Water, Air, and Soil Pollution

, Volume 190, Issue 1, pp 171–181

Input–Output Budgets for Inorganic Nitrogen Under Acid Rain in a Subtropical Evergreen Mixed Forest in Central-South China

  • C. Y. Du
  • G. M. Zeng
  • G. Zhang
  • L. Tang
  • X. D. Li
  • D. L. Huang
  • L. Huang
  • Y. M. Jiang
Article

DOI: 10.1007/s11270-007-9590-y

Cite this article as:
Du, C.Y., Zeng, G.M., Zhang, G. et al. Water Air Soil Pollut (2008) 190: 171. doi:10.1007/s11270-007-9590-y

Abstract

Inorganic nitrogen deposition and leaching in stream water were monitored from January, 2001 to December, 2004 in a subtropical evergreen mixed forest in central-south China. The seasonal concentration and flux of inorganic nitrogen in bulk precipitation and stream water, seasonal mean net retention of nitrogen and net flux of H+ transformed by nitrogen were estimated and quantified in Shaoshan forest. The research results show that the correlation coefficient of fluxes between bulk precipitation and stream water is significant, with a coefficient 0.916 at the 0.01 level. Mean fluxes of inorganic nitrogen input are 2.62 g m−2 a−1 and 0.516 g m−2 a−1 in form of bulk precipitation and dry deposition respectively, and output in stream water is around 0.22 g m−2 a−1, which indicates that most of nitrogen input is reserved in the forest. Net retention of nitrogen reaches 2.916 g m−2 a−1, just higher than other study plots over the world. Along with the translating of nitrogen (\({\text{NH}}_4^ + - {\text{N}}\) and \({\text{NO}}_3^ - - {\text{N}}\)), H+ is imported to the forest ecosystem at the same time. At our study plots, net flux of H+ transformed by nitrogen is about 73.57 mmol m−2 a−1. The positive value suggests that Shaoshan forest is still a finer buffering system to nitrogen deposition and it is far from nitrogen saturation in spite of the high nitrogen deposition.

Keywords

ConcentrationFluxInorganic nitrogenInput–outputSaturation

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • C. Y. Du
    • 1
  • G. M. Zeng
    • 1
  • G. Zhang
    • 1
    • 2
  • L. Tang
    • 1
  • X. D. Li
    • 1
  • D. L. Huang
    • 1
  • L. Huang
    • 1
  • Y. M. Jiang
    • 2
  1. 1.College of Environmental Science and EngineeringHunan UniversityChangshaPeople’s Republic of China
  2. 2.Hunan Environmental Protection BureauChangshaPeople’s Republic of China