Understanding paper conservationists import pine (7)
I believe the answer is:
insight
'understanding' is the definition.
(insight is a kind of understanding)
'paper conservationists import pine' is the wordplay.
'paper' becomes 'i' (UK newspaper).
'conservationists' becomes 'nt' (abbreviation for National Trust).
'import' indicates putting letters inside.
'pine' becomes 'sigh' (I can't justify this - if you can you should believe this answer much more).
'nt' going around 'sigh' is 'nsight'.
'i'+'nsight'='INSIGHT'
Can you help me to learn more?
(Other definitions for insight that I've seen before include "Things I have understanding of" , "Enlightenment" , "vision" , "The ability to perceive the true nature of something" , "Visible" .)