Spatial heterogeneity of soil properties in planted mixed forests in the rocky desertification areas of the Wuling Mountain.

Statistical analysis of correlation between soil physical and chemical properties As shown in ( Table 2 ), there was a highly significant negative correlation ( P < 0.01) between soil bulk density and soil moisture content, capillary water holding capacity, maximum water holding capacity, minimum water holding capacity, and there was a significant negative correlation ( P < 0.05) with capillary porosity and total porosity, which indicated that the higher the soil density and the tighter the structure were, the lower the porosity was, and the moisture content of soil was reduced accordingly.

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It was found that soil nutrients showed a decreasing trend with increasing soil depth in the artificial mixed forest and abandoned land.

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