Not sure what you mean by "green maps on the surface". Don't know what your weather was like in the spring - if it was warm, new growth occurred, and then there was a sudden drop in temperature to really cold again, that could have caused die back of the new growth on the tips.

Thank you very much for your response.

I mean, in some parts of the tree-top the ends of needles are brown, and as they are dense and close each other, they form brown plaques on the tree-top from a distance.

The weather in spring was similar to the rest of Europe - dry March and half of April, then heavy rains till the beginning of June. But falls in temperature were not dramatic. Can it be connected with replacement of the tree in March? I digged it out and put in a new, more sunny place.

Ah yes, it might well be that - if the tree was more than 2 years old, then damage to the water seeking roots would have taken place - best time to move a conifer is autumn.

Thank you very much for advice. I did it in spring, because some people recommend to move mediterranean plants in spring or at the end of summer, when the land is still warm enough.
Thank You.

Well, the soil is at its warmest in autumn, so September October here - if it gets cold earlier where you are, then you'd have to adjust the timing.