Abstract
Two important concepts in forest stand density management !a the maximum basal area carrying capacity and the maximusize-density relationship (MSDR) for individual stands !a are mathematically related. For stands with a MSDR slope lesthan 2, maximum basal area carrying capacity will occur after a stand has reached its MSDR stage of stand development, or after Reineke!?s SDI has been maximized. Maximum basal area carrying capacity and the MSDR stage of stand developmen will occur simultaneously in a stand that has a MSDR slope equal to 2. If a MSDR!?s slope is greater than 2, a stand will reac its maximum basal area carrying capacity prior to reaching its MSDR stage of stand development.
Highlights
Maximum basal area carrying capacity and Maximum Size-Density Relationships (MSDRs) are commonly applied concepts in the management of forest stand density
Assuming a b of 1.6 and that the stand is at its MSDR dynamic thinning line stage of stand development, for a given change in tree density the change in QMD is consistent with a b of 1.6
For a MSDR dynamic thinning line b of 1.6, in order to keep lnSDI constant for any change in lnTPH, lnQMD must change consistent with a slope of 1.6
Summary
Maximum basal area carrying capacity and Maximum Size-Density Relationships (MSDRs) are commonly applied concepts in the management of forest stand density. This note elucidates the relationship between individual stand maximum basal area carrying capacity and individual stand MSDRs — what Weller (1990) called a dynamic thinning line. An interesting question is whether a stand that has reached its maximum basal area carrying capacity will simultaneously have reached it’s MSDR dynamic thinning line.
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