Soil erosion is the removal of the top soil layer. Soil erosion is controlled by precipitation (e.g. rainfall) and wind action. Continuous water flow on soil surface supports microorganisms to perform biogeochemical cycles. The phenonmenon is primarlity controlled governed at the iterface of geosphere (soil) and hydrosphere (water).
On the other hand, atmosphere (layers of gases), biosphere (living organisms), cryosphere (frozen water) are not directly related to soil erosion.
Heat releasing reactions are called Exothermic reactions and Endothermic reactions absorb/utilize heat making their surrounding cold, so they rather absorb heat rather than release cold.