![]() ![]() The Special Issue will include original articles, case studies, and critical review papers covering the following topics: This Special Issue aims to advance our current understanding of nitrogen cycling and carbon–nitrogen interactions in permafrost soils. Since nitrogen regulates key components of the carbon cycle and mineral N forms are the substrate for the strong greenhouse gas nitrous oxide, the study of the N cycle and pools in Arctic ecosystem should be a key research priority. Moreover, the fate of this N is largely unknown. While carbon dynamics in permafrost regions have been widely studied, much less attention has been paid to the fact that the Arctic also holds significant amounts of nitrogen in its soils. Warming and permafrost thawing in the Arctic, Antarctic, and alpine regions is one of the potential tipping points for climate breakdown because it increases the risk of releasing the vast carbon and nitrogen reserves stored in the permafrost soils in the form of the greenhouse gases. Climate change is causing the most profound changes in northern latitudes, where the temperature increase has been predicted to be largest. ![]()
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