c     ------------------------------------------------------------------
c     file 's1phys.inc'

c     This common block contains the state variables relating to
c     some of physical soil layer properties.

c     Parameter include files:  p1werm.inc

c     + + + VARIABLE DECLARATIONS + + +

      real             asdblk(0:mnsz, mnsub)
      real             asdsblk(mnsz, mnsub)
      real             asdwblk(mnsz, mnsub)
      real             asdblk0(mnsz, mnsub)
      real             asdpart(mnsz, mnsub)

      common / s1phys /
     r                  asdblk, asdsblk, asdwblk, asdblk0, asdpart

c     + + + VARIABLE DEFINITIONS + + +

c     asdblk  - Soil layer bulk density for each subregion (Mg/m^3)

c     asdsblk - Soil layer settled bulk density (Mg/m^3)

c     asdwblk - Soil layer bulk density at 1/3 bar for each
c               subregion (Mg/m^3)

c     asdblk0 - Soil layer bulk density from previous day
c               for use in hydro to update parameters based on bulk density changes

c     asdpart - Soil layer particle density adjusted from mineral only
c               to include organic matter content