Here is the final ten shortlist.
http://www.ahrc.ac.uk/favouritenaturebooks/

Some excellent choices including Nan Shepherd's Living Mountain and Chris Packham's Finger's in the Sparkle Jar. Was delighted to see the Selected Poems by John Clare - a hitherto under-rated 19th century poet.

All nature has a feeling: woods, fields, brooks
Are life eternal: and in silence they
Speak happiness beyond the reach of books ....