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from article Wood supply and demand
U.S. annual wood pulp production, 1900–2009. (Sources: Forest Service, Commerce Department, American Forest & Paper Association, International Woodfiber Report)
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from article Wood supply and demand
U.S. annual paper and paperboard consumption, and real gross domestic product (GDP), 1970–2009. [Sources: U.S. Bureau of Economic Analysis (GDP); American Forest & Paper Association (apparent consumption, including wet machine board and construction…
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from article Wood supply and demand
Annual U.S. consumption of paper and paperboard by principal category, 1970–2009. [Source: American Forest & Paper Association (excluding wet machine board and construction paper)]
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from article Wood supply and demand
U.S. solid wood and composite wood consumption as a percentage of domestic production.
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from article Wood supply and demand
U.S. timber growing stock net annual growth and removals, billions of cubic feet, 1986–2006.
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from article Wood supply and demand
U.S. real price indexes for delivered timber commodities, 1982–2009. [Source: Bureau of Labor Statistics, Producer Price Indexes (deflated using all-commodity producer price index)]
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from article Kale
Kale (Brassica oleracea var. acephala). (Photo courtesy of Howard F. Schwartz, Colorado State University)
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from article Olive
Olive tree (Olea europaea). (Photo courtesy of Piero Amorati, IC Croce, Casalecchio di Reno; www.Bugwood.org)
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from article Olive
Close-up view of an unripe green olive. (Photo courtesy of Piero Amorati, IC Croce, Casalecchio di Reno; www.Bugwood.org)
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from article Tropical forest
Tropical rainforest on Brunei. (Credit: Rodney Keenan)
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from article Tropical forest
Monsoon tropical forest in Queensland, Australia. (Credit: Rodney Keenan)
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from article Tropical forest
Tropical savanna forest in Northern Territory, Australia. (Credit: Rodney Keenan)
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from article Tropical forest
Natural forest areas (in thousands of hectares; 1 hectare = 2.47 acres) in various climatic domains (boreal/polar, temperate, subtropical, and tropical) from 1990 to 2015. The data are derived from the Global Forest Resources Assessment 2015 by the…
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from article Tropical forest
Tropical forest climatic zones around the world. Tropical rainforests are indicated by dark blue; tropical monsoon forests are indicated by a medium shade of blue; tropical savanna forests are indicated by light blue. (Credit: Based on data compiled…
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from article Pine
Mature sugar pine (Pinus lambertiana) in Sequoia National Park, California. (Photo courtesy of the National Park Service)
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from article Pine
Scots (Scotch) pine (Pinus sylvestris). (a) Female (ovulate) cone, unfertilized. (b) Fertilized cones. (c) Advanced stage in cone development. (d) Cone opening to discharge seeds. (e) Seed scale showing two winged seeds.
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from article Hickory
Leaves of pignut hickory (Carya glabra). (Photo by Robert H. Mohlenbrock, USDA–NRCS PLANTS Database)
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from article Field theory (mathematics)
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from article Field theory (mathematics)
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from article Rice
A long-grain variety of rice (Oryza sativa) growing in a field. (Credit: Keith Weller/Agricultural Research Service, U.S. Department of Agriculture)
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from article Rice
Rice panicle. Each spikelet has a single caryopsis enclosed in the lemma and palea. A centimeter ruler is shown for measurement purposes. (Credit: Agricultural Research Service, U.S. Department of Agriculture)
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from article Rice
Rice grains. (Credit: Howard F. Schwartz/Colorado State University)
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from article Rice
Mechanical harvesting of rice on a farm in northern California. (Credit: Gary Kramer/Natural Resources Conservation Service, U.S. Department of Agriculture)
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from article Rice
Rice stem nodes affected by rice blast lesions. Rice blast is a fungal disease caused by Magnaporthe grisea. (Credit: Donald Groth/Louisiana State University AgCenter)
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from article Rice
Bacterial panicle blight (seen as a discoloration) on rice grains. This disease is caused by Burkholderia glumae. (Credit: Donald Groth/Louisiana State University AgCenter)
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from article Rice
General rice milling operations and products. (Copyright © McGraw Hill)
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from article Sugar crops
Sugarcane (Saccharum officinarum) growing in Cuba. (Credit: Curioso Photography/Shutterstock)
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from article Sugar crops
Sugarbeets (Beta vulgaris). (Credit: Agricultural Research Service, U.S. Department of Agriculture)
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from article Information theory (biology)
Human information processing. The estimates of channel capacity are based on the number of rods in the retina of the eye and the number of hair cells in the inner ear's organ of Corti.
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from article Information theory (biology)
Flow diagram of communication.
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from article Information theory (biology)
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from article Information theory (biology)
Coupling diagram of communication.
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from article Kudzu
Spreading of kudzu (Pueraria montana var. lobata) over a Mississippi landscape. (Photo by Peggy Grub, Agricultural Research Service, U.S. Department of Agriculture)
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from article Biomass
Wood materials are common sources of biomass. They can be burned directly for energy or processed in industrial facilities to produce renewable biofuels. (Credit: alffoto/Getty Images)
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from article Biomass
Carbon cycle, showing conversion of solar energy to fuel and electricity. (Copyright © McGraw-Hill Education)
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from article Biomass
Methods of converting biomass to energy, fuels, and chemicals. (Copyright © McGraw-Hill Education)
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from article Invasive forest species
The emerald ash borer (Agrilus planipennis) is a destructive invasive forest species. Native to northeastern Asia, this wood-boring beetle has devastated large areas of forests in North America and Europe. (Credit: Benjamin Smith)
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from article Invasive forest species
Perennial vine legume kudzu (Pueraria montana) growing in California. (Copyright © California Department of Food and Agriculture)
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from article Logging
Feller-buncher cutting tree. (John Deere)
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from article Logging
Forwarder loading logs for transport to landing. (John Deere)
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from article Logging
Heavy-duty log truck-trailer being loaded with a grapple. Part of a steel yarding tower is visible at the left and is rigged with a skyline cable system. (Kenworth Truck Co., Division of PACCAR)
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from article Surface (geometry)
Part of a dihedron (the rest has been torn away), showing dihedral angle.
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from article Surface (geometry)
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from article Surface (geometry)
Some quadric surfaces, with parameters a, b, and c. (a) Ellipsoid; 0 < c < b < a. (b) Hyperboloid of one sheet; 0 < a < b < c. (c) Elliptic paraboloid; 0 < a < b and c > 0. (d) Hyperboloid of two sheets; 0 < a < b < c. (e) Hyperbolic paraboloid; c >…
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from article Surface (geometry)
Surface of revolution. The generating curve (in the yz plane) is f(y,z) = 0. The axis of revolution is the z axis.
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from article Surface (geometry)
Sphere, with a zone and a lune.
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from article Surface (geometry)
Catenoid. The axis of revolution is the y axis.
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from article Interpolation
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from article Interpolation
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from article Interpolation
