Element budgets in a forested watershed in southern China: Estimation of a proton budget

摘要

We evaluated the element budgets in a forested watershed in Jiulianshan, southern China. The element input in bulk precipitation was characterized by high depositions of H~+, NH~+_4, Ca~2+, and SO~2- _4, i.e., 400, 351,299, and 876 eq/yr, respectively. The outputs of H~+, NH~+_4, and SO~2- _4 from the watershed were very low, while those of Ca~2+ and Mg~2+ were high, 712 and 960 eq/ha/yr, respectively.