The 〈0001〉axial channeling parameters, axial half-angle ψ1/2 and minimum yield xmin, of α-LiIO3 crystal have been measured by collimated MeV proton beam at different beam energies. Under the action of an electrostatic field along the c-direction of the crystal, the increase of channeling-backscattering yield from the surface I atoms, proportional to the duration of electrostatic field action, has been observed. The time-dependence of the amount of the random surface I atoms has been calculated quantitatively for different durations of electrostatic field action. The increase of the α-particle yield from proton induced 7Li(P,a)4He reaction-channeling with the duration of electrostatic field action has been observed as well.