Cropping leads to loss of soil organic matter: How can we prevent it?

Soil organic matter(SOM),which associates carbon(C)to key plant nutrients,has been stored in soil for thousands of years.Scientists have long recognised its positive impact on key environmental functions such as food production and climate regulation.As soon as a virgin land(forest or grassland)is cultivated,there is a tendency for the soil to lose its SOM,and we still largely misunderstand the underlying mechanisms,leading to inappropriate decisions being taken to fight soil,climate,and overall ecosystem degradation.