This report presents a summary of the most recent inventory information for Montana's forest lands. The report includes descriptive highlights and tables of area, number of trees, biomass, volume, growth, mortality, and removals. Most of the tables are organized by forest type group, species group, diameter class, or owner group. The report also describes inventory design, inventory terminology, and data reliability. Results show that Montana's forest land totals 25.6 million acres. Sixty percent (15.4 million acres) of this forest land is administered by the USDA Forest Service. Douglas-fir forests cover 7.5 million acres or roughly 29 percent of Montana's forested lands, making it the most abundant forest type in the State. The lodgepole pine type is the second-most common individual forest type comprising 17 percent of Montana's forest land. Lodgepole pine is the most abundant tree species in Montana by number of trees, and Douglas-fir is the most abundant species by volume or biomass. Net annual growth of all live trees 5.0 inches diameter and greater on Montana forest land totaled 289.8 million cubic feet. Average annual mortality totaled nearly 746.3 million cubic feet.
In 2012, the US Forest Service promulgated new regulations for land-management planning that emphasize the importance of scientifically credible assessment and monitoring strategies for adaptive forest planning and the maintenance or restoration of ecological integrity. However, in an era of declining budgets, the implementation of robust assessment and monitoring strategies represents a significant challenge for fulfilling the intent of the new planning rule. In this article, we explore opportunities for using data and products produced by the USDA Forest Service’s Forest Inventory and Analysis (FIA) Program to support the implementation of the 2012 Planning Rule. FIA maintains a nationally consistent statistical sample of field plots that covers most national forests with hundreds of plots. We suggest that leveraging FIA data and products can generate efficiencies for assessment, planning, and monitoring requirements detailed in the 2012 Planning Rule, and help fulfill the adaptive intent of the new planning rule. However, strong national leadership and investment in regional-level analytical capacity, FIA liaisons, and decision-support tools are essential for systematically realizing the benefits of FIA data for forest planning across the National Forest System.
This report presents a summary of the most recent inventory information for Idaho's forest lands. The report includes descriptive highlights and tables of area, number of trees, biomass, volume, growth, mortality, and removals. Most of the tables are organized by forest type, species, diameter class, or owner group. The report also describes inventory design, inventory terminology, and data reliability. Results show that Idaho's forest land totals 21.4 million acres. Nearly 76 percent (16.2 million acres) of this forest land is administered by the USDA Forest Service. Douglas-fir forests cover almost 6.3 million acres or roughly 29 percent of Idaho's forested lands, making it the most abundant forest type in the State. The lodgepole pine type is the second-most common type comprising 11.5 percent of Idaho's forest land. In terms of number of individual trees, subalpine fir is the single most abundant tree species in Idaho. Net annual growth of all live trees 5.0 inches diameter and greater on Idaho forest land totaled 376.2 million cubic feet. Average annual mortality totaled nearly 814.6 million cubic feet.
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