does agriculture produce greenhouse gases

image

Agriculture emits an estimated 10.5 percent of total U.S. greenhouse gases; however, agriculture also provides opportunities to reduce greenhouse gas emissions and remove carbon dioxide from the atmosphere.

How does agriculture contribute to greenhouse gases?

At every stage, food provisioning releases greenhouse gases into the atmosphere. Farming in particular releases significant amounts of methane and nitrous oxide, two powerful greenhouse gases. Methane is produced by livestock during digestion due to enteric fermentation and is released via belches.

Is agriculture the largest producer of greenhouse gases?

Farms emitted 6 billion tonnes of GHGs in 2011, or about 13 percent of total global emissions. That makes the agricultural sector the world’s second-largest emitter, after the energy sector (which includes emissions from power generation and transport).

Does agriculture produce carbon dioxide?

Using estimates from 2005, 2007 and 2008, the researchers found that agricultural production provides the lion’s share of greenhouse-gas emissions from the food system, releasing up to 12,000 megatonnes of carbon dioxide equivalent a year — up to 86% of all food-related anthropogenic greenhouse-gas emissions.

Why is agriculture bad for climate change?

Dominant sources of agricultural greenhouse gases (GHGs) include carbon dioxide (CO2) from tropical deforestation, methane (CH4) from livestock and rice production, and nitrous oxide (N2O) from fertilizing or burning croplands. Agriculture is responsible for about half of global methane emissions.

What produces the most greenhouse gas?

Energy sector generates the most greenhouse gas emissions. Emissions related to energy are tied to various sources including electricity and heat that power households, manufacturing, construction, and transportation. Industrial processes unrelated to energy generation also cause emissions.

What are the top 3 sources of greenhouse gases?

Fossil fuels include coal, oil, and natural gas. When these are burned or when nuclear energy is created, the emissions don’t have anywhere to go, so they stay trapped within our atmosphere. Green energy (also known as clean energy or renewable energy) is the key to reducing this huge source of greenhouse gases.

What are the top 3 sources of greenhouse gas emissions?

Most of the world’s greenhouse gas emissions come from a relatively small number of countries. China, the United States, and the nations that make up the European Union are the three largest emitters on an absolute basis. Per capita greenhouse gas emissions are highest in the United States and Russia.

Which food is responsible for the most greenhouse gas production?

Rice is the largest contributor among plant-based foods, producing 12% of the total greenhouse gas emissions from the food sector, followed by wheat (5%) and sugarcane (2%).

image

Summary

Mitigation

Agriculture is often not included in government emissions reductions plans. For example, the agricultural sector is exempt from the EU emissions trading scheme which covers around 40% of the EU greenhouse gas emissions.
Several mitigation measures for use in developed countries have been proposed:
• breeding more resilient crop varieties, and diversification of crop species

Overview

Agricultural activities emit the greenhouse gases carbon dioxide, nitrous oxide, and methane.
Carbon dioxide emissions come from things such as tillingof fields, planting of crops, and even the shipment of crops or food cultivated to markets for revenue. Agricultural related emissions of carbon dioxide account for around 24% of th…

Land use

Agriculture contributes to greenhouse gas increases through land use in four main ways:
• CO2 releases linked to deforestation
• Methane releases from rice cultivation
• Methane releases from enteric fermentation in cattle

Livestock

Livestock and livestock-related activities such as deforestation and increasingly fuel-intensive farming practices are responsible for over 18% of human-made greenhouse gas emissions, including:
• 9% of global carbon dioxide emissions
• 35–40% of global methane emissions (chiefly due to enteric fermentation and manure)

Soil erosion

Large scale farming can cause large amounts of soil erosion, causing between 25 and 40 percent of soil to reach water sources, with it carrying the pesticides and fertilizers used by farmers, thus polluting bodies of water further. The trend to constantly bigger farms has been highest in United States and Europe, due to financial arrangements, contract farming. Bigger farms tend to favour monocu…

Global estimates

In 2019 the IPCC reported that 13%-21% of anthropogenic greenhouse gasses came specifically from the Agriculture, Forestry, and Other Land Uses Sector (AFOLU). Emissions from agriculture of nitrous oxide, methane and carbon dioxide make up to half of the greenhouse-gases produced by the overall food industry, or 80% of agricultural emissions.

See also

• Agroecology
• Climate change and fisheries
• Climate change and meat production
• Effects of climate change on agriculture

Leave a Comment