3. Results
The total mean of SBD of the mud flat stands (1.72 g cm−3
)
was higher than that of the mangrove stands (1.40 g cm−3
)
(Table 2). The distribution of SBD in the mangrove stands increased
significantly from 1.27 g cm−3
at depth 0–10 cm up to 1.56 g cm−3
at depth 20–30 cm, and then decreased to 1.41 g cm−3
at depth
30–40 cm. On the other hand, the distribution of SBD in the
mud flat stands increased significantly from 1.41 g cm−3
at depth
0–10 cm up to 1.88 g cm−3
at depth 30–40 cm (Fig. 2). The
SOC content in the mangrove stands declined significantly from
20.0 g C kg−1
at depth 0–10 cm (it contains 32.4% of the SOC
content) to 11.4 g C kg−1
at depth 20–30 cm (Fig. 3), while SOC
content in the mud flat stands declined significantly with depth
from 9.0 g C kg−1
at depth 0–10 cm (it contains 54.0% of the SOC
content) to 1.9 g C kg−1
at depth 30–40 cm. The total SOC content