搜索结果: 16-30 共查到“水文学 Nitrogen”相关记录66条 . 查询时间(0.183 秒)
Profiles of Nitrogen Species in a Sand-Silt Aquifer at Haslemoen,Solør,South Norway
Nitrogen Species Sand-Silt Aquifer Haslemoen
2009/10/27
Chemical profiles of water in the vadose zone and in the upper part of the
groundwater from a water-table sand-silt aquifer at Haslemoen, South Norway,
have been studied. Filter tips attached to ste...
Nitrogen and Phosphorus Fluxes from Finnish Agricultural Areas to the Baltic Sea
Nitrogen and Phosphorus Fluxes Agricultural Areas Baltic Sea
2009/10/26
Nutrient losses from small drainage basins were compared to the nutrient
fluxes in small coastal rivers in order to study the representativeness of the
Finnish monitoring network of small basins, es...
Nitrogen Concentrations Simulated with HBV-N:New Response Function and Calibration Strategy
Nitrogen Concentrations HBV-N New Response Function Calibration Strategy
2009/10/23
HBV-N is a conceptual process-based model for simulation of transformation
and transport of nitrogen on the catchment scale. This paper presents further development
with focus on the response functi...
USE OF ISOTOPICALLY LABELED FERTILIZER TO TRACE NITROGEN FERTILIZER CONTRIBUTIONS TO SURFACE, SOIL, AND GROUND WATER
single N fertilizer ground water glacial aquifer
2009/10/13
The fate and transport of a single N fertilizer application through plants, soil, runoff, and the unsaturated and saturated zones was determined for four years at a field site under continuous corn (Z...
NITROGEN CYCLING AND REMOVAL EFFICIENCY IN A RICE FIELD
nitrogen nitrogen cycle mass balance water quality
2009/10/13
The major sources and sinks of nitrogen (N) were calculated during the rice growth cycle in a lowland paddy field in Japan in order to better understand contamination of surface and groundwater. Depos...
Studies of lake environments using stable isotope ratios of nitrogen (δ15N) and carbon (δ13C)
stable isotopes nitrogen carbon lake
2009/7/14
Increasing numbers of studies have recently used stable isotopes of nitrogen (δ15N) and carbon (δ13C) to clarify the source of nutrients in lake water and sediments, the structure and energy flow of f...
Modelling the ecosystem effects of nitrogen deposition：Model of Ecosystem Retention and Loss of Inorganic Nitrogen
nitrogen deposition Ecosystem Retention
2009/6/8
A catchment-scale mass-balance model of linked carbon and nitrogen cycling in ecosystems has been developed for simulating leaching losses of inorganic nitrogen. The model (MERLIN) considers linked bi...
Modelling the response of soil and soil solution chemistry upon roofing a forest in an area with high nitrogen deposition
nitrate (NO3) sulphate (SO4) soil solution chemistry
2009/6/5
In the Speuld forest, the Netherlands, the dynamic soil acidification model NuCSAM has been applied to a manipulation experiment in which part of the forest was roofed to control nitrogen (N) and sulp...
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...
Applying MERLIN for modelling nitrate leaching in a nitrogen saturated Douglas fir forest in the Netherlands after decreased atmospheric nitrogen input
refractory organic matter atmospheric nitrogen input nitrate leaching
2009/6/5
The MERLIN model was applied on the results of a field-scale manipulation experiment with decreased nitrogen (N) deposition in an N saturated forest ecosystem in the Netherlands. The aim was to invest...
Nitrogen leaching from N limited forest ecosystems：the MERLIN model applied to Gårdsjön, Sweden
Nitrogen Sweden forest ecosystems
2009/6/5
Chronic deposition of inorganic nitrogen (N) compounds from the atmosphere to forested ecosystems can alter the status of a forest ecosystem from N-limited towards N-rich, which may cause, among other...
Water and nitrogen processes along a typical water flowpath and streamwater exports from a forested catchment and changes after clear-cutting：a modelling study
nitrogen water flowpath
2009/5/18
A two dimensional model, FEMMA, to describe water and nitrogen (N) fluxes within and from a forested first-order catchment (Kangasvaara in Eastern Finland) was constructed by linking the most signifi...
Integrated Nitrogen CAtchment model (INCA) applied to a tropical catchment in the Atlantic Forest, São Paulo, Brazil
Integrated Nitrogen in CAtchments atmospheric deposition rates hydrological conditions
2009/5/6
Stream-water flows and in-stream nitrate and ammonium concentrations in a small (36.7 ha) Atlantic Forest catchment were simulated using the Integrated Nitrogen in CAtchments (INCA) model version 1.9....
The role of catchment characteristics in determining surface water nitrogen in four upland regions in the UK
catchment characteristics upland regions surface water nitrogen
2009/5/6
Hydrochemical and catchment data from 80 upland moorland sites in four regions with contrasting climate, soils, geology and geomorphology have been analysed to assess the key catchment attributes that...
Lacustrine wetland in an agricultural catchment：nitrogen removal and related biogeochemical processes
Lacustrine wetland agricultural catchment biogeochemical processes
2009/4/29
The role of specific catchment areas, such as the soil-river or lake interfaces, in removing or buffering the flux of N from terrestrial to aquatic ecosystems is globally recognized but the extreme va...