extremely significantp < 0.001
The soil ammonium nitrogen, which was different from the changes in other soil physicochemical properties, increased by about 0.5 mg·kg −1 with an extremely significant increasing trend ( p < 0.001).
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Cracks Reinforce the Interactions among Soil Bacterial Communities in the Coal Mining Area of Loess Plateau, China.
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0.0010
0.0010
The sentences
a significant trendp < 0.001
The soil temperature dropped by about 5 °C in LC with a significant trend ( p < 0.001). pH values decreased by about 0.4, and the downward trend was significant ( p < 0.05); the soil showed weak acidity after coal mining cracks.
From the point of view of space-time interchange, after the formation of coal mining cracks, the soil temperature, pH, OM, AP, and AK showed decreasing trends, but the AN showed an increasing trend. 3.2.