Tree data member list
This is a list of the possible data that a tree can have. You can save this data in a detailed output file by using the Setup tree save options window.
Data that is always present
Some data are fundamental to a tree and are always available for saving. They are:
- X. The coordinate of the tree, in meters, on the X axis in the SORTIE plot.
- Y. The coordinate of the tree, in meters, on the Y axis in the SORTIE plot.
- DBH. The diameter at breast height of a tree, in cm. This does not apply to seedlings.
- Diameter at 10 cm (diam10). The tree's diameter at 10 cm height, in cm. This applies only to seedlings and saplings.
- Height. The tree's height in meters.
- Crown Radius. The tree's crown radius in meters. Note that this value is updated only on an as-needed basis. This means that the value may show up as -1, meaning that the tree's crown radius was not requested this time step. Also, this value will almost certainly reflect the tree's size at the beginning of the timestep, when crown dimension calculations are made, rather than the end of the timestep, as with the other tree dimensions. This does not apply to seedlings.
- Crown Depth. The tree's crown depth in meters. The same warning applies as with crown radius. This does not apply to seedlings.
- Age. The time since death, in years. Only for snags.
Behavior-specific data
Certain sets of behaviors require additional information about a tree. One of the ways in which behaviors communicate with one another is by defining new pieces of data for trees and then setting and reading values for those data. A piece of data created by a behavior is only attached to those tree species and tree types to which the behavior is applied.
The name in parentheses is the name SORTIE uses.
- Light level (Light). Light level for the tree. This could be GLI, or percent shade (if Sail Light is used). This is created by any of the light behaviors except the Beer's Law light filter.
- Diameter growth (Growth). Amount of diameter growth per year in mm. This is created by any of the growth behaviors that increment diameter growth.
- Light filter respite counter (lf_count). Created by the Beer's law light filter behavior. It contains the years of respite for a new seedling from the effects of the light filter.
- Rooting height (z). The height, in mm, above ground level at which a seedling is rooted. Created by the Beer's law light filter behavior.
- Years released (ylr). The length of the current release period, in years. Created by the absolute growth behaviors.
- Years suppressed (yls). The length of the current suppression period, in years. Created by the absolute growth behaviors.
- Dead flag (dead). An integer flag for whether a tree has died. 0 = not dead. Created by any of the mortality behaviors. This is used by the dead tree remover behavior to find the trees it should remove.
- Storm Damage Value (stm_dmg). An integer value with the damage level of a storm and how long it has been damaged. A value of 0 means no damage; a value starting with 1 means medium damage; a value starting with 2 means complete damage. The digits at the end count how many years since the damaging event. For example, a value of 1005 is a tree that received medium damage 5 years ago. Created by the Storm damage applier behavior.
- Tree Bole Volume (Bole Vol). The volume of a tree, in cubic feet. Created by the Tree bole volume calculator behavior.
- Tree Volume (Volume). Volume of the tree, in cubic meters. Created by the Tree volume calculator behavior.
- Tree Biomass (Biomass). Biomass of the tree, in metric tons (Mg). Created by the Dimension analysis behavior.
- Tree Age (Tree Age). Age of the tree, in years. Created by the Tree age behavior.
- Snag Decay Class (SnagDecayClass). Snag decay class. Created by the Snag Decay Class Dynamics behavior.
- New Break Height (NewBreakHeight). Snag break height, if the break occurred this timestep. -1 if the snag is unbroken. Created by the Snag Decay Class Dynamics behavior.
- Snag Old Break Height (SnagOldBreakHeight). Snag break height, if the break occurred in a previous timestep. -1 if the snag is unbroken.Created by the Snag Decay Class Dynamics behavior.
- Fall (Fall). Whether a tree that has died this timestep has fallen (true), or remains standing as a snag (false). Created by the Snag Decay Class Dynamics behavior.
- Pre-harvest growth (PreHarvGr). Growth prior to the last harvest. Created by the Lagged post harvest growth behaviors.
- Crown Radius (Crown_Radius). A tree's crown radius in meters. Created by the Crown Radius Reporter behavior. Deprecated.
Last updated: 03-Jun-2009 03:04 PM