# ISO 20951:2019 — Withdrawn and superseded ISO standards

For ISO 20951:2019, item title is Soil Quality — Guidance on methods for measuring greenhouse gases (CO2, N2O, CH4) and ammonia (NH3) fluxes between soils and the atmosphere; status code is 9599; successor is ISO 20951:2026; withdrawn / published date is 2019-06-17, recorded from its source on 2026-08-05.

- **Identifier:** ISO 20951:2019 _(verified: appears in the quote below)_
- **Item title:** Soil Quality — Guidance on methods for measuring greenhouse gases (CO2, N2O, CH4) and ammonia (NH3) fluxes between soils and the atmosphere _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 20951:2026
- **Withdrawn / published date:** 2019-06-17 _(verified: appears in the quote below)_

## What the source says

> 69534,IS,,ISO 20951:2019,"Soil Quality — Guidance on methods for measuring greenhouse gases (CO2, N2O, CH4) and ammonia (NH3) fluxes between soils and the atmosphere","Qualité du sol — Recommandations sur les méthodes de mesure des gaz à effet de serre (CO2, N2O, CH4) et des flux d'ammoniac (NH3) entre les sols et l'atmosphère",2019-06-17,1,"['13.020.40','13.080.01']",ISO/TC 190,9599,,[93017],"['en','fr']",37,"<p>This document gives an overview and provides guidance on the main methods available to quantify the exchanges of greenhouse gases (CO<sub>2</sub>, N<sub>2</sub>O, CH<sub>4</sub>) and ammonia (NH<sub>3</sub>) between soils and the atmosphere.</p><p>It is intended to help users to sel

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).