CATCHCROP: modeling crop yield and water demand for integrated catchment assessment in Northern Thailand

摘要: Abstract As part of an Integrated Water Resource Assessment and Management project (IWRAM) in Northern Thailand, a Decision Support System is being constructed order to provide guidelines for crop diversification water allocation. The IWRAM software integrates model with hydrological economic models. Presented here the integrated model, called CATCHCROP, which capable simulating yield response deficit fertility depletion. External internal constraints have largely influenced construction. Paucity observed data its reliability required use conceptual recognized algorithms. Linkages models led choice 10-days time step. stand-alone version has been tested against available sets coming from two small catchments. First results are fairly satisfactory but it acknowledged that this kind should not be used at farm plot level assess cropping practices.