Elsevier

Pedosphere

Volume 20, Issue 3, June 2010, Pages 399-408
Pedosphere

Soil Acidification in Response to Acid Deposition in Three Subtropical Forests of Subtropical China

https://doi.org/10.1016/S1002-0160(10)60029-XGet rights and content

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.

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  • Cited by (0)

    Supported by the National Natural Science Foundation of China (Nos. 30270282 and 40703030), the Key Project of the Chinese Ministry of Education (No. 704037), the Doctoral Scientific Research Foundation of Guilin University of Electronic Technology, China (No. Z20718), and the Guangxi Provincial Department of Education, China (No. 200707MS048).

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