Organic matter cycling along geochemical, geomorphic and disturbance gradients in forests and cropland of the African Tropics – Project TropSOC Database Version 1.0-猫眼课题宝

DOI：

10.5194/essd-2021-73

发表时间：

2021-04

期刊：

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作者：

S. Doetterl;Rodrigue Asifiwe;G. Baert;F. Bamba;M. Bauters;P. Boeckx;Benjamin Bukombe;G. Cadisch;M. Cooper;L. Cizungu;A. Hoyt;C. Kabaseke;K. Kalbitz;Laurent K. Kidinda;Annina Maier;Moritz Mainka;Julia Mayrock;Daniel Muhindo;B. Mujinya;Serge Mukotanyi;Leon Nabahungu;M. Reichenbach;B. Rewald;J. Six;Anna Stegmann;Laura Summerauer;Robin Unseld;B. Vanlauwe;K. Van Oost;K. Verheyen;C. Vogel;F. Wilken;P. Fiener

抽象的。非洲热带地区是现代土地利用变化的热点地区，同时与植物、土壤和大气之间的碳 (C) 和养分循环密切相关。然而，土地转化对生物地球化学循环的影响仍然很大程度上未知，因为它们没有在定义生物过程发生的地貌、地球化学和土壤学框架的景观背景下进行研究。因此，热带土壤对侵蚀和土地转化干扰的反应是评估热带景观为子孙后代种植粮食的承载能力、预测从土壤到大气的温室气体通量（GHG）以及未来地球系统动态的巨大不确定性之一。在这里，我们描述了作为“与土壤地球化学和土地利用变化相关的侵蚀扰动梯度的热带土壤有机碳动态”（TropSOC）项目的一部分而创建的开放访问数据库的 1.0 版本。 TropSOC v1.0 包含 2017 年至 2020 年间从 136 个原始热带森林和农田收集的关于土壤、植被、环境特性和土地管理的时空明确数据，作为东刚果盆地和东非裂谷系统多项监测和采样活动的一部分。几个专注于土壤微生物活动、土壤中碳循环和碳稳定性的实验室实验的结果补充了该数据集，提供了第一个景观尺度数据集，用于研究地质学、地貌学和成土作用之间的联系和反馈，作为非洲热带地区各种自然和管理系统中生物地球化学循环的控制。 TropSOC 数据库的分层和跨学科结构允许将土壤和植被动态的各种参数和观测结果与也可以在层次结构的一个或多个级别上测量的其他支持信息联系起来。 TropSOC 的数据为提高我们对动态且多样化的热带非洲（农业）生态系统中生物地球化学循环命运的理解做出了重大贡献。 TropSOC v1.0 可以通过作为本手稿的一部分提供的补充材料来访问，也可以通过刚果生物地球化学观测站和 GFZ 数据存储库的网站单独下载，随着项目的发展，将提供数据库的版本更新。

Abstract. The African Tropics are hotspots of modern-day land-use change and are, at the same time, of great relevance for the cycling of carbon (C) and nutrients between plants, soils and the atmosphere. However, the consequences of land conversion on biogeochemical cycles are still largely unknown as they are not studied in a landscape context that defines the geomorphic, geochemically and pedological framework in which biological processes take place. Thus, the response of tropical soils to disturbance by erosion and land conversion is one of the great uncertainties in assessing the carrying capacity of tropical landscapes to grow food for future generations and in predicting greenhouse gas fluxes (GHG) from soils to the atmosphere and, hence, future earth system dynamics. Here, we describe version 1.0 of an open access database created as part of the project “Tropical soil organic carbon dynamics along erosional disturbance gradients in relation to variability in soil geochemistry and land use” (TropSOC). TropSOC v1.0 contains spatial and temporal explicit data on soil, vegetation, environmental properties and land management collected from 136 pristine tropical forest and cropland plots between 2017 and 2020 as part of several monitoring and sampling campaigns in the Eastern Congo Basin and the East African Rift Valley System. The results of several laboratory experiments focusing on soil microbial activity, C cycling and C stabilization in soils complement the dataset to deliver one of the first landscape scale datasets to study the linkages and feedbacks between geology, geomorphology and pedogenesis as controls on biogeochemical cycles in a variety of natural and managed systems in the African Tropics. The hierarchical and interdisciplinary structure of the TropSOC database allows for linking a wide range of parameters and observations on soil and vegetation dynamics along with other supporting information that may also be measured at one or more levels of the hierarchy. TropSOC’s data marks a significant contribution to improve our understanding of the fate of biogeochemical cycles in dynamic and diverse tropical African (agro-)ecosystems. TropSOC v1.0 can be accessed through the supplementary material provided as part of this manuscript or as a separate download via the websites of the Congo Biogeochemistry observatory and the GFZ data repository where version updates to the database will be provided as the project develops.

Organic matter cycling along geochemical, geomorphic and disturbance gradients in forests and cropland of the African Tropics – Project TropSOC Database Version 1.0

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