、土壤有机质组成的表征和建模方面取得实质性进展。他在墨卡托奖学金框架内的贡献将对该项目非常重要。