Abstract:

According to the sampling sites at Mt. Taishan during the second national soil investigation (1980's) of China, two groups of soil samples were  separately collected from Mt. Taishan in November 2008 and May 2009. The soil samples were analyzed according to the same analyzing methods of the 1980's. The results showed that compared with the 1980's, the pH of soil samples collected from the sites lower than Zhongtianmen did not have significant change, but the decrease of pH at the sites higher than Zhongtianmen was apparent. Also the exchangeable Al³⁺ and H⁺ had increased, and the base saturation(BS) had decreased in soil samples of all soil sampling sites compared with the data in the 1980's. This phenomenon indicated the trend of the soil acidification at different altitude was obvious. The results also showed that thepH of soil samples did not show significant change between November 2008 and May 2009. The exchangeable Al³⁺ and BS of soil samples showed much more change at the high altitude sites than the two indices at low altitude sites between November 2008 and May 2009, which implied that the soil acidification was not only related to soil type but also to the frequency and amount of acid precipitation. 

Key words: acid deposition; Mt. Taishan; soil acidification