Deconstructing greenhouse gas (GHG) emissions from agriculture and land-use – University of Copenhagen

Deconstructing greenhouse gas (GHG) emissions from agriculture and land-use

Agricultural production and land-use are responsible for ca. one-third of the negative human effect on climate change. The Kaya-Porter identity (KPI) is a way to decompose greenhouse gas (GHG) emissions, which cause climate change, from agriculture and land-use.

The KPI enables us to analyze how much the different elements of the production system are contributing to GHG emissions and how these could be targeted in actions for reducing emissions and thereby mitigating climate change. It provides you the control handles, which you can address and adjust to alter the effect on climate change.

The KPI is very new and a novel concept and has so far been used on a national level (Bennetzen, 2012; Bennetzen, et al., 2012) and is currently being applied on a global level to capture the major trends and identify major differences between agricultural and GHG emissions between world regions.


Bennetzen, E.H. (2012): Agriculture and Climate Change - Analysing Greenhouse Gas Emissions using the Kaya-Porter Identity. Lambert Academic Publishing, Germany. ISBN-978-3-8484-8928-2.

Bennetzen, E.H., Smith, P., Soussana, J.F. & Porter, J.R. (2012): Identity-based estimation of greenhouse gas emissions from crop production: Case study from Denmark. European Journal of Agronomy. Vol. 41, pp. 66-72.