ИСТИНА

Climate smart agriculture, combining reaching food security and mitigation of climate change, is urgently needed to include soil carbon sequestration option. Model predictions based on assessment interactive effect of changes in different management practices revealed possibility to delineate regions with different sensitivity to climate and management changes. For all the Russian long-term experiments/treatments tested ground NPP input is sufficient for maintaining constant SOM stocks and providing additional C gain based on optimal land-use. If C input in a long-term was inadequate to maintain SOC, it leads to a consistent decrease of active C pools. Preferable effect of agronomic practices on active C pools makes it highly yield-dependent. Agricultural soils are sensitive to small changes of extreme year’s pattern with more expressed loss of the initial C stock under intensive management systems. Reduced yield variability leading to increased C stock.