Impacts of tropical cyclones on hydrochemistry of a subtropical forest

C. T. Chang, S. P. Hamburg, J. L. Hwong, N. H. Lin, M. L. Hsueh, M. C. Chen, Teng-Chiu Lin

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Tropical cyclones (typhoons/hurricanes) have major impacts on the biogeochemistry of forest ecosystems, but the stochastic nature and the long intervals between storms means that there are limited data on their effects. We characterised the impacts of 14 typhoons over six years on hydrochemistry of a subtropical forest plantation in Taiwan, a region experiencing frequent typhoons. Typhoons contributed 1/3 of the annual rainfall on average, but ranged from 4 to 55%. The stochastic nature of annual typhoon related precipitation poses a challenge with respect to managing the impacts of these extreme events. This challenge is exacerbated by the fact that typhoon-related rainfall is not significantly correlated with wind velocity, the current focus of weather forecasts. Thus, little advance warning is provided for the hydrological impacts of these storms.

The typhoons we studied contributed approximately one third of the annual input and output of most nutrients (except nitrogen) during an average 9.5 day yr-1 period, resulting in nutrient input/output rates an order of magnitude greater than during non-typhoon months. Nitrate output balanced input during the non-typhoon period, but during the typhoon period an average of 10 kg ha-1 yr-1 nitrate was lost. Streamwater chemistry exhibited similarly high variability during typhoon and non-typhoon periods and returned to pre-typhoon levels one to three weeks following each typhoon. The streamwater chemistry appears to be very resilient in response to typhoons, resulting in minimal loss of nutrients.

Original languageEnglish
Pages (from-to)3815-3826
Number of pages12
JournalHydrology and Earth System Sciences
Volume17
Issue number10
DOIs
Publication statusPublished - 2013 Oct 21

Fingerprint

hydrochemistry
typhoon
tropical cyclone
streamwater
nutrient
nitrate
rainfall
extreme event
biogeochemistry
hurricane
forest ecosystem
plantation
wind velocity
weather
nitrogen

ASJC Scopus subject areas

  • Water Science and Technology
  • Earth and Planetary Sciences (miscellaneous)

Cite this

Chang, C. T., Hamburg, S. P., Hwong, J. L., Lin, N. H., Hsueh, M. L., Chen, M. C., & Lin, T-C. (2013). Impacts of tropical cyclones on hydrochemistry of a subtropical forest. Hydrology and Earth System Sciences, 17(10), 3815-3826. https://doi.org/10.5194/hess-17-3815-2013

Impacts of tropical cyclones on hydrochemistry of a subtropical forest. / Chang, C. T.; Hamburg, S. P.; Hwong, J. L.; Lin, N. H.; Hsueh, M. L.; Chen, M. C.; Lin, Teng-Chiu.

In: Hydrology and Earth System Sciences, Vol. 17, No. 10, 21.10.2013, p. 3815-3826.

Research output: Contribution to journalArticle

Chang, CT, Hamburg, SP, Hwong, JL, Lin, NH, Hsueh, ML, Chen, MC & Lin, T-C 2013, 'Impacts of tropical cyclones on hydrochemistry of a subtropical forest', Hydrology and Earth System Sciences, vol. 17, no. 10, pp. 3815-3826. https://doi.org/10.5194/hess-17-3815-2013
Chang CT, Hamburg SP, Hwong JL, Lin NH, Hsueh ML, Chen MC et al. Impacts of tropical cyclones on hydrochemistry of a subtropical forest. Hydrology and Earth System Sciences. 2013 Oct 21;17(10):3815-3826. https://doi.org/10.5194/hess-17-3815-2013
Chang, C. T. ; Hamburg, S. P. ; Hwong, J. L. ; Lin, N. H. ; Hsueh, M. L. ; Chen, M. C. ; Lin, Teng-Chiu. / Impacts of tropical cyclones on hydrochemistry of a subtropical forest. In: Hydrology and Earth System Sciences. 2013 ; Vol. 17, No. 10. pp. 3815-3826.
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