AI Article Synopsis
- - The study examined seasonal changes in throughfall (TF) and stemflow (SF) chemistry in a Japanese cedar forest, revealing distinct trends in ion fluxes influenced by seasonal winds.
- - Canopy interactions significantly affected the fluxes of NH4+ and K+ ions, with water droplet behavior on leaves changing as they aged, impacting ion absorption and leaching.
- - A decrease in the contact angle (CA) of water droplets on older leaves correlated with higher NH4+ fluxes, while K+ levels were negatively affected, suggesting that increased wettability may enhance nutrient uptake and leaching.
Article Abstract
The seasonal changes in throughfall (TF) and stemflow (SF) chemistry and the canopy interactions of K+ and N compounds were studied in a Japanese cedar forest near the Sea of Japan. The fluxes of most ions, including non-sea-salt SO4(2-), from TF, SF, and rainfall showed distinct seasonal trends, increasing from autumn to winter, owing to the seasonal west wind, while the fluxes of NH4+ and K+ ions from TF+SF might have a large effect of canopy interactions. The contact angle (CA) of water droplets on leaves decreased with leaf aging, suggesting that surface wettability increases with leaf age. The K+ concentration in TF was negatively correlated with the CA of 1-year-old leaves, while the NH4+ concentration was positively correlated with the CA. The net fluxes of NH4+ and NO3(-) from TF were positively correlated with the CA. The increase in wettability may accelerate leaching of K+ or uptake of NH4+.
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| http://dx.doi.org/10.1016/j.envpol.2007.06.023 | DOI Listing |
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