Comparisons of soil organic carbon enrichment and loss in sediments among red soil, black soil, and loess in China

Abstract Water erosion could cause wide and serious soil organic carbon (SOC) loss, but differences in SOC loss enrichment sediments among red soil, black loess China have received less attention. This study investigates the transport of generation regulation runoffs during process by collecting data from indoor or outdoor artificial simulated rainfall experiments selecting typical regional intensity slope gradient for bare cultivate slopes as well 5–8 m length 1.5–2 width runoff plots pans. Then, change three widely distributed seriously eroded soils, south to north China, is clarified. Results show that stable value growth rate rates followed following order: < loess. The was more sensitive than those two other soils. ratio ( ERocs ) higher this difference increases decreases. generally has a negative exponential relationship with it logarithmic high aggregate clay contents. content determine different In addition, provides recommendations improving dynamic models under water erosion.