Water resource assassin Chen Hsin-hsiung, a professor with National Taiwan University's School of Forestry and Resource Conservation, estimates that Taiwan grows 70 % of its betel-nut crop on slopeland, versus only 30 % on the plains.
而山坡地上用大型推土機連根剷除林地或果樹、「企業化經營」的栽植手法，也令人怵目驚心。水資源殺手台大森林系教授陳信雄估計，全台檳榔種植在山坡地的佔 7 成，位於平地的約 3 成。