We don't have synonyms for coppices yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are coppice, coppiced and coppies.
(n) :
A grove of small growth; a thicket of brushwood; a wood cut at certain times for fuel or other purposes, typically managed to promote growth and ensure a reliable supply of timber. See copse.
(v) :
(transitive) To manage (a wooded area) sustainably, as a coppice, by periodically cutting back woody plants to promote new growth.
(n) :
A grove of small growth; a thicket of brushwood; a wood cut at certain times for fuel or other purposes, typically managed to promote growth and ensure a reliable supply of timber. See copse.
(v) :
(transitive) To manage (a wooded area) sustainably, as a coppice, by periodically cutting back woody plants to promote new growth.