Base cation leaching from the canopy of a subtropical rainforest in northeastern Taiwan

Lin, Teng Chiu; Hamburg, Steven P.; Hsia, Yue-Joe; King, Hen-Biau; Wang, Lih-Jih; Lin, Kuo-Chuan

doi:10.1139/cjfr-31-7-1156

Cited by 12 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Na-ratio method tends to underestimate the dry deposition of Ca 2+ and Mg 2+ and overestimate deposition of K + , because the mass median diameters of the ions of Ca 2+ and Mg 2+ are larger than Na + , but that of K + is smaller than that of Na + (Draaijers et al 1997;Zeng et al 2005). The subtropical monsoon climate of Hunan is typifi ed by cold winters and hot summers, abundant but unevenly distributed rainfall, and high relative humidity, which is similar to Fu-shan Experimental Forest in Taiwan (Lin et al 2001). However, the Fu-shan forest has high variabilities in atmospheric chemistry and precipitation deposition pattern as a result of typhoon disturbances and the coastal climate (Lin et al 2003).…”

Section: Introductionmentioning

confidence: 93%

“…3). Although many authors have assumed that the canopy leaching or uptake of SO 4 2− is negligible (Bredemeier 1988;Butler and Likens 1995;Draaijers and Erisman 1995;Lin et al 2001), evidence of leaching of SO 4 2− has been reported in forests of eastern Finland (Piirainen et al 2002;Finér et al 2004). Sulfate ion may accelerate base cation leaching from forest canopies, but the leached SO 4 2− can be compensated by the absorption of sulfate from soil and rainwater (Likens et al 2002).…”

Section: Canopy Leaching To Ntfmentioning

confidence: 99%

“…Canopy active exchange processes are likely to take place between the proton and the plant base cations during the long contact on wetted leaf surface (Butler and Likens et al 1995). Lin et al (2001) reported that extended contact of acid rainwater on canopy leaf surface usually facilitates proton exchange in rainwater with base cations in leaf tissues.…”

Section: Ion Concentration and Precipitation Aciditymentioning

confidence: 99%

See 2 more Smart Citations

Deposition pattern of precipitation and throughfall in a subtropical evergreen forest in south-central China

Zhang

Zeng

Huang

et al. 2006

Journal of Forest Research

View full text Add to dashboard Cite

The effects of dry deposition, canopy leaching, precipitation ion concentration, and precipitation H + concentration on net throughfall fl ux (NTF, throughfall minus bulk precipitation) were evaluated on a seasonal basis by using a multiple regression analysis approach based on an observation period of 4 years in Shaoshan subtropical mixed evergreen forest, south-central China. Regression analysis results indicated that the estimated canopy exchange fl ux was the dominant factor regulating the NTF and the calculated dry deposition was a minor term. The seasonal dry deposition of base cations accounted for 15%-43% of the NTF. The NTF analysis showed that K + , Ca 2+ , Mg 2+ , Na + , and weak acids in throughfall were derived from foliar leaching and the canopy uptakes of H + , NH 4 + , and NO 3 − were from precipitation. The retention rate of proton (H + and NH 4 + ) in the canopy was close to the canopy leaching rate of base cations when corrected for weak acids because weak acid-induced canopy leaching did not exchange with protons, which suggested that the canopy leaching processes neutralized acid precipitation in Shaoshan forest.

show abstract

Section: Introductionmentioning

confidence: 93%

Section: Canopy Leaching To Ntfmentioning

confidence: 99%

Section: Ion Concentration and Precipitation Aciditymentioning

confidence: 99%

See 1 more Smart Citation

Deposition pattern of precipitation and throughfall in a subtropical evergreen forest in south-central China

Zhang

Zeng

Huang

et al. 2006

Journal of Forest Research

View full text Add to dashboard Cite

show abstract

“…Although canopy-atmosphere interactions have been reported in temperate forests [1,5,14,29,42], few or limited number of the studies on canopy exchange processes have been conducted in Chinese forests recently, particularly in subtropical forests [18,25,26].…”

Section: Introductionmentioning

confidence: 99%

Seasonal ionic exchange in two-layer canopies and total deposition in a subtropical evergreen mixed forest in central-south China

et al. 2006

View full text Add to dashboard Cite

-About 15 and 9% of rainfall were intercepted by the top-and sub-canopy layer, respectively. Although seasonal base cations concentrations in the sub-throughfall were higher than those in throughfall, the calculated base cations leached from the sub-canopy was significantly low relative to that in the top-canopy. The uptakes of H + and NH + 4 in the top-canopy were significantly higher than the sub-canopy, suggesting that the acidity buffering processes mainly took place in the top-canopy. Annual mean dry deposition of Ca 2+ accounted for 53.1% of its annual total deposition, which was higher than that of Mg 2+ (28.2%) and K + (29.8%). The annual dry deposition of NH + 4 amounted to 30.6% of its annual total deposition. The annual total deposition of base cations was similar to the total deposition of inorganic nitrogen (NH base cations / nitrogen / throughfall / total deposition / forest Résumé -Échanges ioniques saisonniers dans deux strates de la canopée et dépôts atmosphériques totaux dans une forêt mixte sempervirente sub-tropicale dans la partie centrale du sud de la Chine. Les strates supérieures et inférieures de la canopée ont intercepté respectivement environ 15 et 9 % des eaux de pluie. Même si les concentrations saisonnières en cations basiques dans les précipitations arrivant au sol (S-TF) étaient plus importantes que celles des précipitations traversant la canopée (TF), le lessivage calculé des cations basiques provenant de la partie inférieure de la canopée était significativement plus faible par rapport à celui de la partie supérieure de la canopée. Le prélèvement de H + et NH4 + par la partie supérieure de la canopée était significativement supérieur à celui de la partie inférieure de la canopée, ce qui a suggéré que le processus de neutralisation de l'acidité intervenait principalement dans la partie supérieure de la canopée. Les dépôts secs moyens annuels de Ca 2+ représentaient 53,1 % de ces dépôts annuels totaux, contre seulement 28,2 % pour Mg 2+ et 29,8 % pour K + . Le dépôt sec annuel de NH 4+ représentait 30,6 % de son dépôt annuel total. Le dépôt total annuel de cations basiques était similaire au dépôt total d'azote inorganique (NH cations basiques / azote / précipitations traversant la canopée / dépôt total / forêt

show abstract

“…Of the ten typhoons that influenced Fu-shan between 1994 and 1997, only one was categorized as light (Յ32.6 m/s), four were medium (32.7-50.9 m/s), and five were strong (Ն51 m/s, see Table 1) using the Taiwan Central Weather Bureau classification system (Chang 2001). At the Fu-shan Experimental Forest, long-term data on the forest and the typhoons that impact the forest are available (Lin et al 1994(Lin et al , 2000(Lin et al , 2001Wang 1994;Horng et al 1995;Mabry et al 1998). In this study we characterized the understory light environments within the Fu-shan Experimental Forest in order to evaluate the impacts of typhoon disturbance on subtropical forest regeneration.…”

Section: Introductionmentioning

confidence: 99%

Influence of typhoon disturbances on the understory light regime and stand dynamics of a subtropical rain forest in northeastern Taiwan

Lin

Hamburg

Hsia³

et al. 2003

Journal of Forest Research

Self Cite

View full text Add to dashboard Cite

in much higher light levels beneath the canopy (9%-30% of levels in the open) than those found in most tropical and temperate forests. As a result, understory light levels are not limiting the distribution of canopy tree saplings within the forest and there is no evidence that canopy gaps play an important role in canopy tree regeneration within the Fushan Experiment Forest. This is in contrast with the pattern reported for some tropical forests. With frequent typhoons impacting northeastern Taiwan, the forests of this region are perpetually recovering from wind disturbances.

show abstract

Base cation leaching from the canopy of a subtropical rainforest in northeastern Taiwan

Cited by 12 publications

References 0 publications

Deposition pattern of precipitation and throughfall in a subtropical evergreen forest in south-central China

Deposition pattern of precipitation and throughfall in a subtropical evergreen forest in south-central China

Seasonal ionic exchange in two-layer canopies and total deposition in a subtropical evergreen mixed forest in central-south China

Influence of typhoon disturbances on the understory light regime and stand dynamics of a subtropical rain forest in northeastern Taiwan

Contact Info

Product

Resources

About