What impact does AGRICULTURE have on CLIMATE CHANGE?

à mon avis c'est réversible, les changements climatiques ont un mauvais impact sur l'agriculture et les différentes manipulations telles que l'utilisation eccessive des pesticides et le non respect de l'environnement resulte aussi des changements climatiques.

Environmentally sound industrialization,increase using Bio fuel, tree plantation and using natural resources in agricultural production can protect global warming and desertification.

agriculture is itself responsible for an estimated one third of climate change. It is generally agreed that about% of carbon dioxide emissions, are produced by agricultural sources, mainly deforestation, the use of fossil fuel-based fertilizers, and the burning of biomass. Most of the methane in the atmosphere comes from domestic ruminants, forest fires, wetland rice cultivation and waste products, while conventional tillage and fertilizer use account for% of the nitrous oxides. According to the Intergovernmental Panel on Climate Change, the three main causes of the increase in greenhouse gases observed over the past years have been fossil fuels, land use, and agriculture.

Over the past centuries, human ingenuity has led to technological advances in agriculture that have allowed substantial increase in crop yields, in part stimulated to meet population growth. Intensive agricultural methods are reported to have detrimental effects on the environment.

The agricultural sector has become one of the main driving forces in gas emissions and land use effects. For example, agriculture contributes to greenhouse gas increases through land use in different ways:

• CO2 emissions linked to deforestation in temperate regions: where forests and woodlands are cleared to make room for fields and pastures.
• Methane emissions from rice cultivation and enteric fermentation in cattle
• Nitrous oxide emissions from fertilizer applications

Agricultural processes comprise% of methane emissions, roughly% of nitrous oxide emissions, and virtually all carbon dioxide emissions tied to land use. Deforestation for land cleaning purposes also affects regional carbon reuptake, which can result in increased concentrations of CO2, the dominant greenhouse gas. Worldwide, livestock production occupies% of all land used for agriculture, or% of the land surface of the Earth.