A Study of Forest Soils and Leachates on Sloping Topography Using a Tension Lysimeter

Abstract

Acrylic tension lysimeters were used to coilect but to a greater extent in the subsurface horiboth vertically and horizontally moving water zons. Although more .leachate was collected from soils ui t*o different iorest sites on from the Whatcom soil, the ionic concentrasloping topography. The leachates were an-tions were similar between the two sites. WithatyzeA

Nutrient Movement Through Western Hemlock-Western Redcedar Ecosystems in Southwestern British Columbia

“…In throughfall they were higher in early autumn, probably due to an accumulation of dust particles on vegetation and of leachable chemicals in foliage and bark during the preceding dry period. Similar results have generally been obtained by other workers in northern temperate regions (Bourgeois and Lavkulich 1972a, Cole 1963, Iwatsubo and Tsutsumi 1968, Shilova and Korovkina 1961, Windsor 1969.…”

“…This may be responsible for the peaks in spring. Similar seasonal behavior in soil leachates has been observed at Cedar River (Cole 1963, Grier andCole 1972), and the results agree with those from a short-term study by Bourgeois and Lavkulich (1972a) on 2 of the soils present in the study area. Seasonal behavior very similar to that found at Haney (with occasional minor variations for individual ions) has generally been found by other workers in northern temperate regions (Bloomfield 1953, Delong and Schnitzer 1955, Iwatsubo and Tsutsumi 1968, Mayer 1971, Shilova and Korovkina 1961, Smirnova and Glebova 1958.…”

“…The cation behavior in ecosystem solutions found in the present study is very similar to that reported by Mayer (1971) for a beech forest-acid braunerde soil ecosystem in Germany, by Iwatsubo and Tsutsumi (1968) for some Japanese forest ecosystems, and generally similar to the results reported by Cleaves et al (1970) for precipitation, A-horizon leachate, groundwater, and stream water in Maryland. Bourgeois and Lavkulich (1972a) found essentially the same behavior in the mineral horizons of 2 soils which were included in this study. Shilova and Korovkina (1961) found a decrease in Ca but increases in Mg and Na + K concentrations with depth in fine-textured podzols in Russia.…”

“…One type, which was constructed from Plexi-glas® and circular porous alundum discs (10.2 em in diameter) was similar to that described by Cole (1968). The other type was similar to that used by Bourgeois and Lavkulich (1972b). It had identical dimensions to those of the first type but utilized a 1-cm-thick layer of 320 grit silicon carbide powder instead of an alundum disc.…”

Topographical variations in a plant–soil system along a slope on Mt Ryuoh, Japan

“…There have been several studies of topographical variation in nutrient cycling via water ( Bourgeois & Lankulich 1972). Sollins & McCorinson (1981) monitored soil solution chemistry at four locations along a slope before and after clear‐felling.…”