Pamphlets on Conservation of Natural Resources, Volumen6U.S. Government Printing Office, 1913 |
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Página 57
... pine region . The Spruce Region is one of natural forest soils , not suited to agriculture . Its topography is rugged . Red spruce is the predominant conifer , growing in nearly pure stands or in mixture with hardwoods and with other ...
... pine region . The Spruce Region is one of natural forest soils , not suited to agriculture . Its topography is rugged . Red spruce is the predominant conifer , growing in nearly pure stands or in mixture with hardwoods and with other ...
Página 58
... pine , red pine , European larch , Norway spruce , white ash and basswood . The White Pine Region of the Northeast has been so named from one of its chief species of trees . White pine is to be found in the spruce region and associated ...
... pine , red pine , European larch , Norway spruce , white ash and basswood . The White Pine Region of the Northeast has been so named from one of its chief species of trees . White pine is to be found in the spruce region and associated ...
Página 59
... pine region of the Northeast are white pine and red pine . Scotch pine may prove useful for the poorest lands . Hardwoods , such as white ash and red oak , deserve use on sites . to which they are suited . Several million acres require ...
... pine region of the Northeast are white pine and red pine . Scotch pine may prove useful for the poorest lands . Hardwoods , such as white ash and red oak , deserve use on sites . to which they are suited . Several million acres require ...
Página 60
... pine type occupies sandy loams and sand soils . The principal species in the pineries are white pine and red ( Norway ) pine . On the poorer soils the red pine and Jack pine are the chief trees . Most extensive areas in need of ...
... pine type occupies sandy loams and sand soils . The principal species in the pineries are white pine and red ( Norway ) pine . On the poorer soils the red pine and Jack pine are the chief trees . Most extensive areas in need of ...
Página 61
... pine type are white , red , Scotch and Jack pine . The last mentioned is useful on the poorest sands , and a stand may be secured by spreading cones on newly burned lands , a method both cheap and effective for this species . Good ...
... pine type are white , red , Scotch and Jack pine . The last mentioned is useful on the poorest sands , and a stand may be secured by spreading cones on newly burned lands , a method both cheap and effective for this species . Good ...
Términos y frases comunes
acres administration agricultural American Forestry Association amount annual average camp cent Chairman commercial companies conifers Conservation Congress consumer cooperation cost course Douglas fir effect eucalyptus favor Federal Government feet field fire protection fire wardens forest fires forest land forest law forest products forest protection forest schools Forest Service forest taxation Forestry Committee future grades growth hardwood important increase interest investment legislation logging lumber lumber industry lumbermen manufacturing meeting methods mill moisture mountains national forests operations Oregon organization patrol patrolmen planting possible practical precipitation present private forestry private owners problem profit property tax railroad ranger school reason reforestation region revenue sections secure silvicultural soil spark arresters species stumpage sub-committee supply timber land timber owners tion town trees utilization waste white pine woods yellow pine yield tax