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Title: A volume change index for forest growth and sustainability
Author(s): Van Deusen, Paul ; Roesch, Francis
Date: 2009
Source: Forestry. 82(3): 315-322.
Station ID: JRNL--82
Description: A volume change index is suggested that is derived from growth components that can be estimated from remeasured plots. The new index incorporates more information than the traditional growth over removals, ratio. The new index directly indicates whether the standing volume will be increasing or decreasing if current conditions persist, whereas the ratio of growth over removals obscures the impact of mortality. The details of estimating the components of growth are discussed with regard to interpreting the new index. The effect of spatial scale on the index is explored and a variance estimator is suggested. The new index is estimated from U.S. Department of Agriculture, Forest Service annual inventory data for two example applications. The first application looks at spatial trends in the index. The second application applies the index to a mill working circle.
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