Soil Science & Plant Nutrition · 2004 · 16 citations · 15 references
AgricultureAgronomySoil SciencesSoil ChemistrySoil Organic MatterSoil ScienceOrganic Matter AccumulationOrganic Matter TurnoverSoil Carbon ChemistrySoil Carbon FractionationSoil Nutrient CyclingSoil Organic Matter FractionsOrganic ContentSoil Carbon StocksSoil Organic CarbonSoil Organic Carbon DynamicsSoil Organic Carbon EstimationSoil Organic Carbon Stock EstimationSoil Organic Carbon TurnoverSoil Organic Matter Content
Abstract The organic carbon (C) content and natural 13C abundance (Σ13C) of two series of forest and sugarcane soils from Central Luzon and Negros Island in the Philippines were analyzed to determine the origin and turnover of soil organic C in the Asian tropics. The organic C contents and Σ13C values were investigated after a long period (years) of sugarcane cultivation following forest clearing. Conversion of forest areas to field for sugarcane cultivation had been associated with a rapid decrease of the soil organic C content and increase of the soil Σ13C values. The easily mineralisable compartment accounted for 95 and 98.5% of forest- derived C and the half-lives were 1.2 and 1.8 years in Central Luzon and on Negros Island, respectively. On the other hand, sugarcane-derived C accumulation accounted for 25 and 22% of the soil organic C content of natural forests.
15
Organic Carbon in Soils of the World
H. Eswaran, Evert van den Berg, Paul F. Reich · Soil Science Society of America Journal · 1993 · 1.5K citations
俊朗 松永 · Japanese Journal of Soil Science and Plant Nutrition · 1997 · 996 citations