Pamphlets on Forestry, Volume 41991 |
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Page 289
... temperature , moisture , and sunshine figures for the intervals between the bud opening and wood formation are found in the following table . The mean temperature for the day is considered as the number of heat units for that day , and ...
... temperature , moisture , and sunshine figures for the intervals between the bud opening and wood formation are found in the following table . The mean temperature for the day is considered as the number of heat units for that day , and ...
Page 419
... Temperature . - In its temperature relations both the topography and the character of the substratum combine to influence the bog habitat . It has long been noted by agricultural writers that reclaimed bog areas are particularly subject ...
... Temperature . - In its temperature relations both the topography and the character of the substratum combine to influence the bog habitat . It has long been noted by agricultural writers that reclaimed bog areas are particularly subject ...
Page 420
... temperature . It follows that of the various situations in bog areas those most liable to extreme low temperatures in the spring are in the cassandra and tamarack zone . Since their maximum temperatures are con- siderably below those of ...
... temperature . It follows that of the various situations in bog areas those most liable to extreme low temperatures in the spring are in the cassandra and tamarack zone . Since their maximum temperatures are con- siderably below those of ...
Contents
The Huron River valley | 402 |
their development and ecological conditions | 360 |
The bogplant societies | 429 |
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2d whorl 4th whorl abundant acidity Alnus aments apex apical shoot Aronia average basin bast fibers Betula bog areas bog plants bog societies bog water branches cambial activity cambium cassandra conifers creosote crystals cutting depressions diameter increase Dicotyledonous drainage drained factors Fagales fiber bundles foliar ray forest formation genera glacial growth habitats HARTIG heartwood hickory Huron June lake larch Larix layers leaves lobes lower mature Michigan moraine occur parenchyma parenchyma cells peat perianth periderm phloem pine Pinus piƱon 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 twigs tyloses undrained uniseriate rays vegetation vessels Viola blanda walls white oak wood xerophilous xylem zone