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首页> 外文期刊>Journal of Paleolimnology >The need to correct for the Suess effect in the application of δ13C in sediment of autotrophic Lake Tanganyika, as a productivity proxy in the Anthropocene
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The need to correct for the Suess effect in the application of δ13C in sediment of autotrophic Lake Tanganyika, as a productivity proxy in the Anthropocene

机译：需要修正δ13 C在自养坦Tang尼喀湖沉积物中的Suess效应，作为人类世的生产力代表

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摘要

The change in dissolved inorganic δ13C in the ocean resulting from the change in δ13C in atmospheric CO2 owing to anthropogenic activities (the Suess effect) is well known. The need to correct for the Suess effect when applying δ13C in organic matter in lacustrine sediment deposited during the anthropocene as a productivity proxy, is widely although not universally acknowledged. This paper reviews conceptions about the Suess effect in lacustrine δ13Corg and methods to adjust for the Suess effect when δ13Corg is used to infer recent changes in aquatic productivity. Lake Tanganyika is used as an example to illustrate the necessity of the correction. When the Suess effect is not considered, interpretations of sediment core data can result that are opposite to those achieved with the correction applied, as is here shown in Lake Tanganyika and in other lakes. A new method to correct for the Suess effect is provided which has the advantage of being applicable to data for a larger period (1700–2000) than methods currently available. In addition, Lake Tanganyika is shown to be a net sink for CO2.
机译：众所周知，由于人为活动（Suess效应），大气中二氧化碳中δ13 C的变化导致海洋中溶解的无机δ13 C的变化。尽管没有得到普遍承认，但在人类世期间沉积的湖相沉积物中的有机质中应用δ13C作为有机物时，需要校正Suess效应。本文回顾了关于湖泊δ13 Corg 的Suess效应的概念，以及当δ13 Corg 用于推断水生生产力的最新变化时调整Suess效应的方法。以坦any尼喀湖为例，说明纠正的必要性。如果不考虑Suess效应，那么对沉积物核心数据的解释可能与采用校正方法所获得的解释相反，如坦any尼喀湖和其他湖泊所示。提供了一种校正Suess效应的新方法，该方法的优点是与当前可用方法相比，在更大的时期（1700–2000年）中适用于数据。此外，坦Tang尼喀湖被证明是二氧化碳的净汇。

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