ASPEN IN THE CENTRAL ROCKY MOUNTAIN REGION 
29 
Table 17. — Empirical yield table for even-aged aspen stands — Continued 
SITE 1— Continued 
Age 
Entire 
stand 
Main stand 
Trees 
per acre 
Trees 
per acre 
Average 
diameter 
breast 
high 
Basal 
area 
Volume 
per acre 
Total 
Cord- 
wood 
Mine 
props 
Saw- 
timber 
610 
500 
410 
340 
290 
250 
220 
200 
190 
520 
450 
380 
360 
290 
250 
220 
200 
180 
Inches 
7.0 
7.8 
8.7 
9.5 
10.4 
11.2 
12.1 
13.0 
13.8 
Square 
feet 
148 
154 
161 
166 
172 
177 
181 
184 
186 
Cubic 
feet 
3,550 
4,050 
4,500 
4,850 
5,100 
5,350 
5,600 
5,950 
6,100 
Cubic 
feet 
2,750 
3,250 
3,600 
4,000 
4,300 
4,600 
4,900 
5,150 
5,400 
Linear 
feet 
8,700 
10, 700 
10, 700 
9,000 
6,000 
4,200 
2,800 
1,800 
1,000 
Board 
feet 
4,800 
6,800 
80 years 
90 years ... 
9,000 
lOOvears. . 
11,000 
110 years. . 
13,200 
120vears ... . . 
15,400 
130 years. 
17,400 
140 years 
19,600 
21,600 
150 years 
SITE 2 
30 years . 
5,600 
3,400 
1,200 
940 
730 
580 
460 
380 
320 
270 
240 
210 
220 
650 
900 
710 
580 
490 
400 
330 
270 
210 
160 
110 
14 
78 
114 
124 
132 
140 
146 
152 
158 
162 
166 
170 
40 years... 
4.0 
4.8 
5.4 
6.1 
6.8 
7. 5 
8.2 
8.9 
9.6 
TO. 2 
10.9 
500 
1,350 
2,100 
2,750 
3,250 
3,650 
4,000 
4,300 
4,550 
4,750 
4,900 
150 
750 
1,300 
1,750 
2,200 
2,600 
2,900 
3,200 
3,400 
3,650 
3,850 
50 years . . __ 
GO years.. 
3,500 
6,500 
8,500 
9,500 
8,000 
4,500 
2,700 
1,500 
600 
600 
70 years.. . 
2,000 
3,400 
SOvears 
90 years.. 
4,800 
6,200 
100 years ... 
110 years. 
7,600 
9,000 
10,400 
11,800 
120 years . 
130 years.. .. 
140 years . 
SITE 3 
50 years... ..... 
2,500 
1,120 
850 
670 
530 
440 
360 
310 
260 
700 
800 
650 
520 
410 
320 
240 
170 
100 
4.1 
4.7 
5.3 
5.8 
6.5 
7.1 
7.7 
8.3 
8.9 
72 
104 
114 
122 
128 
134 
138 
142 
146 
500 
1,300 
1,950 
2,500 
2,950 
3,300 
3,600 
3,850 
4,050 
200 
550 
950 
1,250 
1,600 
1,850 
2,100 
2,300 
2,500 
60 years.. . . ._ 
600 
4,000 
6,400 
7,900 
5,300 
2,400 
1,200 
400 
70 years 
150 
80 years . . 
1,000 
1,600 
90 years.. . 
lOOyears 
2.200 
HOvears 
2,800 
120 years... 
3,600 
4,200 
130 years 
SITE 4 
60 years . . 
1,430 
1,030 
800 
620 
500 
410 
340 
740 
700 
550 
430 
320 
220 
140 
4.2 
4.8 
5.3 
5.8 
6.3 
6.9 
7.4 
70 
92 
104 
110 
116 
120 
124 
400 
1,000 
1,600 
2,050 
2,400 
2,700 
2,950 
50 
400 
750 
1,050 
1,300 
1,550 
1,700 
1,800 
4,000 
3,500 
1,800 
700 
100 
SOyears .. 
200 
90 years... 
300 
lOOyears 
400 
110 years 
600 
120 years. . 
800 
