"The effect of aspen harvest and regrowth on water yield in Minnesota" by Elon S. Verry
 

Aspen Bibliography

The effect of aspen harvest and regrowth on water yield in Minnesota

Authors

Elon S. Verry

Document Type

Contribution to Book

Source

Forest Hydrology and Watershed Management: Proceedings of the Vancouver Symposium

Journal/Book Title/Conference

International Association of Hydrological Sciences

Volume

Publication No. 167

First Page

553

Last Page

562

Publication Date

1987

Abstract

Annual water yield increased following the clearcutting of a mature aspen forest in years 1-9 and year 14 of subsequent aspen regrowth. Maximum increases of 85, 117, and 88 mm year-l occurred during the first 3 years of regrowth. Increases in streamflow volumes from snowmelt and early spring rains were minimal and more variable after harvest and regeneration. Most of the increases occurred during the leaf-on periods, but sporadic increases occurred during the fall-early winter recharge period as long as 15 years after harvest. Increases in water yield were best explained by changes in aboveground biomass, but precipitation, especially during the leaf-on periods, improved the relation. Increases in annual water yields became insignificant when aboveground biomass approached 57 tonnes ha-1 (17 percent of mature forest biomass at 14-15 years of age).

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