Biological Kingdoms

1
SIMULATION YEAR 10
-------BIOMASS--------
SPP DBH (10-CM CLASSES) SUM DENSITY BASAL
AREA WOODY FOLIAGE LITTER DBH
(/HA) (M2/HA) T/HA T/HA
T/HA CM PM 1074 0 0 0 0 1074
2577.6 1.4 3.2 2.6 .2 2.7
PG 291 0 0 0 0 291 698.4 .7
1.8 .8 .1 3.6 BP 691 0 0
0 0 691 1658.4 6.2 20.2 .5
.5 6.9 PT 486 0 0 0 0 486
1166.4 3.7 11.8 .3 .4 6.4
SUM 2542 0 0 0 0 2542 6100.8 12.0
37.1 4.3 1.5 5.0 FOREST FLOOR
ORGANIC LAYER BIOMASS 18.818 T/HA DEPTH
.032 M MOSS BIOMASS .00 T/HA TURNOVER
16.1 YEARS N MINERALIZATION 6.6 KG/HA N
.0105 SITE CHARACTERISTICS MOISTURE FFOL
1.198 MINERAL SOIL .173 DRY-DAYS .000
GROWING SEASON 1209.0 ACTIVE LAYER 1.486
M LEAF AREA INDEX 3.100 AVAILABLE LIGHT
.50 AVAILABLE NITROGEN 23.1 KG/HA
2
soil.in
NYEARS 150 IPRT 10 IFIR 0 ITYP 0 ISOIL
1 IROW 1 JCOL 5 AREA 833.33 180. 30. .0000
0.00 10. 350. 0 1.00 .53 .38 .06 .48 .008 5. 8.
3 3 1 1 1 1
3
Succession in the Boreal Forest

• Site conditions exert considerable influence on
  successional trajectories.
• Boreal forest is a disturbance forest that is
  perpetuated in a youthful state by frequent
  fires.

4
Environmental Changes with Succession in Boreal
Forests

• Thickness of organic layer increases
• Decrease in nutrient availability
• Decrease in summer soil temperatures
• Decrease in depth of the active layer
• Decrease in soil drainage (waterlogging)
• Increase in frost heave and thrust

5
(No Transcript)