Characteristics and Driving Mechanism of Soil Organic Carbon Content in Farmland of Beijing Plain: Implication for the Fate of Engineered Polymers in Soil

Figure 4

The relationship between soil organic carbon and the input of organic fertilizer. Values in each row with the same letter are not significant (P>0.05). In the equation, x and y, respectively, indicated soil organic carbon content and input amount of organic fertilizer.

(a) Amount relationship between soil organic carbon content and input amount of organic fertilizer

(b) Spatial correlation between soil organic carbon content and input amount of organic fertilizer