Treesearch

This Resource Bulletin is part of a series of reports presenting findings from a census of Montana’s primary forest products industry. Part III of the series presents information on sales value and employment associated with primary wood products manufacturing, the economic contribution of forest products manufacturing in the State, and an analysis of the broader forest industry and how it has changed over time. All dollar figures included have been adjusted for inflation to constant 2014 dollars, unless otherwise noted.

The University of Montana’s Bureau of Business and Economic Research (BBER), in conjunction with the Interior West Forest Inventory and Analysis (IW-FIA) Program of the US Forest Service, conducted a census of Montana’s timber processors that operated during calendar year 2014. Through a written questionnaire, phone or inperson interview, timber-processing and residue-utilizing facilities provided information about their 2014 operations, including: plant location, production, capacity, and employment; volume of raw material received, by county and ownership; species of timber received and...

Reforestation and restoration efforts have traditionally relied on “local” seed sources as planting stock. The term “local” has different meanings in different locales, since no single set of seedcollection zones has yet been widely adopted across the eastern United States. Given concerns about mitigating the effects of climate change, forest managers are increasingly seeking to move seed sources in a process called assisted migration, which would be facilitated if a common set of seed-collection zones were available. We developed a map of 245 seed-collection zones for 37 states by...

Broadband high-speed absorption spectroscopy using swept-wavelength external cavity quantum cascade lasers (ECQCLs) is applied to measure multiple pyrolysis and combustion gases in biomass burning experiments. Two broadly-tunable swept-ECQCL systems were used, with the first tuned over a range of 2089-2262 cm−1(4.42–4.79 µm) to measure spectra of CO2, H2O, and CO. The second was tuned over a range of 920-1150 cm−1(8.70–10.9 µm) to measure spectra of ammonia (NH3), ethene (C2H4), and methanol (MeOH). Absorption spectra were measured continuously at a 100 Hz rate throughout the burn process,...

This Resource Bulletin is part of a series of reports presenting findings from a census of Montana’s primary forest products industry. Part I of this series presents information on the volume of timber harvested in the State in 2014 by product, ownership, species and resource area. It also describes timber flow within the State and across State lines.

High-latitude forests of North America are characterized by their natural dependence on large and severe wildfires. However, these wildfires also pose a range of social, economic, and environmental risks, with growing concern regarding persistent effects on stream flow volume, seasonal timing of flow, water quality, aquatic ecosystem health, and downstream community drinking water treatment. Here, we present the outcomes of a comprehensive scoping review of post-fire hydrologic studies in high-latitude forests of North America (Canada and Alaska). Our objectives were to (1) create an...

The 2016 National Land Cover Database (NLCD) product suite (available on www.mrlc.gov), includes Landsatbased, 30 m resolution products over the conterminous (CONUS) United States (U.S.) for land cover, urban imperviousness, and tree, shrub, herbaceous and bare ground fractional percentages. The release of NLCD 2016 provides important new information on land change patterns across CONUS from 2001 to 2016. For land cover, seven epochs were concurrently generated for years 2001, 2004, 2006, 2008, 2011, 2013, and 2016. Products reveal that land cover change is significant across most land...

Recent studies have recognized the importance of nocturnal sap flow (Qn) in affecting forest carbon and water budgets and responses to climate change at stand, regional, and global scales. However, biophysical controls on Qn are not fully understood, and their implications for land surface and vegetation models are unclear. We measured growing season sap flow of two widely distributed afforestation species, Pinus tabuliformis and Acer truncatum, in a middle-aged and a young monoculture forest stand, respectively, in a semi-arid mountainous area of northern China. We found a convergence in...

The objective of this study was to examine the impacts of urbanization on gross primary productivity (GPP) and the interactions between carbon and water fluxes, including precipitation, evapotranspiration (ET), and water yield (Q). A water-centric ecosystem model, Water Supply Stress Index model (WaSSI) that operates at the 12- digit (81,900 watersheds) Hydrologic Unit Code (HUC) scale for the conterminous United States (CONUS) during 2000–2010, 2000–2050, and 2000–2100 was used. Linear regression and causal-based models were then applied to identify key factors controlling urbanization...

Understanding the effects of land use change on evapotranspiration (ET) and its partitioning to transpiration and evaporation is important for accurately evaluating the likely environmental impacts on watershed water supply, climate moderation, and other ecosystem services (e.g., carbon sequestration and biodiversity). This study used a distributed hydrologic model, MIKE SHE, to partition evapotranspiration into soil evaporation, transpiration, ponded water evaporation, and interception, and examined how the ET partitions affected the water balance in the Qinhuai River Basin from 2000 to...