SORTIEND
Software for spatiallyexplicit simulation of forest dynamics 

The standard diameterheight relationships"Standard" is one of the names used to describe a set of allometric functions relating height to diameter. There is one for adults and saplings, and one for seedlings. These are called "standard" because they were the original SORTIE functions and until recently were the only choices. Parameters
The standard sapling and adult DBH  height function is: where:
In some articles, B (Slope of Asymptotic Height) is a published parameter. Other articles instead use H_{1} and another parameter, H_{2}, which was called the DBH to height relationship. In this case, B can be calculated from published values as B = H_{2}/H_{1}. The standard seedling diam_{10}  height function is: where:


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