This resource update provides an overview of forest resources in North Dakota based on an inventory conducted by the USDA Forest Service, Forest Inventory and Analysis (FIA) program within the Northern Research Station in cooperation with the North Dakota Forest Service. Estimates are based on field data collected using the FIA annualized sample design and are updated yearly. Information about the national and regional FIA program is available at http://fia.fs.fed.us. For the 2017 inventory, estimates for variables such as area, volume, and biomass are based on 7,598 samples (204 forested) collected from 2012-2017. Change variables such as net growth, removals, and mortality are based on 7,588 samples (196 forested) collected in 2007-2012 and 2012-2017. Estimates from earlier annual and periodic inventories are shown for comparison. See Bechtold and Patterson (2005) and O'Connell et al. (2016) for definitions and technical details. A complete set of inventory tables is available at
The fate of forests lies primarily in the hands of those who own and control the land. There are significant opportunities to help family forest owners increase their engagement and stewardship. Projects such as Tools for Engaging Landowners Effectively (http://www.engaginglandowners.org) can help the conservation community develop and implement assistance programs more effectively and efficiently.
This resource update provides an overview of forest resources in Michigan based on inventories conducted by the U.S. Forest Service, Forest Inventory and Analysis (FIA) program of the Northern Research Station. Estimates are based on field data collected using the FIA annualized sample design and are updated yearly. The annual inventory started in 1999. For the 2016 inventory, estimates for current variables such as area, volume, and biomass are based on 6,662 plot samples collected from 2011 to 2016. Change variables, such as net growth, removals, and mortality, are based on 6,076 samples collected in 2006 to 2011 and 2011 to 2016. Estimates from earlier annual and periodic inventories are shown for comparison. See Bechtold and Patterson (2005) and O'Connell et al. (2015) for definitions and technical details. Currently, Michigan is home to over 20 million acres of forest land (Table 1). Since the 1980 inventory, the estimate of forest land has increased by nearly 2 million acres (Fig. 1). Accompanying this increase, the total number of trees, volume, and biomass also have risen. Average annual net growth, mortality, and removals have higher sampling errors, which creates uncertainty in associated trends. Despite this uncertainty, the latest inventory shows a notable increase in average annual mortality on forest land at 23.4 percent (Table 1). The statewide mortality increase is primarily driven by a 230percent increase in ash (Fraxinus americana, pennsylvanica, and nigra) mortality.
This publication provides an overview of forest resources in South Dakota based on an inventory conducted by the USDA Forest Service, Forest Inventory and Analysis (FIA) program at the Northern Research Station (NRS) in cooperation with the South Dakota Department of Agriculture, Resource Conservation and Forestry Division. Estimates are based on field data collected using the FIA annualized sample design and are updated yearly. Information about the national and regional FIA program is available at http://fia.fs.fed.us. For the 2018 inventory, estimates for current variables such as area, volume, and biomass are based on 8,496 samples (577 forested) collected from 2012-2018. Change variables, such as net growth, removals, and mortality are based on 8,261 samples (392 forested) collected in 2009-2013 and resampled in 2012-2018. RESOURCE UPDATE FS-XXX Estimates from earlier annual and periodic inventories are shown for comparison. See Bechtold and Patterson (2005), O'Connell et al. (2014), and Gormanson et al.
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