Subarctic permafrost peatlands cover extensive areas and store large amounts of soil organic carbon that can be remobilized as active layer deepening and thermokarst formation increase in a future warmer climate. Better knowledge of ground thermal variability within these ecosystems is important for understanding future landscape development and permafrost carbon feedbacks. In a peat plateau complex in Tavvavuoma, northern Sweden, ground temperatures and snow depth have been monitored in six different landscape units: on a peat plateau, in a depression within a peat plateau, along a peat plateau edge (close to a thermokarst lake), at a thermokarst lake shoreline, in a thermokarst lake and in a fen. Permafrost is present in all three peat plateau landscape units, and mean annual ground temperature (MAGT) in the central parts of the peat plateau is −0.3°C at 2 m depth. In the three low‐lying wetter or saturated landscape units (along the thermokarst lake shoreline, in the lake and the fen) taliks are present and MAGT at 1 m depth is 1.0–2.7°C. Topographical differences between the elevated and low‐lying units affect both local snow depth and soil moisture, and are important for ground thermal patterns in this landscape. Permafrost exists in landscape units with a shallow mean December–April snow depth ( 40 cm mostly result in absence of permafrost.

中文翻译：

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亚北极泥炭高原景观中的地温和雪深变化

亚北极永久冻土泥炭地覆盖了广阔的区域并储存了大量的土壤有机碳，这些有机碳可以在未来变暖的气候中随着活动层加深和热岩溶形成的增加而重新动员。更好地了解这些生态系统内的地面热变化对于理解未来的景观发展和永久冻土碳反馈非常重要。在瑞典北部 Tavvavuoma 的泥炭高原综合体中，在六个不同的景观单元中监测了地面温度和雪深：泥炭高原、泥炭高原内的洼地、泥炭高原边缘（靠近热喀斯特湖） ，在热岩溶湖岸线，在热岩溶湖和沼泽中。永久冻土存在于所有三个泥炭高原景观单元中，泥炭高原中部的年平均地温 (MAGT) 在 2 m 深度为 -0.3°C。在三个低洼湿润或饱和的景观单元（沿热岩溶湖岸线、湖中和沼泽）中存在 taliks，1 m 深度处的 MAGT 为 1.0-2.7°C。高地和低地单元之间的地形差异会影响当地的积雪深度和土壤湿度，并且对于该景观中的地面热模式很重要。永久冻土存在于 12 月至 4 月平均雪深较浅的景观单元中（40 厘米主要导致没有永久冻土。高地和低地单元之间的地形差异会影响当地的积雪深度和土壤湿度，并且对于该景观中的地面热模式很重要。永久冻土存在于 12 月至 4 月平均雪深较浅的景观单元中（40 厘米主要导致没有永久冻土。高地和低地单元之间的地形差异会影响当地的积雪深度和土壤湿度，并且对于该景观中的地面热模式很重要。永久冻土存在于 12 月至 4 月平均雪深较浅的景观单元中（40 厘米主要导致没有永久冻土。