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| Titel |
Effect of clear cutting on snow accumulation and water outflow at Fraser, Colorado |
| VerfasserIn |
C. A. Troendle, J. O. Reuss |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 1, no. 2 ; Nr. 1, no. 2, S.325-332 |
| Datensatznummer |
250000151
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| Publikation (Nr.) |
 copernicus.org/hess-1-325-1997.pdf |
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| Zusammenfassung |
| This paper compares of snowpack accumulation and ablation,
evapotranspiration, and water outflow from clearcut and forested plots within a high
elevation (2900 m) mixed conifer forest at the Fraser Experimental Forest near Fraser,
Colorado, USA. Also presented is a method for defining contributing area where outflow
is measured from unbounded plots. Plots were monitored from 1980 to 1990 and again in
1993. The clearcut plot was harvested in late 1984. Evapotranspiration (ET)
of the forested plot at zero discharge (ETo) was estimated at 426 mm while
the ET was 500 mm at the mean precipitation of 596 mm. ET was
dependent on precipitation with about 28% of precipitation input in excess of 426 mm
contributing to increased ET, while the remainder contributed to increased
outflow. During the six monitored post-harvest years, Peak Water Equivalent of the
snowpack averaged 36% higher on the cut plot than on the control, and the mean discharge
increased from 85 mm to 356 mm. Area estimates were obtained from the slopes of the
regression of outflow on precipitation inputs. Hydrologic parameters corresponded closely
to those previously determined at Fraser Experimental Forest using other methods, lending
credence to the validity of the area estimates. |
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