1) Infertile stretch of land 2) Pine plains 3) Scrubby tracts 4) Scrubby wastelands 5) Sparsely vegetated expanses 6) Wastelands Found on https://www.crosswordclues.com/clue/barrens
(from the article `conservation`) The original habitats locally called barrens constituted a visually striking and ecologically special habitat. Restoring them was a particular ... Found on http://www.britannica.com/eb/a-z/b/24