FOR 562: Dynamics of Soil Processes under Extreme Meteorological Boundary Conditions

考虑到气候情景，我们预计未来极端气象边界条件的频率会越来越高，导致土壤干燥/复湿和冻结/融化的频率更高。后者可能在海拔较高的地点特别相关。气象边界条件对土壤的这种无规律、不同强度的剧烈变化，对土壤中C、N和S周转的影响明显比人们想象的要大。我们对土壤过程的这种条件的机制和相关性的了解非常有限。造成这种情况的原因之一是缺乏实地实验。

Given the climate scenarios, we expect in future an increasing frequency of extreme meteorological boundary conditions that result in a higher frequency of drying/rewetting and freezing/thawing of soils. The latter might be especially relevant in higher elevation sites. Such drastic changes of the meteorological boundary conditions to soils, which occur irregularly and with varying intensity are obviously influencing the turnover of C, N and S in soils to a larger extend than previously thought. Our knowledge about the mechanisms and relevance of such conditions for soil processes is very limited. One reason for that is the lack of field experiments.