Lodgepole Pine at Crater Lake: History and Management of the Forest Structure
Appendix E (2)
Comparison of age structure of the principal plant communities. Mean interval between classes was calculated as the mean of the intervals between two consecutive P. contorta age classes at least one of which antedates 1850. Community 3 = P. contorta/Carex – Stipa; 4 = P. contorta/Carex – Lupinus; 8 = A. magnifica var. shastensis – T. mertensiana/Carex – Lupinus; 7 = A. lasiocarpa/Haplopappus/Aster – Elymus; 10 = T. mertensiana/Vaccinum; 11 = Mixed Conifer/Arctostaphylos.
|
Mean |
Mean |
Mean Age of |
Mean No. |
Mean Interval |
|---|---|---|---|---|
|
3 |
175 |
131 |
2.4 |
60 |
|
4 |
115 |
96 |
1.7 |
48 |
|
8 |
122 |
109 |
1.6 |
40 |
|
7 |
112 |
98 |
1.5 |
48 |
|
10 |
128 |
115 |
1.4 |
27 |
|
11 |
151 |
141 |
1.7 |
25 |
*Only plots with multiple age classes.
|
Mean Stand Age Mean Age of Latest Class |
Mean Class Interval Mean No. Classes Per Plot |
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