OK, I found some things that might be useful:

Ci = A constant of proportionallity relating leaf weight to tree diameter.

SLA = actually the leaf weight above tree n, the sum of the weight of the leaves on all trees taller then tree n.

soooo... when i get my simforest working again (which I optimistically am hoping is before our meeting today) i will see what equations they give in their equation list. I'm assuming that SLA depends on values provided from other equations, particularly one or ones that deal with leaf weight.

~Erin K. Pfeil