Scheme adopted by youth for region of the north (7)
I believe the answer is:
lapland
'region of the north' is the definition.
(region near the North Pole)
'scheme adopted by youth' is the wordplay.
'scheme' becomes 'plan' (synonyms).
'adopted by' indicates putting letters inside (I've seen this in other clues).
'youth' becomes 'lad' (lad means a young man).
'plan' put within 'lad' is 'LAPLAND'.
'for' acts as a link.
(Other definitions for lapland that I've seen before include "Finnish province" , "North Scandinavian region associated with Santa Claus" , "part of Europe" , "Santa's home" , "Region of northern Scandinavia and Russia" .)