搜索结果: 16-30 共查到“水文学 Soils”相关记录37条 . 查询时间(0.466 秒)
The Effects of Frozen Soils on Groundwater Recharge and Discharge in Granitic Rock Terrane of the Canadian Shield
Frozen Soils Groundwater Recharge Granitic Rock Terrane
2009/10/23
Hydrologic measurements on groundwater flow systems of the Canadian Shield
during the winter period provide insight into groundwater dynamics and can
support conclusions based on measurements of the...
MODELING OF CHEMICAL AND ELECTRICAL FLOWS IN LOW PERMEABILITY SOILS UNDER ELECTRICAL GRADIENT
ELECTRICAL FLOWS LOW PERMEABILITY SOILS CHEMICAL ELECTRICAL GRADIENT
2009/10/19
If an electrical gradient is imposed on wet fine-grained soil, contaminant transport occurs by a complex phenomenon called electrokinetics. Even though electrokinetics has been proven to be feasible i...
Significance of tree roots for preferential infiltration in stagnic soils
tree roots stagnic soils preferential infiltration
2009/10/10
It is generally recognized that roots have an effect on infiltration. In this study we analysed the relation between root length distributions from Norway spruce (Picea abies (L.) Karst), silver fir (...
Connecting ecohydrology and hydropedology in desert shrubs：stemflow as a source of preferential flow in soils
ecohydrology soils hydropedology water flow
2009/7/22
Ecohydrology and hydropedology are two emerging fields that are interconnected. In this study, we demonstrate stemflow hydrology and preferential water flow along roots in two desert shrubs (H. scopa...
A combined field and numerical approach to investigate flow processes in natural macroporous soils under extreme precipitation
flow processes field experiments natural macroporous soils
2009/6/8
A procedure involving simultaneous experimental and numerical research is described for the purposes of understanding the mechanisms involved when extreme precipitation is transformed to flood stream...
Critical loads for soils and freshwaters：a comparison methods at the Plynlimon catchments
Critical loads freshwaters Plynlimon catchments soils
2009/6/8
International agreements aimed at reducing sulphur deposition from the atmosphere are now focused on the "critical loads" concept. This provides a distributed link between sources and receptors of aci...
A comparative study of the soil solution chemistry of two Amazonian forest soils (Central Amazonia, Brazil)
soil water chemical composition forest soils
2009/6/8
Analyses of the chemical composition of rapidly percolating soil water were used to study the genesis of a shallow podzol in a Campinarana forest and a clayey ferralsol from a typical rainforest loca...
A two-layer application of the MAGIC model to predict the effects of land use scenarios and reductions in deposition on acid sensitive soils in the UK
acid soils UK Acid Waters Monitoring Network
2009/6/5
A two-layer application of the catchment-based soil and surface water acidification model, MAGIC, was applied to 21 sites in the UK Acid Waters Monitoring Network (AWAMN), and the results were compare...
Simulation of the long-term carbon and nitrogen dynamics in Dutch forest soils under Scots pine
long-term carbon Dutch forest soils nitrogen dynamics Scots pine
2009/6/5
Dynamics of C and N in forest soils in the Nutrient Cycling and Soil Acidification Model (NUCSAM) are described by the transformation and decomposition of three organic matter compartments, litter, fe...
Comparison of mercury in atmospheric deposition and in Illinois and USA soils
mercury atmospheric deposition soil geology Illinois USA
2009/5/18
It has been reported that most mercury (Hg) in USA soils is from atmospheric Hg deposition, mostly from anthropogenic sources. This paper compares the rates of atmospheric Hg deposition to amounts of ...
Hydrochemical heterogeneity in an upland catchment：further characterisation of the spatial, temporal and depth variations in soils, streams and groundwaters of the Plynlimon forested catchment, Wales
upland catchment Hydrochemical heterogeneity Wales
2009/5/18
The heterogeneous nature of upland hard-rock catchments in terms of geology, geomorphology, superficial deposits, soil type and land use gives rise to a range of hydrochemical characteristics in strea...
Towards a hydrological classification of European soils：preliminary test of its predictive power for the base flow index using river discharge data
European soils base flow hydrological classification
2009/5/12
Predicting discharge in ungauged catchments or contaminant movement through soil requires knowledge of the distribution and spatial heterogeneity of hydrological soil properties.
Because hydrolog...
Implications of changing from grazed or semi-natural vegetation to forestry for carbon stores and fluxes in upland organo-mineral soils in the UK
semi-natural vegetation carbon stores upland organo-mineral soils
2009/5/6
In the UK, as organo-mineral soils are a significant store of soil organic carbon (SOC), they may become increasingly favoured for the expansion of upland forestry. It is important, therefore, to asse...
Filter properties of seam material from paved urban soils
surface charge density surface area organic matter
2009/4/29
Depositions of all kinds of urban dirt and dust including anthropogenic organic substances like soot change the filter properties of the seam filling material of pervious pavements and lead to the for...
Staining substances have been widely used to visualize flow paths in soils, and recently dye concentrations in soil profiles are quantified using photographs. Fluorescent dye Uranine is one of the pro...