Main Title |
Comparative Water Loss of Douglas-Fir and Oregon White Oak. |
Author |
Krygie, James T. ;
|
CORP Author |
Oregon State Univ., Corvallis. Water Resources Research Inst. |
Year Published |
1971 |
Report Number |
OWRR-A-001-OREG; 11063,; A-001-OREG(9) |
Stock Number |
PB-202 010 |
Additional Subjects |
( Fir trees ;
Water loss) ;
( Oak trees ;
Water loss) ;
( Soil water ;
Depletion) ;
Evapotranspiration ;
Water consumption ;
Rainfall ;
Drainage ;
Surface water runoff ;
Water balance ;
Evaporation ;
Transpiration ;
Pseudotsuga menziesii ;
Quercus garryana
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-202 010 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
157p |
Abstract |
A water budget was determined for pure, fully stocked stands of Douglas-fir and Oregon white oak. Plots were irrigated one summer to measure water loss when water was freely available--an attempt to simulate potential conditions. A plastic roof was constructed under the canopy of each of the stands and a plastic barrier installed in the soil to permit early spring and winter measurements for one year. Measurements consisted of gross precipitation in openings, throughfall, and soil-water change. Interception storage was determined to be .02 inches for oak in a leafless condition, .10 inches when in leaf, .13 inches for Douglas-fir in winter, and .20 inches in summer. The disposition of average annual precipitation (1965 and 1966) to interception loss is 21 percent for Douglas-fir and 7.5 percent for Oregon white oak, eight and three inches, respectively. Computed hydraulic gradients indicate downward water movement in the oak soil profile for a longer period in the spring months. (WRSIC abstract) |
NTIS Title Notes |
Project completion rept.. |
PUB Date Free Form |
Apr 71, |
Category Codes |
2F; 8H; 52H; 64H |
NTIS Prices |
PC A08 MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326520082 |
Origin |
NTIS |
Type |
CAT |