Pamphlets on Forest Economics, Volume 61920 - Economics |
From inside the book
Results 1-5 of 36
Page 109
... melting . Snowslides .. Soil moisture_ . Evaporation__ Sources of evaporation losses_ Stream flow before and after denudation ... 7 Broader relations between the two periods of the experi- Initial work and dam construction .. 10 ment_ ...
... melting . Snowslides .. Soil moisture_ . Evaporation__ Sources of evaporation losses_ Stream flow before and after denudation ... 7 Broader relations between the two periods of the experi- Initial work and dam construction .. 10 ment_ ...
Page 110
... melting ... FIG . 11. Aspen on lower portion of east slope of watershed B. FIG . 32 . Relative discharges last 10 days of flood . FIG . 33 . FIG . 12. Part of east - slope area of watershed B , supporting a good stand of Douglas fir__ ...
... melting ... FIG . 11. Aspen on lower portion of east slope of watershed B. FIG . 32 . Relative discharges last 10 days of flood . FIG . 33 . FIG . 12. Part of east - slope area of watershed B , supporting a good stand of Douglas fir__ ...
Page 111
... melting in the western mountains of the United States is another service that forests are believed to perform in the regulation of streamflow and the protection of watersheds , and one which no other form of vegetation could accomplish ...
... melting in the western mountains of the United States is another service that forests are believed to perform in the regulation of streamflow and the protection of watersheds , and one which no other form of vegetation could accomplish ...
Page 2
... melting ) , watershed A might be compared to a narrow trough and watershed B to a fan - shaped collector . The relatively short slopes of A enable it to deliver the first bulk of a water supply in a relatively short time , and this ...
... melting ) , watershed A might be compared to a narrow trough and watershed B to a fan - shaped collector . The relatively short slopes of A enable it to deliver the first bulk of a water supply in a relatively short time , and this ...
Page 3
... melting , is the fact that the main axis of watershed A is almost directly east - west , while that of B is more nearly north- east - southwest . In consequence , the north half or south- erly exposure of A contains considerable areas ...
... melting , is the fact that the main axis of watershed A is almost directly east - west , while that of B is more nearly north- east - southwest . In consequence , the north half or south- erly exposure of A contains considerable areas ...
Common terms and phrases
Agriculture amount annual aspen basin billion board feet billion feet cent Coast Redwood cost crest crop cubic feet denudation depletion discharge Douglas fir effect estimated evaporation excess farm February figures flood forest counties forest land Forest Service forest taxation forestry Fred Rogers Fairchild Giant Sequoias grades Group hardwood inches increase July June Lake less logging Louis County lumber cut lumber industry lumber prices manufacture March markets material mean melting million acres mills Minnesota months National Forests National Parks newsprint north slope October operating owners postdenudation period precipitation Predenudation period present production quantities rain Red River Valley Redwood saw timber second growth second period Singletax snow softwood South southern pine species stream flow stumpage summer supply Table timberland tion trees United Valley Counties virgin timber Wagon Wheel Gap watershed weir western white pine white pine Winona County winter yellow pine