TY - JOUR
T1 - Hydrochemical characteristics of throughfall and stemflow in a Moso-bamboo (Phyllostachys pubescens) forest
AU - Chiwa, Masaaki
AU - Onozawa, Yuka
AU - Otsuki, Kyoichi
PY - 2010/9
Y1 - 2010/9
N2 - To investigate the impacts of the invasion by bamboo on fluxes of nutrients and pollutants, the nutrient/pollutant fluxes and canopy interactions, including neutralization of acidity, leaching and uptake of nitrogen (N), were characterized in conjunction with rainfall partitioning in a Moso-bamboo (Phyllostachys pubescens) forest. Measurements of precipitation volume, pH, major ions, and silicate (SiO2) in rainfall, throughfall and stemflow were collected weekly in a Moso-bamboo forest located in Munakata City, Western Japan for 1 year. Results showed that rainfall partitioning into stemflow was larger than that for other types of forest, which may be due to the properties of Moso-bamboo forest structure, such as a straight and smooth culm. Inorganic N (NO3- + NH4+) and S (SO42-) fluxes of throughfall and stemflow were approximately 1.6 and 1.3 times higher than that of rainfall, respectively. Contribution of stemflow flux to inorganic N and S fluxes to the forest floor was high. This could be due to lower uptake of inorganic N through culm and a higher rainfall partitioning into stemflow than that for other types of forest. The Moso-bamboo canopy neutralized rainfall acidity, reducing the fluxes of potentially acidifying compounds via throughfall and stemflow. Canopy leaching of K+ was distinctly higher than that of Mg2+ and Ca2+ and could be related to the high mobility of K+ in plant tissues. Cl- and SiO2 were readily leached as for K+. The impact of the invasion by bamboo on nutrient cycling was discussed.
AB - To investigate the impacts of the invasion by bamboo on fluxes of nutrients and pollutants, the nutrient/pollutant fluxes and canopy interactions, including neutralization of acidity, leaching and uptake of nitrogen (N), were characterized in conjunction with rainfall partitioning in a Moso-bamboo (Phyllostachys pubescens) forest. Measurements of precipitation volume, pH, major ions, and silicate (SiO2) in rainfall, throughfall and stemflow were collected weekly in a Moso-bamboo forest located in Munakata City, Western Japan for 1 year. Results showed that rainfall partitioning into stemflow was larger than that for other types of forest, which may be due to the properties of Moso-bamboo forest structure, such as a straight and smooth culm. Inorganic N (NO3- + NH4+) and S (SO42-) fluxes of throughfall and stemflow were approximately 1.6 and 1.3 times higher than that of rainfall, respectively. Contribution of stemflow flux to inorganic N and S fluxes to the forest floor was high. This could be due to lower uptake of inorganic N through culm and a higher rainfall partitioning into stemflow than that for other types of forest. The Moso-bamboo canopy neutralized rainfall acidity, reducing the fluxes of potentially acidifying compounds via throughfall and stemflow. Canopy leaching of K+ was distinctly higher than that of Mg2+ and Ca2+ and could be related to the high mobility of K+ in plant tissues. Cl- and SiO2 were readily leached as for K+. The impact of the invasion by bamboo on nutrient cycling was discussed.
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U2 - 10.1002/hyp.7706
DO - 10.1002/hyp.7706
M3 - Article
AN - SCOPUS:78149456966
SN - 0885-6087
VL - 24
SP - 2924
EP - 2933
JO - Hydrological Processes
JF - Hydrological Processes
IS - 20
ER -
