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Quantitative characterization of field-estimated soil nutrient regimes in the subalpine coastal forest.

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Title: Quantitative characterization of field-estimated soil nutrient regimes in the subalpine coastal forest.
Author: Klinka, Karel; Splechtna, Bernhard E.; Chourmouzis, Christine
Subject Keywords Classification;Elevation;Forest site quality;Mountain hemlock;Pacific silver fir;Site index;Soil moisture;Soil nutrient regime;Soil nutrients
Issue Date: 1999
Publicly Available in cIRcle 2008-04-22
Publisher Forest Sciences Department, University of British Columbia
Series/Report no. Scientia Silvica extension series, 1209-952X, no. 21
Abstract: Site classification in the biogeoclimatic ecosystem classification system is based on three differentiating properties: climatic regimes (expressed by biogeoclimatic subzones or variants), soil moisture regimes (SMRs), and soil nutrient regimes (SNRs). A SNR represents a segment of a regional soil nutrient gradient, i.e., soils which provide similar levels of plant-available nutrients over a long period. SNRs are identified in the field using a number of easily observable soil morphological properties and indicator plant species. However, we need to know to what extent soil nutrient properties support these indirect field-estimates. There have been several studies that quantitatively characterize regional soil nutrient gradients in different climatic regions, but no study has yet been done in the subalpine coastal forest (Mountain Hemlock zone). Influenced by a maritime subalpine boreal climate, high-elevation coastal soils differ from low-elevation soils by having a thicker forest floor and a higher organic matter content. In the study summarized here, relationships between soil chemical properties and field-estimated SNRs are examined and soil chemical properties and field-identified SNRs are related to the site index of Pacific silver fir (Abies amabilis (Dougl. ex Loud.) Forbes) - one of the major timber crop species in the Coastal Western Hemlock and Mountain Hemlock zones.
Affiliation: Forestry, Faculty ofForest Sciences, Department of
URI: http://hdl.handle.net/2429/759
Peer Review Status: Reviewed

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