The Acidic Precipitation in Ontario Study (A.P.I.O.S.)

The Acidic Precipitation in Ontario Study (A.P.I.O.S.) was established in 1979 by the Ontario Ministry of the Environment to protect the environment from the detrimental effects of acidic deposition and determine the effects of acidic deposition on terrestrial ecosystems. The effect of acid inputs on the environment depends on the quantity and acidity of atmospheric inputs, and the buffering capacity of the terrestrial and aquatic ecosystems. The effect of acidic precipitation on soil is potentially significant because the soil is the reservoir of plant nutrients and the source of much of the water for aquatic systems. Changes in the soil's chemistry may therefore be reflected in both the terrestrial and aquatic environments. Information on the effects of acidic precipitation on soils is available from effects near point sources of pollution, from experimentation with simulated rain solutions, from natural changes observed in soil over time, and from models and soil forming theories. Anticipated effects of soil acidification include: reduced pH, leaching of basic cations (such as magnesium and calcium) and other exchangeable plant nutrients, reduction in base saturation and cation-exchange capacity, mobilization of soil-bound metals such as aluminum, and changes in biological activity such as decreased nitrification and soil respiration. The principal objective of the baseline program is to establish a uniform data base for soils across the province. This data base * provides current data to identify future trends, * enables the development of laboratory experiments which define soil sensitivity criteria to acidic precipitation, and * provides information required for sensitivity mapping of soils throughout Ontario.

Simple

Date ( RI_367 )
2022-03-29
Date ( RI_366 )
2022-03-29
RI_414
  Government of Ontario; Government of Ontario; Agriculture, Food and Rural Affairs - ( )
Status
onGoing; enContinue RI_596
Maintenance and update frequency
asNeeded; auBesoin RI_540
Keywords ( RI_528 )
  • Données Ontario
  • soil
  • acid precipitation
Government of Canada Core Subject Thesaurus Thésaurus des sujets de base du gouvernement du Canada ( RI_528 )
  • Government information
Use limitation
Open Government Licence – Ontario (https://www.ontario.ca/page/open-government-licence-ontario)
Access constraints
license; licence RI_606
Use constraints
license; licence RI_606
Spatial representation type
textTable; texteTable RI_637
Metadata language
eng; CAN
Metadata language
fra; CAN
Topic category
  • Economy
Begin date
0001-01-01
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Reference system identifier
unknown / unknown / unknown
Distribution format
  • CSV ( unknown )

  • HTML ( unknown )

RI_414
  Government of Ontario; Government of Ontario; Agriculture, Food and Rural Affairs - ( )
OnLine resource
Horizons-Average ( HTTPS )

Dataset;CSV;eng

OnLine resource
HorizonsAll ( HTTPS )

Dataset;CSV;eng

OnLine resource
Sites ( HTTPS )

Dataset;CSV;eng

OnLine resource
Metadata ( HTTPS )

Dataset;CSV;eng

OnLine resource
ArcGIS access ( HTTPS )

Dataset;HTML;eng

OnLine resource
GeoHub ( HTTPS )

Dataset;HTML;eng

OnLine resource
CarrefourGéo Ontario ( HTTPS )

Dataset;HTML;eng

OnLine resource
Original metadata (https://data.ontario.ca) ( HTTPS )

Dataset;HTML;eng

OnLine resource
Original metadata (https://data.ontario.ca/fr) ( HTTPS )

Dataset;HTML;fra

File identifier
2cd00a8f-c831-49c2-8a1d-7465b727f217 XML
Metadata language
eng; CAN
Character set
utf8; utf8 RI_458
Hierarchy level
dataset; jeuDonnées RI_622
Date stamp
2023-08-17
Metadata standard name
North American Profile of ISO 19115:2003 - Geographic information - Metadata
Metadata standard version
HNAP ISO:19115 - 2003
RI_414
  Government of Ontario; Government of Ontario; Agriculture, Food and Rural Affairs - ( )
 
 

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