Figure 4

Aggregates-size distribution as determined by wet sieving for the 0–10 cm, 10–20 cm and 20–30 cm layers in Qingkou saltern (A–D) and Jinhai farm (E–H). P1: 0–10 cm layer in K. virginica plantation. P2: 10–20 cm soil layer in K. virginica plantation. P3: 20–30 cm soil layer in K. virginica plantation. C1: 0–10 cm soil layer in control plot. C2: 10–20 cm soil layer in control plot. C3: 20–30 cm soil layer in control plot. Data are means ± SE of five replicates. Comparisons among means were made with the Least Significant Difference (LSD) test.