“…This usually decreases the pH and produces CO 2 , while the release of organic acids further enhances the dissolution and hydrolysis of minerals by (Ochs et al, 1993;Welch and Ullman, 1993;Hinsinger, 1998). This, in turn, releases cations, such as Na + , K + , Ca 2+ , Mg 2+ , and Fe 3+ that are essential for plant growth (Warfvinge et al, 1993;Quideau et al, 1996;Dambrine et al, 1998;Reynolds et al, 2000;Williams et al, 2003;Moncoulon et al, 2004;Karyotis et al, 2005). As a consequence, climate, chemical weathering rates, nutrient levels, and vegetation communities are strongly interdependent variables.…”