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A method of quantitatively calculating amount of allochthonous organic carbon in lake sediments

机译：一种定量计算湖泊沉积物中异源有机碳量的方法

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摘要

TOTAL organic matter (TOM) or total organic carbon (TOC) is often treated as an important indicator of lake environment. As a matter of fact, TOC is of multi-origin, and can simply be divided into two parts: autochthonous and allochthonous organic carbon. The autochthonous organic carbon is mainly controlled by the production of the plankton of lake itself; and the allochthonous one by climate and environment in the catchment area, e. g. more precipitation and runoff and densely developed vegetationwill give rise to more allochthonous organic components in the lake sediments. Therefore, the amount of allochthonous organic carbon is a more effective proxy for climate and environment, and it can reflect the past precipitation to a certain degree. However, the amount of allochthonous organic carbon cannot be directly measured. Thus how to quantitatively calculate it has been a problem to be resolved.
机译：总有机物（TOM）或总有机碳（TOC）通常被视为湖泊环境的重要指标。实际上，TOC具有多种来源，可以简单地分为两部分：自生有机碳和异源有机碳。土生有机碳主要受湖泊本身浮游生物产量的控制。流域内气候和环境的异源体，e。 G。更多的降水和径流以及茂密的植被将在湖泊沉积物中产生更多的异源有机成分。因此，异源有机碳的量可以更有效地替代气候和环境，并且可以在一定程度上反映过去的降水。然而，不能直接测量异源有机碳的量。因此，如何定量地计算已经成为需要解决的问题。

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