Throughfall patterns in a subtropical rain forest of northeastern Taiwan

Teng Chiu Lin, Steven P. Hamburg, Hen Biau King, Yue Joe Hsia

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

Throughfall chemistry of a subtropical rain forest in Taiwan was examined for 3 yr to understand patterns of nutrient inputs to the forests of this region. Annual throughfall fluxes for NH4/+, NO3/-, and SO4/2- (89, 28, and 83 mmol/m2/yr, respectively) were close to the levels of the most polluted areas in the temperate region. The lack of major emission sources near the study site indicates that most of the pollutants were regional and/or international in origin. High rates of cation leaching from the forest canopy were evident and the pattern is similar to that seen in heavily polluted temperate forests. Typhoons played a central role in the hydrology of the study forest with eight typhoons contributing 26% of the total rainfall in 320 h over the three years monitored. This typhoon input represented 20% of the total precipitation flux of the ions found in seasalt aerosols but less than 10% of anthropogenically enriched ions. Canopy leaching was an important source of base cations in throughfall and NO3/- was retained in the canopy. Using the Na-ratio method the contribution of dry deposition relative to precipitation input was estimated to be 40% in the summer and 10% in the winter. The contribution of dry deposition to total deposition is small relative to many temperate forests and might result from the lack of long dry periods between precipitation events. Net throughfall flux was negatively related to precipitation concentration for H+, NH4/+, NO3/- and SO4/2-, suggesting that passive movement was important in characterizing throughfall dynamics.

Original languageEnglish
Pages (from-to)1186-1193
Number of pages8
JournalJournal of Environmental Quality
Volume29
Issue number4
DOIs
Publication statusPublished - 2000 Jan 1

Fingerprint

throughfall
Rain
Fluxes
Leaching
Positive ions
dry deposition
temperate forest
Hydrology
Ions
cation
Nutrients
Aerosols
leaching
canopy
ion
typhoon
forest canopy
hydrology
rain forest
aerosol

ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution
  • Management, Monitoring, Policy and Law

Cite this

Throughfall patterns in a subtropical rain forest of northeastern Taiwan. / Lin, Teng Chiu; Hamburg, Steven P.; King, Hen Biau; Hsia, Yue Joe.

In: Journal of Environmental Quality, Vol. 29, No. 4, 01.01.2000, p. 1186-1193.

Research output: Contribution to journalArticle

Lin, Teng Chiu ; Hamburg, Steven P. ; King, Hen Biau ; Hsia, Yue Joe. / Throughfall patterns in a subtropical rain forest of northeastern Taiwan. In: Journal of Environmental Quality. 2000 ; Vol. 29, No. 4. pp. 1186-1193.
@article{27f9e9f33e424177aa65266584febba6,
title = "Throughfall patterns in a subtropical rain forest of northeastern Taiwan",
abstract = "Throughfall chemistry of a subtropical rain forest in Taiwan was examined for 3 yr to understand patterns of nutrient inputs to the forests of this region. Annual throughfall fluxes for NH4/+, NO3/-, and SO4/2- (89, 28, and 83 mmol/m2/yr, respectively) were close to the levels of the most polluted areas in the temperate region. The lack of major emission sources near the study site indicates that most of the pollutants were regional and/or international in origin. High rates of cation leaching from the forest canopy were evident and the pattern is similar to that seen in heavily polluted temperate forests. Typhoons played a central role in the hydrology of the study forest with eight typhoons contributing 26{\%} of the total rainfall in 320 h over the three years monitored. This typhoon input represented 20{\%} of the total precipitation flux of the ions found in seasalt aerosols but less than 10{\%} of anthropogenically enriched ions. Canopy leaching was an important source of base cations in throughfall and NO3/- was retained in the canopy. Using the Na-ratio method the contribution of dry deposition relative to precipitation input was estimated to be 40{\%} in the summer and 10{\%} in the winter. The contribution of dry deposition to total deposition is small relative to many temperate forests and might result from the lack of long dry periods between precipitation events. Net throughfall flux was negatively related to precipitation concentration for H+, NH4/+, NO3/- and SO4/2-, suggesting that passive movement was important in characterizing throughfall dynamics.",
author = "Lin, {Teng Chiu} and Hamburg, {Steven P.} and King, {Hen Biau} and Hsia, {Yue Joe}",
year = "2000",
month = "1",
day = "1",
doi = "10.2134/jeq2000.00472425002900040022x",
language = "English",
volume = "29",
pages = "1186--1193",
journal = "Journal of Environmental Quality",
issn = "0047-2425",
publisher = "ASA/CSSA/SSSA",
number = "4",

}

TY - JOUR

T1 - Throughfall patterns in a subtropical rain forest of northeastern Taiwan

AU - Lin, Teng Chiu

AU - Hamburg, Steven P.

AU - King, Hen Biau

AU - Hsia, Yue Joe

PY - 2000/1/1

Y1 - 2000/1/1

N2 - Throughfall chemistry of a subtropical rain forest in Taiwan was examined for 3 yr to understand patterns of nutrient inputs to the forests of this region. Annual throughfall fluxes for NH4/+, NO3/-, and SO4/2- (89, 28, and 83 mmol/m2/yr, respectively) were close to the levels of the most polluted areas in the temperate region. The lack of major emission sources near the study site indicates that most of the pollutants were regional and/or international in origin. High rates of cation leaching from the forest canopy were evident and the pattern is similar to that seen in heavily polluted temperate forests. Typhoons played a central role in the hydrology of the study forest with eight typhoons contributing 26% of the total rainfall in 320 h over the three years monitored. This typhoon input represented 20% of the total precipitation flux of the ions found in seasalt aerosols but less than 10% of anthropogenically enriched ions. Canopy leaching was an important source of base cations in throughfall and NO3/- was retained in the canopy. Using the Na-ratio method the contribution of dry deposition relative to precipitation input was estimated to be 40% in the summer and 10% in the winter. The contribution of dry deposition to total deposition is small relative to many temperate forests and might result from the lack of long dry periods between precipitation events. Net throughfall flux was negatively related to precipitation concentration for H+, NH4/+, NO3/- and SO4/2-, suggesting that passive movement was important in characterizing throughfall dynamics.

AB - Throughfall chemistry of a subtropical rain forest in Taiwan was examined for 3 yr to understand patterns of nutrient inputs to the forests of this region. Annual throughfall fluxes for NH4/+, NO3/-, and SO4/2- (89, 28, and 83 mmol/m2/yr, respectively) were close to the levels of the most polluted areas in the temperate region. The lack of major emission sources near the study site indicates that most of the pollutants were regional and/or international in origin. High rates of cation leaching from the forest canopy were evident and the pattern is similar to that seen in heavily polluted temperate forests. Typhoons played a central role in the hydrology of the study forest with eight typhoons contributing 26% of the total rainfall in 320 h over the three years monitored. This typhoon input represented 20% of the total precipitation flux of the ions found in seasalt aerosols but less than 10% of anthropogenically enriched ions. Canopy leaching was an important source of base cations in throughfall and NO3/- was retained in the canopy. Using the Na-ratio method the contribution of dry deposition relative to precipitation input was estimated to be 40% in the summer and 10% in the winter. The contribution of dry deposition to total deposition is small relative to many temperate forests and might result from the lack of long dry periods between precipitation events. Net throughfall flux was negatively related to precipitation concentration for H+, NH4/+, NO3/- and SO4/2-, suggesting that passive movement was important in characterizing throughfall dynamics.

UR - http://www.scopus.com/inward/record.url?scp=0034234956&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034234956&partnerID=8YFLogxK

U2 - 10.2134/jeq2000.00472425002900040022x

DO - 10.2134/jeq2000.00472425002900040022x

M3 - Article

VL - 29

SP - 1186

EP - 1193

JO - Journal of Environmental Quality

JF - Journal of Environmental Quality

SN - 0047-2425

IS - 4

ER -