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Preliminary biogeochemical investigations of small rivers in the Franconian Alb to lay foundations for detailed investigations of turnover and origin of high carbon in the Main River system

对法兰克阿尔布小河流进行初步生物地球化学调查，为详细调查美因河流域高碳周转和来源奠定基础

基本信息

批准号：
220512116
负责人：
Professor Johannes Barth, Ph.D.
金额：
--
依托单位：
Lehrstuhl für Angewandte Geologie
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2012
资助国家：
德国
起止时间：
2011-12-31 至 2014-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/220512116?language=en
关键词：
Preliminary biogeochemical investigations small rivers

项目摘要

Investigations of the carbon cycle in river systems are important to outline interactions between the terrestrial biosphere and the atmosphere. They also allow quantification of carbon fluxes to larger river systems and ultimately the ocean. This helps to constrain terrestrial carbon cycles that in turn have strong influences on the atmospheric CO2 through providing sources and sinks. Flux rates of carbon by rivers can also help to provide boundary parameters for climate models. In this context, rivers act as important integral information sources because they are key links between terrestrial systems and oceans. On the other hand, most rivers actively release considerable amounts of carbon to the atmosphere in the form of CO2. Nonetheless, its sources from soils, groundwater or river internal turnover are poorly defined. These aspects are planned to be investigated in small river systems of less than 12 m3 s-1 discharge in the Franconian Alb. Such small stream investigations holds promise to better quantify processes and mechanisms including geological, agricultural and urban influences on riverine carbon cycles. This work opens the opportunity to start biogeochemical investigations on the Main River System that is one of the major tributairies of the Rhine, one of the major waterways in Europe. It is placed in international context by allowing comparison to work on other river systems in various countries.

对河流系统中碳循环的调查对于概述陆地生物圈与大气之间的相互作用十分重要。它们还可以量化流向较大河流系统并最终流向海洋的碳通量。这有助于限制陆地碳循环，反过来又通过提供源和汇对大气CO2产生强烈影响。河流的碳通量率也有助于为气候模型提供边界参数。在这方面，河流是重要的综合信息来源，因为它们是陆地系统与海洋之间的关键联系。另一方面，大多数河流以二氧化碳的形式向大气中释放大量的碳。然而，其来自土壤、地下水或河流内部周转的来源却没有明确界定。这些方面的计划进行调查，在小河流系统小于12立方米的S-1排放在弗兰肯Alb.这样的小流调查有望更好地量化过程和机制，包括地质，农业和城市对河流碳循环的影响。这项工作开启了对欧洲主要水道之一的莱茵河主要支流之一的主要河流系统进行地球化学调查的机会。它被放置在国际范围内，允许比较在不同国家的其他河流系统的工作。