Event Title

Throughfall spatiotemporal variability within two conifer stands of the Mayson Lake Hydrological Processes Study Area

Description

Rainfall and throughfall were measured during the growing-season of 2007 in a mature and a juvenile coniferous stand of the Thompson Plateau in south-central British Columbia. For the 18 rainfall events sampled (cumulative depth of 111.4 mm) no significant difference (ƒ¿ = 0.05) in cumulative throughfall was found between the mature and juvenile stand with inputs of 77.5 } 11.1 mm (69.6 } 9.9 % of rainfall) and 82.7 } 8.1 mm (74.2 } 7.3 % of rainfall), respectively. Linear regression equations relating throughfall depth to rainfall depth for events that saturate the canopy and those that do not were derived for both stands. The 32 stationary throughfall gauges used in this study represented a sufficiently large enough sample to estimate mean stand-scale throughfall to within } 20% at the 95 % confidence level for rainfalls . 8.7 and . 3.1 mm in the mature and juvenile stand, respectively. Cumulative point throughfall was found to be a function of canopy cover in the mature stand, while in the juvenile stand point throughfall was found to be correlated with both canopy cover and the cumulative basal area of trees contained within a 4 m radius of the gauge.

Document Type

Event

Start Date

8-3-2008 8:00 AM

Subject - LCSH

Forest hydrology--British Columbia--Thompson Plateau; Throughfall--British Columbia--Thompson Plateau

End Date

8-3-2008 5:00 PM

Session

Forest Science I

Genre/Form

Abstracts

Type

event

Geographic Coverage

Thompson Plateau (B.C.); British Columbia

Rights

Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this document for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.

Language

English

Format

application/pdf

Keywords

forest hydrology, throughfall, spatiotemporal variability

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Mar 8th, 8:00 AM Mar 8th, 5:00 PM

Throughfall spatiotemporal variability within two conifer stands of the Mayson Lake Hydrological Processes Study Area

Rainfall and throughfall were measured during the growing-season of 2007 in a mature and a juvenile coniferous stand of the Thompson Plateau in south-central British Columbia. For the 18 rainfall events sampled (cumulative depth of 111.4 mm) no significant difference (ƒ¿ = 0.05) in cumulative throughfall was found between the mature and juvenile stand with inputs of 77.5 } 11.1 mm (69.6 } 9.9 % of rainfall) and 82.7 } 8.1 mm (74.2 } 7.3 % of rainfall), respectively. Linear regression equations relating throughfall depth to rainfall depth for events that saturate the canopy and those that do not were derived for both stands. The 32 stationary throughfall gauges used in this study represented a sufficiently large enough sample to estimate mean stand-scale throughfall to within } 20% at the 95 % confidence level for rainfalls . 8.7 and . 3.1 mm in the mature and juvenile stand, respectively. Cumulative point throughfall was found to be a function of canopy cover in the mature stand, while in the juvenile stand point throughfall was found to be correlated with both canopy cover and the cumulative basal area of trees contained within a 4 m radius of the gauge.