Wilderness of chopped up dead trees (6)
I believe the answer is:
desert
'wilderness' is the definition.
(thesaurus)
'chopped up dead trees' is the wordplay.
'chopped up' indicates an anagram.
'dead' becomes 'd'.
'd'+'trees'='dtrees'
'dtrees' is an anagram of 'DESERT'.
'of' is the link.
(Other definitions for desert that I've seen before include "Waterless area of land" , "Kalahari, e.g." , "Barren area" , "expanse of land without water" , "Abandon in wasteland" .)