Validation of the EPIC model using a long-term experimental data on the semi-arid Loess Plateau of China
The EPIC model has been widely used in the world as an effective decision support tool in irrigation allocation and scheduling. However, there are still some uncertainties surrounding the soil water estimation of the EPIC model. In this paper the EPIC model was validated for soil water estimation in a semi-arid region, based on a set of long term experimental data on the Loess Plateau. Validation results showed that: (1) The EPIC model can be used as an effective tool in the semi-arid area, to research the dynamic change of soil water in different rainfall years and in different soil layers for different cropping systems, with reasonable validation for its input database. (2) Calculating equations for potential evapo-transpiration and soil moisture, the amount and variance of seasonal rainfall as well as the soil parameters such as sand content, silt content, loam content and bulk density affected the precision of simulated soil water by the EPIC model. A decision of these factors should be made wisely when its database is going to built up for the EPIC model in a special environment
EPIC model Soil water Semi-arid area Loess Plateau
Xue Chun Wang Jun Li Muhammad Naveed Tahir Ming De Hao
College of Agronomy, Northwest A &F University, Yangling, Shaanxi 712100, China Institute of Soil an College of Agronomy, Northwest A &F University, Yangling, Shaanxi 712100, China Department of Agrono Institute of Soil and Water Conservation, CAS&MWR, Yangling, Shaanxi 712100, China
国际会议
南昌
英文
976-986
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）