Pedosphere 20(3): 399--408, 2010
ISSN 1002-0160/CN 32-1315/P
©2010 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Soil acidification in response to acid deposition in three subtropical forests of subtropical China |
LIU Ke-Hui1,2, FANG Yun-Ting3, YU Fang-Ming4, LIU Qiang5, LI Fu-Rong1 and PENG Shao-Lin 1 |
1 State Key Laboratory of Biocontrol, School of Life Science, Sun Yat-Sen University, Guangzhou 510275 (China);
2 College of Applied Science and Technology, Guilin University of Electronic Technology, Guilin 541004 (China);
3 Dinghushan Forest Ecosystem Research Station, South China Botanical Garden, Chinese Academy of Sciences, Dinghu, Zhaoqing, 526070 (China);
4 College of Resource and Environment, Guangxi Normal University, Guilin 541004 (China);
5 Department of Biology, Hainan Normal University, Haikou 571158 (China) |
| ABSTRACT |
| Long-term changes in soil pH, the current status of soil acidification, and the response of bulk soil and soil water pH to experimental nitrogen addition under three subtropical forests were investigated in Dinghushan Biosphere Reserve of subtropical China. The results showed that the mineral soil pH at 0-20 cm depth declined significantly from 4.60-4.75 in 1980s to 3.84-4.02 in 2005. Nitrogen addition resulted in the decrease of pH in both bulk soil and soil water collected at 20-cm depth. The rapid decline of soil pH was attributed to long-term high atmospheric acid deposition (nitrogen and sulphur) therein. The forest at earlier succession stage with originally higher soil pH appeared to be more vulnerable to acid deposition than that at later succession stage with originally low soil pH. |
| Key Words: forest succession, nitrogen addition, soil pH |
| Citation: Liu, K. H., Fang, Y. T., Yu, F. M., Liu, Q., Li, F. R. and Peng, S. L. 2010. Soil acidification in response to acid deposition in three subtropical forests of subtropical China. Pedosphere. 20(3): 399-408. |
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