Formerly, bvt values were set to 39.13 (900 g biomass, 23 cm transpiration) for all plant functional types. This issue will specify new bvt values for each plant functional type based on a literature review by @kpalmqui (see below word document and new default values).
Bvt represents water-use efficiency and importantly translates resources available to biomass that can be supposed on those resources. Bvt values are very important as they ultimately influence growth and mortality. Higher bvt values increase plant biomass. Water-use efficiency is know to differ across the plant functional types represented in STEPWAT2.
Bvt values were re-evaluated based on published literature on plant-level water-use efficiency for the species and functional types we simulate.
kpalmqui
commented
1 year ago
Formerly, bvt values were set to 39.13 (900 g biomass, 23 cm transpiration) for all plant functional types. This issue will specify new bvt values for each plant functional type based on a literature review by @kpalmqui (see below word document and new default values).
Bvt represents water-use efficiency and importantly translates resources available to biomass that can be supposed on those resources. Bvt values are very important as they ultimately influence growth and mortality. Higher bvt values increase plant biomass. Water-use efficiency is know to differ across the plant functional types represented in STEPWAT2.
Bvt values were re-evaluated based on published literature on plant-level water-use efficiency for the species and functional types we simulate.
C3 annual forbs: 6 C3 annual grasses: 6 C3 perennial forbs: 8 C3 perennial grasses: 9 C4 perennial grasses: 9 Shrubs: 10 Big sagebrush: 11.5 (source: Sturges 1983) Succulents: 46 (Han and Felker 1996)
Current.WUE.STEPWAT2Values.Justification.docx