Impact of different models of agriculture on greenhouse gases (GHG) emissions: A sectoral approach

Abstract

It is estimated that farm practices are responsible for as much as 25–30% of greenhouse gas (GHG) emissions. The scale of such emissions from agriculture depends on the model to which that sector conforms. The aim of this study was to investigate how the attributes of particular models of agriculture (i.e. labour, capital, land productivity, machinery, chemical, energy and water inputs) affect GHG emissions at the sectoral level. We test the hypothesis that the productivity of capital and labour as well as the intensity of inputs affect GHG emissions differently in countries with varying levels of economic development. The results indicate that in the poorest countries, a significant barrier to sustainable development is mechanization. In moderately wealthy countries there is a lack of stimuli to implement energy-saving technologies, while in the richest countries it is desirable that mechanization and chemicalization be reduced in favour of energy-saving technologies.