Pamphlets on Forestry, Volume 41991 |
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Page 292
... factors which determine the region of first diameter increase . No doubt these factors are important , as considerable evidence indicates that in old trees diameter increase is delayed at the base of trunk where insolation is poor and ...
... factors which determine the region of first diameter increase . No doubt these factors are important , as considerable evidence indicates that in old trees diameter increase is delayed at the base of trunk where insolation is poor and ...
Page 293
... factors operative in inducing diameter increase . Certainly as regards all of the above factors the branches are all more favored than the trunk of the tree , yet in the isolated tree E the diameter increase began first in the trunk ...
... factors operative in inducing diameter increase . Certainly as regards all of the above factors the branches are all more favored than the trunk of the tree , yet in the isolated tree E the diameter increase began first in the trunk ...
Page 428
... factors accompanying each physiographic change is an unsolved problem . The ordinary methods of analysis give us the minerals present , but tell us little about their form and availability for plant assimilation . The colorimetric ...
... factors accompanying each physiographic change is an unsolved problem . The ordinary methods of analysis give us the minerals present , but tell us little about their form and availability for plant assimilation . The colorimetric ...
Contents
The Huron River valley 351 | 351 |
their development and ecological conditions | 360 |
The bog plant societies | 429 |
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2d whorl 4th whorl abundant acidity aggregate ray Alnus aments annual ring apex Aronia basin bast fibers Betula bog areas bog plants bog societies bog water branches cambial activity cambium cassandra conifers creosote crystals cutting depressions diameter increase Dicotyledons drainage drained factors Fagales fiber bundles foliar ray forest formation glacial growth habitats HARTIG heartwood hickory Huron June lake larch Larix layers leaves lower Michigan moraine occur parenchyma parenchyma cells peat perianth periderm phloem pine Pinus piñon Pinus rigida pith rays plant societies Platanus plates present Quercus radial region resin canals roots rows Salix sapwood scattered sclerenchyma sclerotic sedge shrubs sieve tubes soil species specimens sphagnum stem stone cells substratum surface swamp tamarack temperature thick tissue tracheids trees trunk tyloses undrained uniseriate rays vegetation vessels Viola blanda walls white oak wood xerophilous xylem zone μ μ μ