Seasonal variation in the atmospheric deposition of inorganic constituents and canopy interactions in a Japanese cedar forest
Autor: | Tsumugu Totsuka, Hiroyasu Kobayashi, Makoto Nakata, Akiomi Takahashi, Masahiko Sato, Hiroyuki Sase |
---|---|
Rok vydání: | 2008 |
Předmět: |
Canopy
Stemflow Nitrogen Cryptomeria Rain Health Toxicology and Mutagenesis Wind Toxicology Trees Japan medicine Leaching (agriculture) Nitrites Hydrology Air Pollutants Plant Stems Chemistry General Medicine Seasonality Throughfall medicine.disease Pollution N compounds Plant Leaves Quaternary Ammonium Compounds Environmental chemistry Microscopy Electron Scanning Potassium Wettability Adsorption Seasons Environmental Monitoring |
Zdroj: | Environmental Pollution. 152:1-10 |
ISSN: | 0269-7491 |
Popis: | 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 SO 4 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 NH 4 + 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 NH 4 + concentration was positively correlated with the CA. The net fluxes of NH 4 + and NO 3 − from TF were positively correlated with the CA. The increase in wettability may accelerate leaching of K + or uptake of NH 4 + . |
Databáze: | OpenAIRE |
Externí odkaz: |