Study with hesitation in landscape (7)
I believe the answer is:
terrain
'landscape' is the definition.
(I've seen this before)
'study with hesitation' is the wordplay.
'study' becomes 'train' (training is a kind of studying).
'with' is an insertion indicator.
'hesitation' becomes 'er' (sound made while hesitating - um, er).
'train' enclosing 'er' is 'TERRAIN'.
'in' is the link.
(Other definitions for terrain that I've seen before include "Physical features of a tract of land" , "Tract of land with particular character" , "Physical feature of a stretch of ground" , "Piece of ground" , "Land of a particular type" .)