부산대학교 도서관

The gradual increment of anthropogenic aerosol pollutants, changes the properties of atmosphere and causes a significantly negative impacts on agriculture. The present study evaluated the long term aerosols and weather impact on the maize yield during the time period from the years 1998 to 2019 in India. The multiple linear regression analysis is carried out between the dependent variable (maize yield) and independent variables (AOD and weather). The performance of multiple linear regression analysis is found excellent between the dependent and independent variables in terms of the coefficient of determination $(\ R^{2}=0.945)$, root mean squared error (RMSE = 0.515 tons/hectare) and bias (0.0 tons/hectare). The atmospheric aerosols impact on the weather parameters is also evaluated because the changes in weather parameters due to aerosol is also affected the crop yield. The linear regression analysis is carried out to evaluate the aerosols impact on weather parameters and it is observed that the yearly increases in AOD impacts more on temperature variations than the fraction of absorbed photosynthetically active radiation (FAPAR) variation. The overall loss in maize yield is found approximately 8.8% per year due to variations in the weather variables with the increment of anthropogenic aerosol pollutants during 1998–2019 over India. In future, the climate warming and increment of aerosols may have differing impacts on crop yield and should be jointly considered in any assessment of Indian food security.