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| A generalised hybrid process-empirical model for predicting plantation forest growth [An article from: Forest Ecology and Management] | ![A generalised hybrid process-empirical model for predicting plantation forest growth [An article from: Forest Ecology and Management]](http://ecx.images-amazon.com/images/I/51J0NT7CW9L._SL160_.jpg)
 enlarge | Authors: R.m. Waterworth, G.p. Richards, C.l. Brack, Evans
Publisher: Elsevier
Category: Book
Buy New: $10.95
Format: Html
Media: Digital
ASIN: B000PDSHNY
Publication Date: January 30, 2007
Availability: Available for download now
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Product Description
This digital document is a journal article from Forest Ecology and Management, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
A generic model of plantation growth was developed for Australia's National Carbon Accounting System to allow spatial estimation of carbon stocks over time. Unlike the primary goal of most forest growth models, which is to predict log volume at harvest age, the international guidelines for carbon accounting require estimation of current annual increments of total (above and belowground) biomass. In contrast to most commercial forestry systems that are concerned with rotations of many years, capturing the effects of annual climate variability is important, a feature that would otherwise be largely ameliorated over a forest rotation. While yield tables can provide the basis from which empirically based models can predict an 'averaged' performance over time, a process-based model can capture the effects of variability over short time periods. To utilise the valuable empirical data contained in yield tables, while also capturing the effects of process drivers, a hybrid model has been developed that integrates:*a spatially and temporally explicit site class index based on a process model, *a simple growth equation modified by the spatial and temporal site index, *known empirical constraints on growth (as an average) sourced from yield tables, *management effects. Management effects may either increase overall site productivity, and hence biomass accumulation, or accelerate the rate of approach toward site carrying capacity. The effects of management are important and need to be captured in the model. Some 5000 forest management regimes, representing different species, regions, site qualities and variants in management in Australia have been described for application within the model. A national program of identifying both forest areas and forest age classes, using a 30-year archive of Landsat satellite data has been undertaken to provide inputs to the model.
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