start:hype_model_description:hype_human_water
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start:hype_model_description:hype_human_water [2019/11/15 08:53] cpers [Constructed wetlands with water regulation capability] |
start:hype_model_description:hype_human_water [2020/02/14 12:55] cpers [Wetland nutrient processes] |
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| The concentration of the wetland (//conc//) is the concentration of soil water in soil layer 1. While calculating wetland nutrient processes only the nutrients in the water volume of the wetland in considered though. After that the nutrient concentration of the upper soil layer is updated. | The concentration of the wetland (//conc//) is the concentration of soil water in soil layer 1. While calculating wetland nutrient processes only the nutrients in the water volume of the wetland in considered though. After that the nutrient concentration of the upper soil layer is updated. | ||
| - | Denitrification of inorganic nitrogen in the wetland is modelled as [[start:hype_model_description:hype_np_soil#denitrification | denitrification in the soil water]]. Sedimentation of organic nitrogen, particulate phosphorus and suspended sediments are simulated (//sed//, g/d). Uptake of inorganic nutrients (IN and SP) are modelled as macrophyte uptake. The macrophytes are assumed to cover a part of the wetland area (//fracarea//). The covered fraction is calculated as the part that is shallower than a production depth (//proddep//) assuming the wetland area is decreaseing linear with depth until twice the average depth of the wetland. The macrophytes are assumed to give residuals of equal amount of nutrient back to the sediment (i.e. immobile organic nutrient pools of soillayer one). The macrophyte uptake process (//upt//, g/d) depends on a rate parameter (//uptpar//), macrophyte fraction of wetland area, temperature (//tmpfcn//) and total phosphorus concentration (//TPfunc//). The temperature and TP functions are similar to the ones used by [[start:hype_model_description:hype_np_riv_lake#primary_production_and_mineralization | primary production in lakes]]). The temperature function use 5- and 30-day mean air temperature (//T5, T30//). The half saturation concentration of TP is 0.05 mg/L (//hsatTP//). The sedimentation is limited to 99.9% of the substance in the wetland water, while macrophytes are limited to 50% of the dissolved inorganic nutrients. | + | Denitrification of inorganic nitrogen in the wetland is modelled as [[start:hype_model_description:hype_np_soil#denitrification | denitrification in the soil water]]. Sedimentation of organic nitrogen, particulate phosphorus and suspended sediments are simulated (//sed//, g/d). Uptake of inorganic nutrients (IN and SP) are modelled as macrophyte uptake. The macrophytes are assumed to cover a part of the wetland area (//fracarea//). The covered fraction is calculated as the part that is shallower than a production depth (//proddep//) assuming the wetland area is decreasing linear with depth until twice the average depth of the wetland. The macrophytes are assumed to give residuals of equal amount of nutrient back to the sediment (i.e. immobile organic nutrient pools of soillayer one). The macrophyte uptake process (//upt//, g/d) depends on a rate parameter (//uptpar//), macrophyte fraction of wetland area, temperature (//tmpfcn//) and total phosphorus concentration (//TPfunc//). The temperature and TP functions are similar to the ones used by [[start:hype_model_description:hype_np_riv_lake#primary_production_and_mineralization | primary production in lakes]]). The temperature function use 5- and 30-day mean air temperature (//T5, T30//). The half saturation concentration of TP is 0.05 mg/L (//hsatTP//). The sedimentation is limited to 99.9% of the substance in the wetland water, while macrophytes are limited to 50% of the dissolved inorganic nutrients. |
start/hype_model_description/hype_human_water.txt ยท Last modified: 2024/02/21 09:14 by cpers
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