Abstract
Soil organic carbon (SOC) content and density (SOCD) were studied under six land use patterns of Natural forest, Schima superba plantation, Coniferous forest, Bamboo forest, Orchard, and Abandoned land in the Dongjiang River valley of Guandong province, China. The results showed that surface soil (0~25 cm) organic carbon content and soil organic carbon density had significant difference (P -1) > Schima superba planted forest (21.1±0.79 g•kg-1) > Bamboo (20.9±0.53 g•kg-1) > Coniferous forest (15.65±0.93 g•kg-1) > Orchard (15.22±0.61 g•kg-1) > Abandoned land (8.69±0.38 g•kg-1), and Natural forest (67.16±2.31 kg•m-2) > Bamboo (60.08±1.53 kg•m-2) > Schima superba plantation (52.8±1.86 kg•m-2) > Coniferous forest (47.17±2.66 kg•m-2) > Orchard (43.03±1.56 kg•m-2) > Abandoned land (31.48±1.2 kg•m-2), respectively. Natural forest was the highest in both soil organic carbon content and soil organic carbon density, and Abandoned land the lowest. The findings suggested that a close-to-nature way of afforestation and forest management played an important role in increasing forest carbon sinks.
Published Version
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