Agriculture-Induced N2O Emissions and Reduction Strategies in China

Abstract

Greenhouse gases are one of the most important factors in climate change, their emissions reduction is a global problem. Clarifying the spatial patterns of N2O, as an important component of greenhouse gases, it is of great significance. Based on the planting and breeding data of China from 2000 to 2019, this paper measures the N2O emissions of agricultural systems, and uses kernel density to explore the spatial distribution differences between the eight major economic zones. Finally, the proposed emissions reduction countermeasures are provided. The research results show that the N2O emissions of China’s agricultural system showed a trend of increasing first and then decreasing, and in 2019, the national N2O emissions were 710,300 tons, agricultural land emissions and animal husbandry emissions were the main sources of N2O emissions. The difference in N2O emissions by province was significant, the concentration trend was more prominent, and the differences of N2O emissions between provinces and regions were diverse. In order to achieve the reduction in N2O emissions, it is necessary to carry out low-carbon production of staple grains for different parts and economic zones, and focusing on low-carbon production in the Central Part and the West Part, as well as the Northeast and the Greater Southwest zones, is essential.

Progress and Hotspots of Research on Land-Use Carbon Emissions: A Global Perspective

“…Carbon emissions from agricultural activities are also an essential source of carbon emissions. The irrational use of agricultural inputs such as fertilizers and insecticides, the excessive use of agricultural land, and the devastation of vegetation brought on by overgrazing and over-cultivation have affected the carbon balance of agroecosystems and exacerbated the carbon emissions of farming systems, particularly in developing countries [95,96]. Johnson et al argued that agricultural carbon emissions mainly originate from agricultural waste, enteric fermentation, manure management, rural energy use, rice fields, and biological burning [97].…”

The growth of the Indian agro-based industry and its emissions: industrial relevance of the environmental Kuznets curve hypothesis

“…All studies in Table 1 have considered CO 2 emissions to measure environmental degradation as it is one of the most dominant GHGs. However, the agro-based industry is (Hassan et al, 2022;Wang et al, 2022). In the entire ecosystem of the agriculture sector, the application of manure and synthetic fertilizers are collectively the largest contributors to N 2 O emissions (FAO, 2020).…”

“…However, the agro-based industry is better known for heavy emissions of N 2 O. The industry is responsible for over half of the global N 2 O emissions scale (Hassan et al , 2022; Wang et al , 2022). In the entire ecosystem of the agriculture sector, the application of manure and synthetic fertilizers are collectively the largest contributors to N 2 O emissions (FAO, 2020).…”

Trends and driving forces of agricultural carbon emissions: A case study of Anhui, China

“…With the growing of global warming, agricultural disasters have broken out repeatedly in Anhui Province, which renders the agricultural production in Anhui Province face new challenges. In order to cope with the adverse impact of climate warming on the sustainable development of agriculture in Anhui Province, it is necessary to formulate countermeasures and actively carry out agricultural low-carbon emission reduction work [ 11 , 12 ].…”