Data showing how stable carbon isotopes reveal soil-stream DIC linkages in contrasting headwater catchments

Large CO2 evasion to the atmosphere occurs as dissolved inorganic carbon (DIC) is transported from soils to streams. While this physical process has been the focus of multiple studies, less is known about the underlying biogeochemical transformations that accompany this transfer of C from soils to streams. Here we used patterns in stream water and groundwater δ13C-DIC values within three headwater catchments with contrasting land cover to identify the sources and processes regulating DIC during its transport.

The study was conducted within three headwater catchments representing contrasting land covers. Two of the catchments, Svartberget (SVB) and Degerö Stormyr (DEG), are located in northern Sweden within the Svartberget Experimental Forests (64°14′N, 19°46′E). The third catchment, Skogaryd (SKOG), is located in south-western Sweden within the Skogaryd Research Catchment (58°23′N, 12°09′E).

See "Stable Carbon Isotopes Reveal Soil-Stream DIC Linkages in Contrasting Headwater Catchments" by by Campeau (2018) for further information.

The dataset was originally published in DiVA and moved to SND in 2024.

当溶解无机碳（dissolved inorganic carbon, DIC）从土壤输送至溪流时，会发生大量二氧化碳向大气的逸散。尽管这一物理过程已成为多项研究的关注重点，但伴随碳从土壤向溪流迁移的内在生物地球化学转化过程，目前的认知仍较为匮乏。本研究选取3个土地覆盖类型迥异的源头集水区，通过分析溪流水与地下水的δ13C-DIC值特征，明确了DIC输送过程中调控其动态的来源与作用机制。

本研究的试验区域为3个土地覆盖类型各异的源头集水区。其中两个集水区——斯瓦特贝里（Svartberget, SVB）与德格罗·斯托米尔（Degerö Stormyr, DEG）——位于瑞典北部的斯瓦特贝里实验林区（64°14′N，19°46′E）。第三个集水区斯科加里德（Skogaryd, SKOG）则地处瑞典西南部的斯科加里德研究集水区（58°23′N，12°09′E）。

详细信息可参阅Campeau（2018）发表的论文《稳定碳同位素揭示不同类型源头集水区的土壤-溪流溶解无机碳关联》（"Stable Carbon Isotopes Reveal Soil-Stream DIC Linkages in Contrasting Headwater Catchments"）。

本数据集最初发布于DiVA数据库，并于2024年迁移至SND数据库。