Depth patterns of δ¹³C and δ¹⁵N values in peatlands are used to reconstruct their environmental history, e.g. their hydrology, temperature changes and degradation. However, the suitability of δ¹³C and δ¹⁵N as proxies for environmental reconstructions needs to be verified by studies in a diverse range of environments. We present a study on the influence of aeolian deposits on δ¹³C and δ¹⁵N values in peatlands in Iceland. Large areas in Iceland comprise highly active aeolian environments due to tephra from volcanic eruptions, and material from eroding drylands. The study is a first step toward assessing if depth profiles of δ¹³C and δ¹⁵N values can provide insight into the environmental history of peatlands in aeolian environments. We compare δ¹³C and δ¹⁵N values with several conventional proxies of decomposition (dry bulk density, C/N ratio and two ratios derived from ¹³C NMR spectra). We also interpret variations in δ¹³C and δ¹⁵N values in relation to the pedogenic minerals allophane and ferrihydrite and total mineral content. The complexity of depth trends of δ¹³C and δ¹⁵N values increases with proximity to source areas of windborne material. Particularly, there are turning points adjacent to major tephra layers. These patterns appear to be related to the influence of the volcanic deposits on factors like hydrology and fertility of the peatlands, microbial activity and vegetation composition. Depth trends of δ¹³C and δ¹⁵N values in peatlands of aeolian environments need to be interpreted in relation to other proxies reflecting the organic matter chemistry, and mineral soil constituents.

^{泥炭地中δ 13} C 和δ ¹⁵ N 值的深度模式用于重建其环境历史，例如水文、温度变化和退化。^{然而，δ 13} C 和δ ¹⁵ N 作为环境重建代理的适用性需要通过各种环境中的研究来验证。我们研究了风成沉积物对冰岛泥炭地 δ ¹³ C 和 δ ¹⁵ N 值的影响。冰岛的大片地区由火山喷发的火山灰和侵蚀的旱地物质造成的高度活跃的风成环境组成。^{这项研究是评估 δ 13} C 和 δ ¹⁵ N 值的深度剖面是否可以深入了解风成环境中泥炭地的环境历史的第一步。我们将 δ ¹³ C 和 δ ¹⁵ N 值与几种传统的分解指标（干堆积密度、C/N 比和源自¹³ C NMR 谱的两个比值）进行比较。我们还解释了 δ ¹³ C 和 δ ¹⁵ N 值与成土矿物水铝英石和水铁矿以及总矿物含量相关的变化。^{δ 13} C 和δ ¹⁵ N 值的深度趋势的复杂性随着接近风载物质源区而增加。特别是，在主要火山灰层附近存在转折点。这些模式似乎与火山沉积物对泥炭地水文和肥力、微生物活动和植被组成等因素的影响有关。^{风成环境泥炭地中 δ 13} C 和 δ ¹⁵ N 值的深度趋势需要结合反映有机质化学和矿质土壤成分的其他指标来解释。