1. General Model Information

Name: BLUE GRAMA

Acronym: BLUEGRAMA

Contact:

Author(s):

Abstract:

Interseasonal biomass dynamics of blue grama (Bouteloua gracilis) are simulated as functions of soil water potential, soil and canopy air temperatures, and irradiance. The model predicts spring growth, net photosynthesis, leaf dark respiration, root and crown respiration, carbohydrate translocation to leaves, crowns and roots, plant death, and litter fall.Young expanding leaves and mature leaves are included in the model framework. Roots are simulated in three soil layers. Though originally designed to be incorporated into the ELM model , this objective was never reached. Aboveground processes simulated in the BLUE GRAMA model:

• (1) Photosynthesis (nutrient, phenology or leaf age,soil water,temperature,solar radiation)
• (2) Growth (soil water,nutrient,leaf area)
• (3) Carbon allocation (variable allocation to soil water ratio, leaf area,nutrient)
• (4) Death (phenology or leaf age,soil water,temperature).

• (1) Carbon allocation (fixed allocation)
• (2) Root growth (soil water,nitrogen,leaf area)
• (3) Death (soil water,soil temperature)
• (4) Uptake (nitrogen,phosphorous,water)
• (5) Respiration (constant rate).

II. Technical Information

II.1 Executables:

II.2 Source-code:

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References