Impacts of tropical cyclones on hydrochemistry of a subtropical forest

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Title:	Impacts of tropical cyclones on hydrochemistry of a subtropical forest
Authors:	林能暉;Chang, C. T.;Hamburg, S. P.;Hwong, J. L.;Lin, N. H.;Hsueh, M. L.;Chen, M. C.;Lin, T. C.
Contributors:	地球科學學院大氣科學學系
Keywords:	Biogeochemistry;Forest ecosystems;Hurricanes;Nutrients;Precipitation (Meteorology);Tropical cyclones;Typhoons;Weather forecasting;Wind speed
Date:	2013-10-21
Issue Date:	2026-04-21 13:46:15 (UTC+8)
Publisher:	European Geosciences Union;Katlenburg-Lindau: Copernicus Publications
Abstract:	摘要： 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. 出版者： Katlenburg-Lindau: Copernicus Publications 出版日期： 2013-10-07 出處： Hydrology and Earth System Sciences, 2013-10, Vol.17 (10), p.3815-3826 資源來源： Agricultural & Environmental Science Collection 版權： COPYRIGHT 2013 Copernicus GmbH 版權： Copyright Copernicus GmbH 2013 識別號： ISSN: 1607-7938 識別號： ISSN: 1027-5606 識別號： EISSN: 1607-7938 識別號： DOI: 10.5194/hess-17-3815-2013
Appears in Collections:	[Department of Atmospheric Sciences] journal & Dissertation

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