The distribution of solute processes on an acid hillslope and the delivery of solutes to a stream : II. Exchangeable Al3+
water chemistry have not been studied in detail, the spatial patterns of Al appear to be closely connected with the delivery of soluble Al from a high acidified hillslope to the stream. The aims of this paper are : to investigate the spatial distribution
of Al oxides and exchangeable Al3+ on a podzolised hillslope; and to examine their possible connection with the hydrochemical response of the stream.
Ecosystem CO2 exchange from the Sahel to the Arctic - in a global change perspective
function under marginal conditions, limited either by heat or water supply. By combining eddy covariance measurements and CO2 exchange modelling, the sensitivity of these systems related to temperature change is evaluated.
Regime of subsurface water resources in shallow groundwater agricultural fields
Agroclimatology ; China ; Evapotranspiration ; Groundwater ; Irrigation ; Shandong ; Soil water ; Sustainable development ; Water ; Water regime
In shallow groundwater agricultural fields, waterexchanges between groundwater and soil water happen frequently and intensively. This paper analyzes the regime of subsurface water during the growing period of winter wheat from October 1998 to June
1999 in Yucheng area. The results showed that a significant proportion of field evapotranspiration was supplied by groundwater evaporation, whereas the role of groundwater evaporation was not considered during irrigation, leading to soil water
percolation into groundwater. In order to improve water use efficiency of crops, some measures were put forward in the paper.
Down-slope change in soil hydrogeochemistry due to seasonal water table rise : Implications for groundwater weathering
Australia ; Catena ; Chemical erosion ; Geochemistry ; Hydrochemistry ; Isotope analysis ; Regolith ; Soil properties ; South Australia ; Strontium ; Underground water ; Watershed ; Weathering
geochemistry, soil exchange pool and soil pore water hydrochemistry; stream water and groundwater hydrochemistry were analysed as well. This investigation aimed to: 1) trace water through soils, into the groundwater, and to the stream; and 2) investigate soil
and regolith weathering hydrochemistry. Strontium isotope analysis of the groundwater, stream water, soil pore water, and soil exchange pool has established that the stream water is a mix of soil water and groundwater. This mix varies seasonally due to large
changes in soil water input. The weathering is thought to be concentrated in the vadose zone at the transition between bedrock and saprolite.
Asian part of Russia ; Kamchatka ; Kuril Islands ; North Pacific Ocean ; Russian Far East ; Salinity ; Sea water ; Subarctic zone ; Water circulation ; Waterexchange ; Water temperature
Energy balance ; Evaporation ; Model ; Plant canopy ; Radiation ; Remote sensing ; Soil ; Soil properties ; Soil water ; Spectral reflectance ; Vegetation
other processes, the exchange of water and energy between the soil, vegetation and the atmosphere. They require information about the interaction of radiation with the soil and vegetation. This approach is illustrated by the estimation of soil hydraulic
of the physical ocean-research in the Baltic area. Three spheres of action are emphasized: ascertainment of the horizontal waterexchange in the area of Darss-Ridge| quantitative definition of the vertical interchange between surface and deep water: modelling
Atlantic Ocean ; Energy transfer ; Marine hydrology ; Model ; Ocean circulation ; Sea current ; South Atlantic Ocean ; Thermal exchange ; Waterexchange