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

主要目的是研究与对照土壤相比，农林土壤有机质埋藏对表层和下层土壤有机碳(C)行为的影响。将对C股进行定量估计。分馏方法可以对土壤c进行定性评估。在过去的几十年中，许多物理和化学分馏方法以及部分生物分馏方法已经开发和实施。主要目的是分离不同的，最好是均匀的C组分，每个组分表现出不同的特征（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。碳分馏结果也用于生成和校准土壤碳模型。结果的可重复性是确定不同碳库的重要前提。与2012/13应用阶段相比，在C分馏方法方面出现了新的事实，这些方法将在当前项目中应用和进一步发展。根据最近（2013/14）相关文献的全面评估，对于这些程序的单个步骤，到目前为止还没有找到最佳解决方案。Benbi教授在开发和应用C分馏方法方面有着长期的经验，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，我们期望在方法比较、土壤有机质组成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。

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.