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The incorporation of biochar into soil has been investigated to reduce nitrous oxide emissions from ruminant urine patches. Biochar is a carbon-rich compound manufactured from the thermal decomposition of organic matter in oxygen-deprived conditions at relatively low temperatures.
A 2010 report estimated that sustainable use of biochar could reduce the global net emissions of carbon dioxide (CO 2), methane, and nitrous oxide by up to 1.8 billion tonnes carbon dioxide equivalent (CO 2 e) per year (compared to the about 50 billion tonnes emitted in 2021), without endangering food security, habitats, or soil conservation. [51]
GHG emissions from the top 10 countries with the highest emissions accounted for almost two thirds of the global total. Since 2006, China has been emitting more CO 2 than any other country. [8] [9] [10] However, the main disadvantage of measuring total national emissions is that it does not take population size into account.
Agricultural emissions of nitrous oxide make up 6% of the United States' greenhouse gas emissions; they have increased in concentration by 30% since 1980. [76] While 6% may appear to be a small contribution, nitrous oxide is 300 times more effective at trapping heat per pound than carbon dioxide and has a residence time of around 120 years. [76]
Nitrous oxide (N 2 O) and fluorinated gases (F-gases) play a lesser role in comparison. Emissions of carbon dioxide, methane and nitrous oxide in 2023 were all higher than ever before. [6] Electricity generation, heat and transport are major emitters; overall energy is responsible for around 73% of emissions. [7]
The following table lists the 1970, 1990, 2000, 2010, 2020, 2021, 2022 and 2023 annual per capita GHG [n 1] emissions estimates (in metric tons of CO 2 equivalent per year). The data include carbon dioxide (CO 2), methane (CH 4) and nitrous oxide (N 2 O) from all sources, including agriculture and land use change. They are measured in carbon ...
Biochar Carbon Removal falls into the category of carbon dioxide removal (CDR) technologies. [1] [2] It is considered to be a rapidly implemented and capital-efficient negative emissions technology ideal for smaller scale installations such as farmers, and also to help rural diversification in developing countries.
The Global Carbon Project (GCP) is an organisation that seeks to quantify global greenhouse gas emissions and their causes. [2] Established in 2001, its projects include global budgets for three dominant greenhouse gases—carbon dioxide (CO 2), methane (CH 4), and nitrous oxide (N 2 O)—and complementary efforts in urban, regional, cumulative, and negative emissions.