“…High aluminum concentration induced by acid inputs was also reported in several experimental and field studies Larssen et al, 1998Larssen et al, , 1999Liao, Seip, & Larssen, 1997;Zhu, Jiang, & Ji, 2004). Many studies have shown that elevated concentrations of Al in soil water could cause potential damage to vegetation, while Ca and Mg could counteract this toxic effect (e.g., Anandi, Thangavel, & Subburam, 2002;Anderson, 1988;Gensemer & Playle, 1999;Leblanc & Loehle, 1993;Lydersen & Lofgren, 2002;Silva, Smyth, Israel, Raper, & Rufty, 2001;Yang, Cheng, & Abdullahi, 2001).…”