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Carbon Allocation In Dry and Wet Years
A Simulation Using BIOME-BGC for Excel Joshua Gray 9/2007
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Model Initialization Meteorological Data for Missoula, MT from Tree specific parameters typical of evergreen needle leaf stands 1m deep loamy soil: 30% sand, 50% silt, 20% clay
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1976 and 1980 Precipitation 1976: 24.1cm total precipitation
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GPP in Wet and Dry Years
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1980 Leaf C values higher overall
We observe the potential decreasing as additional Leaf C is generated Rate of Leaf C addition decreases with decreasing soil water potential Amount of Leaf C decreases when we reach the point of stomatal closure
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Ratio of NPP/GPP is essentially constant: 1976: 50% and 1980: 57% (intercept is forced through the origin) This is higher than reported in the text (Oregon Transect, Harvard Forest, Australia, New Zealand all about 46%)
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