Fig. 4: Impact pattern of multiple factors on emission factors by machine learning.
From: Enhanced nitrification in higher pH soils moderates ammonia emissions in global croplands
Impact of pH on EF for maize (a), wheat (b), and paddy rice (c); d Importance ranks of environmental factors; impacts of temperature (e), SOC (f), clay (g), CEC (h), and water input (i) on EF. The black lines are the smooth curves.
