250
Nuria Melia, Juan Bellot and V. Ramon Vallejo
concentrations in the deep subsurface flow were similar to those in the
stormflow in Ca2+, Mg2+ and K+, but lower in Na+ and slightly higher in SO/and Cl-. According to the two-component mixing model from Avila et al.
(1995), an approximately equal proportion of groundwater and deep subsurface flow was found to contribute to the stormflow.
At Prades, a different pattern of concentration was observed between the
soil water types and the streamwater depending on the behaviour of the ion
considered (Fig. 17.5). Thus, for Ca 2 + and Mg2+, which were more abundant
in the soil matrix, and less mobile, the concentrations in the streamwater
were closer to the soil solution composition than to the gravitational water,
especially in the topsoil (0-15 cm). For sol-, the situation of streamwater
concentration was intermediate between that from the gravitational water
and from the soil solution. The more mobile Na+ and CI-, which have a low
biological demand, presented similar concentrations in the streamwater and
the gravitational water percolating through the soil. Finally, for the most biophilic ions, K+ and especially N03 -, both soil solution and gravitational water
showed much higher concentrations than streamwater, as happened also at
Montseny, indicating that these nutrients were retained by the soil-plant
system before reaching the stream.
References
Avila A, Bonilla D, Roda F, Pinol J, Neal C (1995) Soilwater chemistry in a holm oak (Quercus
ilex) forest: inferences on biogeochemical processes for a montane-Mediterranean area. J
HydroI166:15-35
Bellot J, Escarre A (1991) Chemical characteristics and temporal variations of nutrients in
throughfall and stemflow of three species in Mediterranean holm oak forest. For Ecol Manage 41:125-135
Bellot J, Sanchez JR, Lled6 M1, Martinez P, Escarre A (1992) Litterfall as a measure of primary
production in Mediterranean holm-oak forest. Vegetatio 99/100:69-76
Bonilla D (1990) Biogeoquimica del suelo en un en cinar y landas del Montseny: la soluci6n del
suelo,la dinamica del nitr6geno y la respuesta a una perturbaci6n experimental. PhD Thesis,
Autonomous University of Barcelona, Bellaterra
Bonilla D, Roda F (1990) Nitrogen cycling responses to disturbance: trenching experiments in
an evergreen oak forest. In: Harrison AF, Ineson P, Heal OW (eds) Nutrient cycling in terrestrial ecosystems. Elsevier, London, pp 179-189
Casals P, Romanya 1, Cortina J, Fons 1, Bode M, Vallejo VR (1995) Nitrogen supply rate in Scots
pine (Pinus sylvestris L.) forests of contrasting slope aspect. Plant Soil 168-169:67-73
Cortina 1, Romanya J, Vallejo VR (1995) Nitrogen and phosphorus leaching from the forest floor
of a mature Pinus radiata stand. Geoderma 66:321-330
Fernandez IJ, Lawrence GB, Son Y (1995) Soil solution chemistry in a low-elevation spruce-fir
ecosystem, Howland, Maine. Water Air Soil Pollut 84: 129-145
Gazquez R (1995) Seguimiento lisimetrico del efecto del fuego y la tala en suelos forestales de la
Serra de Prades, Tarragona. MSc Thesis, Escola Superior Agricultura de Barcelona, Barcelona
Giesler R, Lundstrom U (1993) Soil solution chemistry: effects of bulking soil samples. Soil Sci
Soc Am J 57:1283-1288
Gillman GP (1976) A centrifuge method for obtaining soil solutions. Div of Soils Rep 16. CSIRO,
Melbourne, Australia
Nuria Melia, Juan Bellot and V. Ramon Vallejo
concentrations in the deep subsurface flow were similar to those in the
stormflow in Ca2+, Mg2+ and K+, but lower in Na+ and slightly higher in SO/and Cl-. According to the two-component mixing model from Avila et al.
(1995), an approximately equal proportion of groundwater and deep subsurface flow was found to contribute to the stormflow.
At Prades, a different pattern of concentration was observed between the
soil water types and the streamwater depending on the behaviour of the ion
considered (Fig. 17.5). Thus, for Ca 2 + and Mg2+, which were more abundant
in the soil matrix, and less mobile, the concentrations in the streamwater
were closer to the soil solution composition than to the gravitational water,
especially in the topsoil (0-15 cm). For sol-, the situation of streamwater
concentration was intermediate between that from the gravitational water
and from the soil solution. The more mobile Na+ and CI-, which have a low
biological demand, presented similar concentrations in the streamwater and
the gravitational water percolating through the soil. Finally, for the most biophilic ions, K+ and especially N03 -, both soil solution and gravitational water
showed much higher concentrations than streamwater, as happened also at
Montseny, indicating that these nutrients were retained by the soil-plant
system before reaching the stream.
References
Avila A, Bonilla D, Roda F, Pinol J, Neal C (1995) Soilwater chemistry in a holm oak (Quercus
ilex) forest: inferences on biogeochemical processes for a montane-Mediterranean area. J
HydroI166:15-35
Bellot J, Escarre A (1991) Chemical characteristics and temporal variations of nutrients in
throughfall and stemflow of three species in Mediterranean holm oak forest. For Ecol Manage 41:125-135
Bellot J, Sanchez JR, Lled6 M1, Martinez P, Escarre A (1992) Litterfall as a measure of primary
production in Mediterranean holm-oak forest. Vegetatio 99/100:69-76
Bonilla D (1990) Biogeoquimica del suelo en un en cinar y landas del Montseny: la soluci6n del
suelo,la dinamica del nitr6geno y la respuesta a una perturbaci6n experimental. PhD Thesis,
Autonomous University of Barcelona, Bellaterra
Bonilla D, Roda F (1990) Nitrogen cycling responses to disturbance: trenching experiments in
an evergreen oak forest. In: Harrison AF, Ineson P, Heal OW (eds) Nutrient cycling in terrestrial ecosystems. Elsevier, London, pp 179-189
Casals P, Romanya 1, Cortina J, Fons 1, Bode M, Vallejo VR (1995) Nitrogen supply rate in Scots
pine (Pinus sylvestris L.) forests of contrasting slope aspect. Plant Soil 168-169:67-73
Cortina 1, Romanya J, Vallejo VR (1995) Nitrogen and phosphorus leaching from the forest floor
of a mature Pinus radiata stand. Geoderma 66:321-330
Fernandez IJ, Lawrence GB, Son Y (1995) Soil solution chemistry in a low-elevation spruce-fir
ecosystem, Howland, Maine. Water Air Soil Pollut 84: 129-145
Gazquez R (1995) Seguimiento lisimetrico del efecto del fuego y la tala en suelos forestales de la
Serra de Prades, Tarragona. MSc Thesis, Escola Superior Agricultura de Barcelona, Barcelona
Giesler R, Lundstrom U (1993) Soil solution chemistry: effects of bulking soil samples. Soil Sci
Soc Am J 57:1283-1288
Gillman GP (1976) A centrifuge method for obtaining soil solutions. Div of Soils Rep 16. CSIRO,
Melbourne, Australia