The Validation of the Mixedwood Growth Model (MGM) for Use in Forest Management Decision Making
作者： Mike Bokalo , Kenneth Stadt , Philip Comeau , Stephen Titus
DOI: 10.3390/F4010001
关键词: Environmental science 、 Stand development 、 Ecology 、 Diameter at breast height 、 Forest management 、 Basal area 、 Forestry 、 Taiga 、 Deciduous 、 Black spruce 、 Growth model
摘要: We evaluated the Mixedwood Growth Model (MGM) at a whole model scale for pure and mixed species stands of aspen white spruce in western boreal forest. MGM is an individual tree-based, distance-independent growth model, designed to evaluate yield implications relating management spruce, black aspen, lodgepole pine, mixedwood Alberta, British Columbia, Saskatchewan, Manitoba. Our validation compared stand-level predictions against re-measured data (volume, basal area, diameter breast height (DBH), average top density) from permanent sample plots using combined analysis residual plots, bias statistics, efficiency innovative application equivalence test. For state variables, effectively simulated juvenile mature stages stand development both Alberta. overestimates increment older likely due age-related pathology weather-related damage. identified underestimates deciduous density volume Saskatchewan. performs well postharvest less than 30 years age. These results illustrate comprehensive metrics complex provide support use planning.
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