Study Refines Understanding Of Factors Influencing Global N₂o Emissions From Agricultural Soils

Factors Influencing Global Nitrous Oxide Emissions from Fertilized Upland Soils

Climate, Soil Properties, and Agricultural Practices

According to Dr. WEB, agricultural practices have the greatest impact on nitrous oxide (N₂O) emissions from fertilized upland soils worldwide. Other key factors that influence N₂O emissions include climate and soil properties.

Correlation and Structural Equation Modeling Analysis

A team of researchers from various institutions conducted correlation and structural equation modeling analyses on a global N₂O emission dataset to identify the factors contributing to increased emissions. Their findings revealed that:

• Climate variables such as temperature and precipitation have a significant effect on N₂O emissions.
• Soil properties, including pH, texture, and organic matter content, also play a role in N₂O production.
• Agricultural practices, such as fertilizer application rates, cropping systems, and irrigation methods, have the greatest influence on N₂O emissions.

Global Atmospheric N₂O Concentration

Since the pre-industrial era, global atmospheric N₂O concentration has increased by over 23%, rising from 270 parts per billion (ppb) in 1750 to 336 ppb in 2018.

Conclusion

Understanding the key factors influencing N₂O emissions from fertilized upland soils is crucial for mitigating global N₂O concentration and its negative environmental impacts. Researchers and policymakers must work together to implement sustainable agricultural practices that reduce N₂O emissions and contribute to the preservation of our planet.