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湿脚:开发硫同位素来源方法,以确定湿地居民

Angela L Lamb¹, Carolyn A Chenery¹, Richard Madgwick²

¹National Environmental Isotope Facility, British Geological Survey, Keyworth, Nottingham NG12 5GG, UK.

Royal Society open science

|October 13, 2023

概括

稳定的硫同位素,以前在低值被忽视,现在可以识别湿地居民. 这项研究揭示了硫同位素数据中的独特湿地特征,适用于考古学和古生态学研究.

科学领域:

地质化学地质化学
考古学的考古学
古生态学古生态学

背景情况:

硫的稳定同位素被用来确定海洋的近距离和相互作用.
在考古学和古生态学中,硫同位素的应用仅限于高同位素值 (>14‰),低值未被充分探索.
空气污染影响了现代景观,影响了硫同位素基线,并引起了人们对现代基于植被的硫地图可靠性的担忧.

研究的目的:

探索低和负硫同位素值在识别湿地居民方面的潜力.
为了测试这个假设,不透的土支湿地产生明显的低硫同位素值由于基质和氧化还原条件.
建立一种可靠的方法来识别考古人类和在湿地养的动物,使用硫同位素分析.

主要方法:

使用现代工厂对目标区域进行初级地图绘制,以确定具有自然负硫值的区域.
在现代和考古动物中分析硫同位素组成.
研究不透粘土和氧化还原条件对湿地生态系统中硫同位素值的影响.

主要成果:

现代植物绘制成功地确定了自然负硫同位素值的区域,表明了独特的湿地特征.
发现这些独特的硫同位素成分在现代和考古动物中都被转移到食物链中.
低和负硫同位素值被证实是湿地环境和居民的可靠指标.

结论:

以前未被诊断的低和负硫同位素值为在考古和古生态背景下识别湿地居民提供了重要的潜力.
这项研究建立了一种新的方法来解释硫同位素数据,将其应用范围扩大到海洋附近之外.
这些发现为了解过去人类和动物在湿地环境中的生活方式提供了一个新的工具.

关键词:

这是一个考古学考古学.生物圈是生物圈的组成部分.这些同位素是同位素.来源来源来源来源来源来源来源来源来源来源硫是一种硫.湿地湿地是一个湿地.

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