Drip versus surface irrigation in long term environmental modelling of soil-water-plant exposed to saline water

摘要: A physically based soil-water storage model with two surface and drip irrigation scenarios in response to saline water was used the semi-arid Gordonia district South Africa. The (CoupModel) consists of several different modules that couples mass energy flow models dynamic biotic plant its environment. simulation period accounted for non-productive losses, salt accumulation root zone, transport below aquifer via deep percolation. monitoring biomass production respect consumption soil osmotic pressure indicted a decline crop yield due stresses. scenario had better functionality terms wastage as evaporation decreased by 40%. However, productive 20% insufficient leaching fraction while increased drastically entire zone. We found could be flushed out from zone more but increases well increasing possibility salinization beneath aquifer. ecosystem responds differently salinity management practices. Salt source pollution can either stabilizes causing anthropogenic desertification or percolate it resulting long-term salinization. findings our study sever improve schemes similar regions.