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AMB Express
Fig. 3 | AMB Express

Fig. 3

From: Straw mulching and nitrogen application altered ammonia oxidizers communities and improved soil quality in the alkaline purple soil of southwest China

Fig. 3

Pearson correlation analyses of soil properties and amoA gene abundances of ammonia oxidation archaea (AOA) and bacteria (AOB). Red represents a positive correlation, blue represents a negative correlation, and the larger the circle, the darker the colour, the stronger the correlation. SOC: Soil organic carbon; TN: Total nitrogen; AN: Available nitrogen; NO3−-N: Nitrite-N; NH4+-N: Ammonium-N; AP: Available phosphorus; AK: Available potassium. *, and ** indicate significance correlation at the 5% and 1% probability level, respectively

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