United States Department of Agriculture
Describes an equation and tables of coefficients to determine merchantable tree volume, using a digital computer, for four regions of Missouri.
This study examined the effect of clustering timber harvest zones and of changing the land use categories of zones (dynamic zoning) over varying temporal and spatial scales. Focusing on the Hoosier National Forest (HNF) in Indiana, USA as a study area, I used a timber harvest allocation model to simulate four management alternatives. In the static zoning alternative,...
Reviews status of Neotropical migratory landbirds, and effects of land-use practices in the Midwestern United States, from a landscape perspective, through a series of papers authored by regional experts. Includes recommendations for the conservation of Midwestern Neotropical migratory landbirds.
This bulletin reports findings of a survey of all primary wood-using mills in Iowa in 1994.
Describes an inexpensive, efficient system for measuring plant-atmosphere gas exchange. Designed to measure transpiration from potted tree seedlings, it is readily adaptable for measuring other gas exchanges or gas exchange by plant parts. Light level, air and root temperature can be precisely controlled at minimum cost.
Age deviations of individual trees in even-aged oak stands in Missouri caused variations in the height growth patterns and site index estimates of these younger or older trees. A correction factor for site index estimates on these age-deviant trees is given.
This 29th annual report shows 1974 pulpwood production by county and species group in Michigan, Minnesota, and Wisconsin. Production in these three Lake States climbed to 5.5 million cords in 1974 from 4.7 million cords in 1973.
Presents the locations of instrumented fire-weather stations that record the data necessary for input into the National FIre Danger System.
Describes research on the Pine River in Michigan to determine if large increases in canoeing accelerated streambank erosion. Most erosion was natural, but people sliding and camping on streambanks created some erosion. Heavy canoe traffic was not a cause of erosion.
Prediction of black walnut height at age 25 is graphically represented for two soil-site groups. The landowner or manager can use this growth prediction to assess the productivity of yung black walnut plantations.
The fifth forest inventory of Michigan's forest reports 36.4 million acres of land, of which 19.3 million acres are forested. This bulletin presents statistical highlights and contains detailed tables of forest area, as well as timber volume, growth, removals, mortality, and biomass.
The third measurement of Iowa?s forests was completed in 1990 by the North Central Forest Experiment Station and the Iowa Department of Natural Resources (Brand and Walkowiak 1991). The inventory found that black walnut trees are common in the forests of Iowa. Two out of every hundred trees in the State are black walnuts. To accomplish the inventory, more than 12,769...
Production of high-quality hardwoods is important in Ohio and black walnut ranks as one of the most valuable tree species in the State along with cherry, white and red oak, and ash. Ohio has more walnut growing stock volume than any other state, according to the most recently completed forest inventories in the East. The fourth and most recent measurement of Ohio?s...
Shows that knife planing across the grain can be applied to most domestic hardwood species to produce a satisfactory finish knife-planed surface and flakes for particleboard.
Investigates the effects of site preparation on tamarack regeneration. Site preparation treatments used were broadcast burning, full-tree skidding and full-tree skidding with subsequent burning. Reports the effects of these site preparations on distribution and quality of seedbed types as well as density and initial growth of seedlings.
Documents the forces required to delimb hardwoods as a functional of knife parameters, and identifies opportunities to reduce forces and increase productivity of machines using delimbing knives.
Reports findings of a survey of all primary wood-using mills in the Plains States (Kansas, Nebraska, North Dakota, South Dakota) in 1993 and compares findings with earlier surveys. Production and receipts of industrial roundwood by product, species, and state. The quantity, type, and disposition of wood and bark residues generated by the primary wood-using industry...
Pulpwood production in the Lake States decreased from 9.7 million cords in 1994 to 9.6 million in 1995. Michigan, Minnesota, and Wisconsin pulpwood production is shown by county and species group.
Storage of yellow and paper birch seeds for 12 years does not appear practical but seed visibility can usually be maintained for at least 8 years, if the seeds are kept in closed containers at 36? to 40?F.
Lake States pulpwood production increased 4%--from 9.4 million cords to 9.7 million cords. Central States pulpwood production increased 16%--from 288 thousand cords in 1993 to 333 thousand cords in 1994. Plains States pulpwood production was 111 thousand cords. Pulpwood production is shown by county and species group for Michigan, Minnesota, and Wisconsin.