Title: Modeling Farmland Soil Organic Carbon Dynamics in Eastern China:Model Validation and Sensitivity Analysis
Abstract: The effect of pH on soil organic carbon(SOC) was added into a preliminary model that simulates farmland SOC turnover.The modified model was further validated against independent observations from three long-term field experiments with various climates,soils,cropping systems and agricultural managements.Model validation shows a fairly good agreement between the simulated and the observed changes in SOC,yielding a correlation coefficient r~2 of 0.96(n=137).Model sensitivity analysis indicated that the most and the least sensitive factors are temperature and soil clay content,respectively.The sensitive significance of the model to input parameters is in descending order of temperature,quantity of incorporated organic carbon,soil pH,initial value of resistant organic matter,precipitation and soil clay.
Publication Year: 2006
Publication Date: 2006-01-01
Language: en
Type: article
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Cited By Count: 6
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