From data.gov.au
JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Mean annual concentration of mineral nitrogen in soil water (mgN / kgH20) in the present day scenario

Created 12/05/2013

Updated 09/08/2023

JSON format icon JSON RDF format icon RDF ISO19115-3 XML

Definition: Mean annual dissolved concentration of mineral nitrogen in soil water (mg of nitrogen per kg of water), averaged for both soil layers. Interpretation: The dissolved N concentration is calculated as the ratio of the mineral N store to soil water store, which assumes that all the mineral N is in solution. Rainfall has a strong influence on the pattern of both these stores, but not on their ratio. The pattern of mineral N concentrations is explained by the effect of air dryness (saturation deficit) on the mineral N store (mainly controlled by NPP) which is greater than the effect of air dryness on the soil water store (mainly determined by rainfall or energy limitation). This gives a pattern of N concentration in soil water that decreases as the climate-average air dryness increases from temperate to semi- arid tropical environments. Notes: These are model-based estimates from the BiosEquil model. Results are given for the aBasea (pre-1788) and aAgrica (present day) conditions. The aAgrica case includes (1) current agricultural inputs of water from irrigation; (2) current agricultural inputs of nutrients (nitrogen and phosphorus) from fertiliser, legume crops, and legume pastures; (3) current nutrient offtakes by product removal (harvest, stock). NMnlConc0.Agric a Mean annual concentration of mineral nitrogen in soil water (mgN kgH2O-1) in the aAgrica (present day) scenario NMnlConc0.Base a Mean annual concentration of mineral nitrogen in soil water (mgN kgH2O-1) in the aBasea (pre-1788) scenario Data is in geographics and GDA94.

See further metadata for more detail.

Files and APIs

Tags

Additional Info

Field Value
Title Mean annual concentration of mineral nitrogen in soil water (mgN / kgH20) in the present day scenario
Language English
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/ec4efed3-b2e4-46a2-8323-b5b30d9ddd31
Contact Point
South Australian Governments
data.gov@finance.gov.au
Reference Period 12/05/2013
Geospatial Coverage Australia
Data Portal data.gov.au

Data Source

This dataset was originally found on data.gov.au "Mean annual concentration of mineral nitrogen in soil water (mgN / kgH20) in the present day scenario". Please visit the source to access the original metadata of the dataset:
https://data.gov.au/data/dataset/mean-annual-concentration-of-mineral-nitrogen-in-soil-water-mgn-kgh20-in-the-present-day-scenario