Quantification of the effect of forest harvesting versus climate on streamflow cycles and trends in an evergreen broadleaf catchment.

Kabeya, Naoki and Chappell, Nick A and Tych, Wlodek and Shimizu, Akira and Asano, Shiho and Hagino, Hiroaki (2016) Quantification of the effect of forest harvesting versus climate on streamflow cycles and trends in an evergreen broadleaf catchment. Hydrological Sciences Journal, 61 (9). pp. 1716-1727. ISSN 0262-6667

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Abstract

A new method known as Unobserved Component – Dynamic Harmonic Regression (UCDHR) was applied to a 39-year record of rainfall and streamflow for three sub-catchments of the Sarukawa Experimental Watershed in southwestern Japan. Some 25% of the timber was harvested from one of the sub-catchments in May-July 1982 and the objective was to quantify the magnitude of this effect relative to the effects of climate cycles (e.g. Southern Oscillation Index). The observed effects of inter-annual climate cycles (i.e., 0.89-1.36 mm/d) were seen to be comparable (i.e., 0.70-1.17 mm/d) to the effects of harvesting 25% of the standing timber. This result underlines the importance of always quantifying the effect of climate on streamflow response when harvesting impacts are studied.

Item Type:
Journal Article
Journal or Publication Title:
Hydrological Sciences Journal
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2312
Subjects:
ID Code:
73417
Deposited By:
Deposited On:
12 Apr 2015 10:36
Refereed?:
Yes
Published?:
Published
Last Modified:
07 Jan 2020 04:10