Planned Subsystems

Existing Subsytsems

Plant Growth

The plant growth model requires:

• Daily Maximum Temperature
• Daily Minimum Temperature
• Daily Solar Radiation
• Daily Volumetric Soil Moisture by Depth
• Plant Functional Group
• Percent Maximum Expression of Plant Functional Group
• Plant Functional Group Growth Parameters:
  • LAI Leaf Area Index
  • Dry Matter to Radiation ratio
  • Suppression Temperature
  • Base Temperature
  • Leaf Turnover
  • Heat Unit Accum. at Seed
  • Heat Unit Accum. at Death
  • Rooting Depth
  • Max Above Ground Biomass
  • Leaf/Above Ground Biomass Ratio
  • Interception Values
    • SAI Stem Area Index
    • Leaf Water Store Capcaity
    • Stem Water Store Capcaity
    • Fraction of Water Transferd from Leaf to Stem
  • Stem Turnover
  • Cold Unit Accumulation to Freeze Leaf Damage
  • Leaf Green to Dead Rate
  • Leaf Green to Dead Rate During Dormancy
  • Plant growth form values
    • Canopy Base Diameter
    • Canopy Crown Diameter
    • Height at Canopy Start
    • Height at Begining of Canopy Curvature
    • Canopy Height

The plant growth model produces:

• Intermediate Results
  • Heat Units
  • Lost Heat Units
  • Cold Units
  • Lost Cold Units
  • Photosenthetically Available Radiation
  • Leaf Turnover
  • Leaf Water Storeage
  • Stem Water Storeage
  • Leaf to Stem Drip Ratio
  • Stem Turnover
  • Temperatutre Stress
  • Water Stress
  • Leaf Growth
  • Stem Growth
  • Effective Leaf Area Index
  • Effective Stem Area Index
  • Canopy Height
  • Rooting Depth
  • Effective Green Lai
  • Leaf Death
  • Grazer Stem Consumption
  • Grazer Green Leaf Consumption
  • Grazer Dead Leaf Consumption
• Accumulated Results
  • Standing Crop
  • Standing Stem
  • Standing Green Leaf
  • Standing Dead Leaf
  • Heat Unit Accumulation
  • Cold Unit Accumulation
  • Rooting Depth
  • Canopy Height
  • Effective Leaf Area Index
  • Effective Stem Area Index

Hydrologic

The Hydrologic model requires:

• Daily Rainfall
• Daily Maximum Temperature
• Daily Minimum Temperature
• Daily Solar Radiation
• Effective Leaf Area Index
• Rooting Depths and Percentages
• Surface Conditions
  • SCS Condition Curve Number
  • Surface Water Storeage Capacity
  • Slope
  • Initail Snowpack
• Soil Layer Depth
• Soil layer parameters
  • Rock Factor
  • Saturated Hydraulic Conductivity
  • Bulk Density
  • Water Content at 0, -0.3333, -15 bar

The Hydrologic model produces:

• Intermediate Results
  • Unlimited Water Storeage
  • Field Capacity
  • Matrix Flow Down
  • Evaporation
  • Percolation
  • Transpiration
  • Drainage
  • Surface Ponding moisture
  • Snowmelt
  • Water Runoff
  • Infiltration
  • Throughfall
  • Interception
  • stemflow
• Accumulated Results
  • moisture
  • Snow Pack
  • Runoff
  • Surface Ponding

Grazing

The Grazing model requires:

• For each grazed species
  • Leaf in Fast Growth Preference
  • Leaf in Declining Growth Preference
  • Leaf in Dormancy Preference
  • Dead Leaf Preference
  • Stem in Fast Growth Preference
  • Stem in Declining Growth Preference
  • Stem in Dormancy Preference
  • Dead Stem Preference
• Forage Demand

The Grazer Model produces

• Intermediate Results
  • Stocking Rate
  • Prefered Forage Consumed
  • Desireable Forage Consumed
  • Undesireable Forage Consumed
  • Non-Consumed Forage Consumed
  • Toxic Forage Consumed
  • Total Forage Consumed
  • Total Forage Available
  • Forage Value Index
• Accumulated Results
  • Grazer Demand

Weather

The Weather model requires:

• Weather Generator Coeffecients or
• Historical Values

The Weather model produces:

• Daily Rainfall
• Daily Maximum Temperature
• Daily Minimum Temperature
• Daily Solar Radiation

Planned Subsytsems

Land Management