The Forester: A Practical Treatise on British Forestry and Arboriculture for Landowners, Land Agents, and Foresters, Volum 2W. Blackwood and Sons, 1905 |
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Side ix
... girths and superficies ( basal area ) , corresponding with diameters from 1 to 48 inches 402 II . Cubic contents of round logs , calculated by customary British measurement . 403 III . Average yield tables for Scots Pine , Spruce ...
... girths and superficies ( basal area ) , corresponding with diameters from 1 to 48 inches 402 II . Cubic contents of round logs , calculated by customary British measurement . 403 III . Average yield tables for Scots Pine , Spruce ...
Side 140
... girth is very slow , the bark is shed so gradually that lichens are able to fix themselves on this . And by mechanically closing the lenticels or air - holes of the bark through which the tree transpires and absorbs oxygen , the health ...
... girth is very slow , the bark is shed so gradually that lichens are able to fix themselves on this . And by mechanically closing the lenticels or air - holes of the bark through which the tree transpires and absorbs oxygen , the health ...
Side 153
... girth is con- tinued for one or more years above and below ( but chiefly above ) the dead ring of bark reaching down to the cambium . 3. Phoma pithya occasions a cankerous disease on twigs and branches of Douglas Fir and Scots Pine ...
... girth is con- tinued for one or more years above and below ( but chiefly above ) the dead ring of bark reaching down to the cambium . 3. Phoma pithya occasions a cankerous disease on twigs and branches of Douglas Fir and Scots Pine ...
Side 209
... girth- classes than to the largest class of big stems with large crowns overshadowing a large area and intercepting light rainfall and dew . Under great old Beech - trees the self - sown seedlings are few and comparatively weakly , and ...
... girth- classes than to the largest class of big stems with large crowns overshadowing a large area and intercepting light rainfall and dew . Under great old Beech - trees the self - sown seedlings are few and comparatively weakly , and ...
Side 214
... girth , and therefore in power of resistance . But when crops are allowed to grow crowded , thinnings should be very cautiously made and frequently repeated , because the rapidly drawn - up stems have little power of resisting pressure ...
... girth , and therefore in power of resistance . But when crops are allowed to grow crowded , thinnings should be very cautiously made and frequently repeated , because the rapidly drawn - up stems have little power of resisting pressure ...
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The Forester: A Practical Treatise on British Forestry and ..., Volum 2 John Nisbet Uten tilgangsbegrensning - 1925 |
Vanlige uttrykk og setninger
acre age-classes annual falls annual rings antennæ attacks autumn Average Yield Tables bark basal area Beech beetles Birch branches Britain broad-leaved trees calculated cambium caterpillars cent Cockchafer compartments conidia conifer crops conifers coppice copse cubic contents damage destructive diameter disease Douglas Fir eggs estimated favourable feed felled felling-series foliage forestry forests frost fungi fungus girth ground growing grubs height hibernate highwoods inch long injurious insects kind of tree land Larch large numbers larva larvæ Life-history mature measured method moths mycelium natural regeneration needles normal growing-stock nurseries percentage plants poles Poplar produced protection pupa pupate rate of growth roots rotation saprophytic sapwood scheme of management Scots Pine seedlings shoots Silver Fir soil and situation species spores sporophores spring Spruce stem sylvicultural thinnings timber timber-crops twigs usually weeds whole wind windfall wing-cases winter woodlands working-circle working-plan young plantations
Populære avsnitt
Side 392 - means any land used as arable meadow or pasture ground only, land used for a plantation or a wood or for...
Side 392 - If the land is used only for a plantation or a wood, the value shall be estimated as if the land, instead of being a plantation or a wood, were let and occupied in its natural and unimproved state.
Side 392 - ... such lands and heritages might in their natural state be reasonably expected to let from year to year as pasture or grazing lands...