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GPS-X Technical Reference

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<strong>GPS</strong>-X Composite Variable Calculations 48<br />

The calculation for nitrogen state variables differs slightly from model to model. In<br />

particular, the nitrogen fractions of biomass and other particulate components have<br />

different names from model to model. Table 4-7 through Table 4-11 shows the nitrogen<br />

composite variable calculations for the mantis, asm1, asm2d, asm3 and newgeneral<br />

models in CNPLIB.<br />

Table 4-8 - CNPLIB Nitrogen Composite Variables - ASM1 Model<br />

STKN XTKN TKN TN<br />

sno 1<br />

snh 1 1 1<br />

sni 1 1 1<br />

snd 1 1 1<br />

xnd 1 1 1<br />

xbh ixbn ixbn ixbn<br />

xba ixbn ixbn ixbn<br />

xi ixun ixun ixun<br />

xu ixun ixun ixun<br />

Table 4-9 - CNPLIB Nitrogen Composite Variables - ASM2d Model<br />

STKN XTKN TKN TN<br />

sno 1<br />

snh 1 1 1<br />

sni 1 1 1<br />

snd 1 1 1<br />

xnd 1 1 1<br />

si insi insi insi<br />

sf insf insf insf<br />

xbp inbm inbm inbm<br />

xbh inbm inbm inbm<br />

xba inbm inbm inbm<br />

xi inxi inxi inxi<br />

xs inxs inxs inxs<br />

<strong>GPS</strong>-X <strong>Technical</strong> <strong>Reference</strong>

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