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Site Conditions are polygons classifying Stands, portions of Stands, or larger areas as available or unavailable for management. Management concerns that can possibly be mitigated are considered ‘available’ while concerns that most likely cannot be mitigated are ‘unavailable’ for management. Considerations include administrative rules and laws, accessibility, special management or use designations, timber markets and industry considerations, and ecological or biodiversity values. Site Conditions should be mapped on areas that are:
Unavailable for management
Not managerially desirable to treat because of one of more harvest constraints
Managerially desirable to treat but are limited by one or more site conditions.
Each polygon must have one dominant Site Condition but may have more than one other Site Condition. Site Conditions are a dynamic dataset reviewed as part of the 10-year inventory cycle but may also be edited at any time. Site conditions are more fully described in the MiFI Manual Chapter 4 – Site Conditions and Appendix O – Site Conditions List.
Treatment history is captured at the following statuses: 3 – Proposal, 5 – Approved Proposal, 9 – Field Boundary. The following statuses are only shown in Treatment history: 11- Completed, 12 – Rejected Proposal, 14 – Terminated, 15 – Treatment Sequence Complete, and 16 – Treatment Sequence Terminated.
Treatments are managerially desirable activities that further management objectives. Treatments include any activity that affects the vegetative composition and attributes recorded in Stands layer such as timber harvest, prescribed burning or tree planting. Treatments may be part of a sequence, or multiple activities that occur over time. There is only one active treatment at a time with older treatments recorded in Treatment Lineage and future treatments described in Next Step Treatments. Approval status is used to identify phases of the inventory, approval and implementation process. Treatments usually originate from a Stand but may be larger or smaller for various business reasons. Treatment-level attributes may include, but are not limited to:
Treatment type
Treatment method
Cover type objective, Age structure, and Acceptable regeneration
Prescription specifications and other comments
A stand is a polygon representing a relatively homogenous area of similar cover type. Stands are classified as ‘forested’ (having a canopy of tree species greater than 3 feet tall covering at least 25% of the stand area) or ‘nonforested’ (all stands not meeting the definition of forested). In forested stands, the age class of trees, species composition, basal area stocking, and age structure will be consistent. Nonforested stands are areas of similar species composition. Stands follow mapping standards per MiFI Manual Chapter 3 – Stands. Stand-level attributes may include, but are not limited to:
Canopy and subcanopy composition
Age, age structure, and age source
Basal area
Overall size (Log, Pole, Sapling)
Upland vs. lowland designation
Stand origin (planted vs. natural)
Canopy data is used to classify stands into 3- or 4-digit cover type codes (see MiFI Manual Appendix A – IFMAP Classification). Data is primarily collected through field inventory and updated every 10 years following the compartment’s Year of Entry inventory cycle.
Compartments are used to assist staff in making management and planning decisions. State forest lands are arranged into blocks called Compartments. A compartment may be a contiguous area of state-owned lands or a compilation of nearby non-contiguous areas within in a Forest Management Unit (FMU), State Park, State Game Area or other designation. Compartments provide a convenient location reference, a metric for distributing management activities over time, and a discrete unit for planning purposes. Compartments range in size from less than 100 acres to over 5,000 acres with a typical size of about 1,500 to 3,000 acres. Smaller compartments are necessary in areas of fragmented ownership or used when management objectives are more readily met. Larger compartments may be used to improve operational efficiencies, when management objectives require large areas for specific goals, or to include an entire unit in the same compartment (e.g., a large State Park or State Game Areas). Compartment boundaries are usually static except in the case of minor adjustment of stand lines sharing a compartment boundary or if a case is made to change boundaries to align with management goals. For forest management activities specifically, compartments were developed to:
Summarize data and make treatment recommendations on an area small enough to allow quick visualization of existing conditions and the effects of treatments.
Systematically examine and consider treatments in a localized forest acreage.
Disperse treatments spatially across the FMU.
Disperse treatments temporally across the FMU as each compartment is also assigned one of ten Years of Entry.
Attempt to ensure even distribution of treatment acres across years.