Treesearch

Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and nonindustrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found here: https://research.fs.usda.gov/programs/nrum .

Timber Product Output (TPO) is a component of FIA’s National Resource Use Monitoring (NRUM) program aimed at gathering and reporting information on industrial and nonindustrial uses of roundwood. Data are gathered through annual surveys of primary wood processing facilities and aggregated and reported at the county and/or state level. Data and more information about NRUM and TPO can be found here: https://research.fs.usda.gov/programs/nrum .

Conservation easements have become a prevalent method for conserving forestland in the United States in the face of housing and other development. In this study, we used data from the National Woodland Owner Survey conducted by the USDA Forest Service in 2017–2018 to examine patterns and determinants of conservation easement adoption on individual forestland parcels. A total of 9349 landowners are included in the analysis, covering all 50 states. We used a spatial binary probit model to consider potential spatial dependence in conservation decisions among adjacent landowners. Our results...

Forests in cities are important social and ecological resources that vary in spatial extent, configuration, and ownership across urban areas, yet these patterns are not well described. Using high resolution urban tree canopy maps and planimetric data from three major cities of the eastern United States (New York, NY; Philadelphia, PA; Baltimore, MD), we distinguish patches of forest from other tree canopy types. We then compare forest patch spatial characteristics and ownership across the three cities. Baltimore has the greatest citywide forest patch cover (8.3 %) and forest patch area per...

Emerald ash borer (Agrilus planipennis Fairmare) is a destructive invasive insect pest of ash trees (Fraxinus spp.) in North America. Monitoring ash regeneration within post-invasion forests is essential to assess ash persistence in North America. We recorded density of overstory ash [> 10 cm diameter at breast height (DBH)], ash recruits (2–10 cm DBH), ash saplings (≥ 45 cm in height; < 2 cm DBH), and ash seedlings (< 45 cm in height), along with canopy dieback of overstory ash and recruits in four post-invasion areas in south-central Michigan, USA. We also recorded density of all other...

Douglas-fir is the primary timber species in the Pacific Northwest. Successful reforestation after wildfire or harvest requires planting Douglas-fir seedlings that will thrive in that location. Different populations of the same species have slightly different growth habits. Selecting the right seed source for a site is critical to success. The Pacific Northwest’s unprecedented heat dome in 2021 created June temperatures that were 35 to 45 °F higher than average. Connie Harrington and Rich Cronn, scientists with the U.S. Department of Agriculture, Forest Service, Pacific Northwest Research...

Evidence appears to be building that direct exposure to natural landscapes characterized by significant green cover, such as forests, can help to reduce chronic health conditions such as obesity, stress, hypertension, chronic cardiovascular conditions, depression, anxiety, cancer, and diabetes. One way to encourage greater exposure to nature may be through the use of nature prescriptions, whereby clinicians formally recommend (or prescribe) time in nature to their patients. Based on self-reported data, we describe the implementation and lessons learned from a pilot field experiment...

Lianas, woody vines acting as structural parasites of trees, have profound effects on the composition and structure of tropical forests, impacting tree growth, mortality, and forest succession. Remote sensing could offer a powerful tool for quantifying the scale of liana infestation, provided the availability of robust detection methods. We analyze the consistency and global geographic specificity of spectral signals—reflectance across wavelengths—from liana-infested tree crowns and forest stands, examining the underlying mechanisms of these signals. We compiled a uniquely comprehensive...

Climate change is creating an urgent need to implement adaptation strategies in forest ecosystems. Assisted migration (AM) of species or genotypes adapted to future climate is one promising strategy, but operational implementation is challenging and likely varies across ownerships. We conducted an online survey (n = 174) of federal, state, Tribal and private industrial forest managers in Washington, Oregon, and California to understand individual and organizational practices around climate adaptation, perceived barriers to AM, and differences between private industry and public agencies....

Forest conversion to development threatens the ability of watersheds to provide stable and clean water supplies. Water managers are targeting forest conservation as a source water protection strategy to maintain healthy watershed function in developing areas, especially upstream of drinking water treatment facilities. Understanding the role of current forest cover in safeguarding these facilities is therefore crucial. We used the Soil and Water Assessment Tool (SWAT) to examine the relationship between upstream forest cover and downstream water resources under both current (2020) conditions...