Results 141 to 150 of about 972 (162)

Spatial variations in throughfall in a Moso bamboo forest: sampling design for the estimates of stand‐scale throughfall

Hydrological Processes, 2009
AbstractWe investigated the spatial and seasonal variations in throughfall (Tf) in relation to spatial and seasonal variations in canopy structure and gross rainfall (Rf) and assessed the impacts of the variations in Tf on stand‐scale Tf estimates. We observed the canopy structure expressed as the leaf area index (LAI) once a month and Tf once a week ...
Yoshinori Shinohara, Yuka Onozawa, Masaaki Chiwa, Tomonori Kume, Hikaru Komatsu, Kyoichi Otsuki   +5 more
openaire   +1 more source

Soil acidification from atmospheric ammonium sulphate in forest canopy throughfall

Nature, 1982
Acid rain commonly has high concentrations of dissolved SO2−4, NH+4 and NO−3. Sulphuric and nitric acids are usually considered to be the acidic components, whereas ammonium has a tendency to increase the pH of rainwater1. Ammonium can be transformed to nitric acid in soil but this source of acidity is generally less important than wet and dry ...
van Breemen, N., Burrough, P.A., Velthorst, E.J., van Dobben, H.F., de Wit, T., Ridder, T.B., Reijnders, H.F.R.   +6 more
openaire   +3 more sources

Sources of sulphur in forest canopy throughfall

Nature, 1988
Atmospheric deposition of sulphate is the primary link between the atmosphere and acidification of soils and aquatic ecosystems1. The flux of sulphate to forest soils can be measured in the water that drips from trees following the interception of rain to form stemflow and throughfall (the sum of which is designated here as TF).
S. E. Lindberg, C. T. Garten
openaire   +1 more source

Temporal persistence of spatial patterns in throughfall

Journal of Hydrology, 2005
Spatial and temporal variability of throughfall beneath forests are potentially important controls on soil processes, watershed hydrology, and biogeochemistry. We used a set of 94 rain gauges to measure variability of throughfall beneath three forest stands in the Pacific Northwest, USA.
Keim, R. F., Skaugset, A. E., Weiler, Markus   +2 more
openaire   +2 more sources

estimating mean throughfall

2016
The selection of an appropriate spatial extent of a sampling plot is one among several important decisions involved in planning a throughfall sampling scheme. In fact, the choice of the extent may determine whether or not a study can adequately characterize the hydrological fluxes of the studied ecosystem.
Zimmermann, Alexander, Voss, Sebastian, Metzger, Johanna Clara, Hildebrandt, Anke, Zimmermann, Beate   +4 more
openaire   +1 more source

Throughfall chemistry in a spruce chronosequence in southern Poland

Environmental Pollution, 2008
The chemical composition of throughfall and canopy leaching, as well as the acid neutralizing capacity and alkalinity depended on the age of Norway spruce (Picea abies Karst) stands and season of the year. A higher amount of sulphur and strong acids was deposited to the soil in the older age classes.
Stanisław, Małek, Aleksander, Astel
openaire   +2 more sources

Spatial variability of throughfall fluxes in a spruce forest

Environmental Pollution, 1993
The spatial variability of throughfall deposition of H(+), Ca(2+), Mg(2+), Na(+), K(+), Cl(-), NO(3)(-), NH(4)(+), O(4)(2-) 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.
C, Beier, K, Hansen, P, Gundersen
openaire   +2 more sources

Throughfall Measurements of Nitrogen and Sulphur Compounds

International Journal of Environmental Analytical Chemistry, 1993
Abstract The wet- and throughfall deposition of nitrogen and sulphur compounds to a spruce forest edge in Sweden was studied using preserved as well as unpreserved collectors. During the warmer part of the year inorganic nitrogen was lost in unpreserved throughfall collectors, if they were not shielded from light.
openaire   +1 more source

Interception loss, throughfall and stemflow in a maritime pine stand. I. Variability of throughfall and stemflow beneath the pine canopy

Journal of Hydrology, 1992
Patterns of spatial variability of throughfall and stemflow were determined in a maritime pine (Pinus pinaster Ait.) stand for two consecutive years. Data were obtained from 52 fixed rain gauges and 12 stemflow measuring devices located in a 50m × 50m plot at the centre of an 18-year-old stand.
Loustau, Denis, Berbigier, Paul, Granier, A., El Hadj Moussa, F.   +3 more
openaire   +2 more sources

Effect of vegetation type on throughfall deposition and seepage flux

Environmental Pollution, 2008
This paper compares different vegetation types (coniferous and deciduous forest, grassed and pure heathland) in terms of input (throughfall deposition) and output (seepage flux) in a region with intermediate nitrogen load (+/-20kg Nha(-1)y(-1) via bulk precipitation) in comparable conditions in north Belgium.
de Schrijver, A., Staelens, J., Wuyts, K., van Hoydonck, G., Janssen, N., Mertens, J., Gielis, L., Geudens, G., Augusto, Laurent, Verheyen, Kris   +9 more
openaire   +4 more sources