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Gong Zhang, Guang-ming Zeng (email), Yi-min Jiang, Chun-yan Du, Guo-he Huang, Jia-mei Yao, Mei Zeng, Xi-lin Zhang, Wei Tan

Seasonal dry deposition and canopy leaching of base cations in a subtropical evergreen mixed forest, China

Zhang G., Zeng G.-m., Jiang Y.-m., Du C.-y., Huang G.-h., Yao J.-m., Zeng M., Zhang X.-l., Tan W. (2006). Seasonal dry deposition and canopy leaching of base cations in a subtropical evergreen mixed forest, China. Silva Fennica vol. 40 no. 3 article id 327. https://doi.org/10.14214/sf.327

Abstract

We evaluated the dry deposition and canopy leaching fluxes of base cations in the growing and the dormant seasons using the Na-ratio method based on the 4-year (2000–2003) monitoring data in Shaoshan subtropical evergreen mixed forest, China. The dry deposition of base cations in the growing seasons was lower than that in the dormant seasons, while the canopy leaching of base cations was higher in the growing seasons than that in the dormant seasons. The precipitation quantity and H+ significantly impacted the canopy leaching processes. The annual canopy leaching of K+, Ca2+ and Mg2+ accounted for 88, 46 and 38% of net throughfall flux, respectively. The canopy retention of proton (H+ and NH4+) is close to the canopy leaching of base cations calibrated by weak acids, indicating that the canopy cations leaching is neutralizing acid precipitation.

Keywords
bulk precipitation; throughfall; dry deposition; canopy exchange; base cations; evergreen forest

Author Info
  • Zhang, College of Environmental Science and Engineering, Hunan University, Hunan Province, Changsha 410082, P.R. China; Hunan Environmental Protection Bureau, Hunan Province, Changsha, 410076, P.R. China ORCID ID:
  • Zeng, College of Environmental Science and Engineering, Hunan University, Hunan Province, Changsha 410082, P.R. China ORCID ID:E-mail zgming@hnu.cn (email)
  • Jiang, College of Environmental Science and Engineering, Hunan University, Hunan Province, Changsha 410082, P.R. China; Hunan Environmental Protection Bureau, Hunan Province, Changsha, 410076, P.R. China ORCID ID:
  • Du, College of Environmental Science and Engineering, Hunan University, Hunan Province, Changsha 410082, P.R. China ORCID ID:
  • Huang, College of Environmental Science and Engineering, Hunan University, Hunan Province, Changsha 410082, P.R. China ORCID ID:
  • Yao, Xiangya Hospital, Central-south University, Hunan Province, Changsha 410008, P.R. China ORCID ID:
  • Zeng, College of Environmental Science and Engineering, Hunan University, Hunan Province, Changsha 410082, P.R. China ORCID ID:
  • Zhang, College of Environmental Science and Engineering, Hunan University, Hunan Province, Changsha 410082, P.R. China ORCID ID:
  • Tan, College of Environmental Science and Engineering, Hunan University, Hunan Province, Changsha 410082, P.R. China ORCID ID:

Received 9 September 2005 Accepted 23 May 2006 Published 31 December 2006

Available at https://doi.org/10.14214/sf.327 | Download PDF

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