Table of Contents | ||
---|---|---|
|
Overview
Sometimes stand boundaries need to be changed after a cruise has been competed. Possible reasons for this include:
...
In these scenarios, it is necessary to edit the Stand boundaries AND update the cruise plots to ensure that they are associated with the new Stand boundaries. In some cases plots may end up outside of the Stand (e.g., in a non-forested donut hole that is created). in other cases plots will now be in newly created Stands that are produced by splitting the original Stand into 2 or more Stands.
Steps
There are 3 main steps to post-cruise stratification
Review available information
Update Stand boundaries
Validate plots
Review available information
There are several ways that foresters record information in the field to support post-cruise stratification. The most common are:
Collecting line features in MobileMap via GPS tracking or heads-up digitizing
Recording notes on which plots fall into the proposed new Stands
The image below
Update Stand Boundaries
While Stand boundaries can be updated in MobileMap for most users, we strongly recommend that InventoryManager be used to update Stand Boundaries. This is because it is typically easier to use InventoryManager’s tools, the larger and brighter screen, and additional flexibility in base maps when editing Stand boundaries.
Once all data have been uploaded from MobileMap, Stand boundaries can be edited using standard feature editing tools InventoryManager: Feature Editing in InventoryManager. The main tools used are splitting with a line, or cutting a donut hole.
Splitting Stands
In the example below, a cruised Stand was found in the field to have two distinct management histories and thus there is a need to split the stand. The user wishes to split the Stand along the road the separates the Northwest portion of the Stand from the rest of the Stand. To complete this process, they first (1) enable draw edits on the Stands layer by clicking the pencil icon on the map legend. (2) Next, they select the line tool on the map editing tools that appear on the upper left portion of the map. (3) Next, they begin digitizing a split line by starting just outside of the stand, and (4) click to add vertices at every bend in the road. They add the final vertex just outside of the opposite Stand boundary, (5) then double click to complete the line.
...
Once the split line has been completed, it will be displayed as a blue line on the map (6). Apply the split line by clicking ‘Submit’ (7).
...
When the Submit button is pressed, InventoryManager will split the Stand into two Stands, then highlight the newly created Stand (8). This new Stand will have a unique ObjectID, and the correct Acres. All other attributes will be identical to the original Stand, including the Stand_ID. To address this issue edit the attributes for the new Stand and update the Stand_ID. To do this, first click on the Edit Attributes (paper and pencil icon) button (9). Next, enter a new Stand_ID value (10). Optionally, update additional attribute values. Finally, click the Save (disk icon) button to save the updates (11).
...
At this point, you have completed the second step in the process ‘Update Stand boundaries’.
Validate Plots
The final step of the process is to re-assign plots from the original Stand to this newly created Stand. This process is known as Validation. To validate the plots, click the ‘Validate’ tab in the upper left corner of InventoryManager, then click ‘Validate Plots’