Pro is in Fontainebleau initially surveying woodland (7)
I believe the answer is:
forests
'woodland' is the definition.
(forests are bits of woodland)
'pro is in fontainebleau initially surveying' is the wordplay.
'pro' becomes 'for' (I've seen this before).
'is in fontainebleau' becomes 'est' (I can't justify this - if you can you should give a lot more credence to this answer).
'initially' suggests taking the first letters.
The first letter of 'surveying' is 's'.
'for'+'est'+'s'='FORESTS'
Can you help me to learn more?
(Other definitions for forests that I've seen before include "Large, densely-wooded area" , "Large woods" , "Woodlands" , "Densely wooded areas" .)