Spatial variability of throughfall fluxes in a spruce forest
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Spatial variability of throughfall fluxes in a spruce forest. / Beier, C.; Hansen, K.; Gundersen, P.
I: Environmental Pollution, Bind 81, Nr. 3, 1993, s. 257-267.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Spatial variability of throughfall fluxes in a spruce forest
AU - Beier, C.
AU - Hansen, K.
AU - Gundersen, P.
PY - 1993
Y1 - 1993
N2 - The spatial variability of throughfall deposition of H+, Ca2+, Mg2+, Na+, K+, Cl−, NO3−, NH4+, O42− to a Norway spruce (Picea abies (L.) Karst.) forest was intensively examined during the period October 1986 to October 1987. Large systematic spatial variability of the atmospheric deposition within the forest was observed. The flux of throughfall water was higher away from the trunk compared to the flux close to the trunk. In contrast to this, the deposition of all substances was considerably higher close to the trunk compared to the deposition at the periphery of the canopy. A linear decrease in deposition as a function of the distance from the nearest tree trunk was found. Further, the deposition varied quite dramatically between trees according to their size. The observed spatial variability in throughfall may be due to variabilities in the processes taking part in altering the distribution and composition of the precipitated water as it moves through the canopy. The influence of these processes of precipitation, wash-off, dry deposition and canopy exchange is discussed, and it is found that both increased dry deposition and canopy exchange in the tree tops contribute to the higher solute fluxes found close to the tree trunk.
AB - The spatial variability of throughfall deposition of H+, Ca2+, Mg2+, Na+, K+, Cl−, NO3−, NH4+, O42− to a Norway spruce (Picea abies (L.) Karst.) forest was intensively examined during the period October 1986 to October 1987. Large systematic spatial variability of the atmospheric deposition within the forest was observed. The flux of throughfall water was higher away from the trunk compared to the flux close to the trunk. In contrast to this, the deposition of all substances was considerably higher close to the trunk compared to the deposition at the periphery of the canopy. A linear decrease in deposition as a function of the distance from the nearest tree trunk was found. Further, the deposition varied quite dramatically between trees according to their size. The observed spatial variability in throughfall may be due to variabilities in the processes taking part in altering the distribution and composition of the precipitated water as it moves through the canopy. The influence of these processes of precipitation, wash-off, dry deposition and canopy exchange is discussed, and it is found that both increased dry deposition and canopy exchange in the tree tops contribute to the higher solute fluxes found close to the tree trunk.
U2 - 10.1016/0269-7491(93)90208-6
DO - 10.1016/0269-7491(93)90208-6
M3 - Journal article
VL - 81
SP - 257
EP - 267
JO - Environmental Pollution
JF - Environmental Pollution
SN - 0269-7491
IS - 3
ER -
ID: 107139722