Management and Disturbance Effects on Water Yeild

• File Number: 8461.250
• Description: Water Issues
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 2/27/2007
• Author: Polly Hays, C. A, Troendle, J. M. Nankervis, A. Peavy
• Title: Management and Disturbance Effects on Water Yeild
• Water Supply Pro - Doc Type: Report/Study

160
140
? 120
R
? 100
? 80
?
a 60
c?
a 40 -
m
20
0-
= 0.7019x + 15.864 •
RZ = 0.5658 ? .-
. •
,
.:,
AR
M B R
X PSI
0 50 100 150 200 250 300
Age
Figure 4. Basat area/age relationship for pouglas fir. The keyed symbols represent the
average age and basal area of seedling-saplings (youngest), poles (mid-point), and
sawtimber (oldest), by forest. Small symbols represent inventory data used to derive the
line. The age and basal area of poles and sawtimber on the PSI are younger and less
dense than on the other forests.
180
160
,... 140 -
a?
L
? 120
? 100
L 80
a
60
N
A
00 40
20
0
= 1202x + 4.303 '
RZ = 0.9141

•
F 1
• '-, AR
. • • ? MBR
X PSI
0 20 40 60 80 100 120 140 160
Age
Figure 5. Basal area/age relationship for lodgepole pine. The keyed symbols represent
the average age and basal area of seedling-saplings (youngest), poles (mid-point), and
sawtimber (oldest), by forest. Small symbols represent inventory data used to derive the
line. The age and basal area of poles and sawtimber on the PSI are younger and less
dense than on the other forests.
9 2/2/2007