24.0 Analyze the interaction between environmental and natural resource sciences Forest Management.

24.0 Analyze the interaction between environmental and natural

resource sciences

Forest Management

Products from commercial treesNuts and fruitsOils, decorations, extractsResins, gums, turpentineMulch, tannin, drugs, oils, dyesSugar, syrupVeneer, charcoal, pitch, pine oilPoles, postsPaper, paper products, wall boardsLumber, bolts, timber, wastes, ties

Forest Regions of the United States

Northern Coniferous ForestSoftwoods, between Canada and the U.S. borders

are soft and hardwoods. Region has swamps, rivers, lakes and marshes. The climate is cold, this is the largest forest in North America. Trees that dominate are evergreens and pulpwood trees. Species of importance include white spruce, Sitka spruce, black spruce, jack pine, black pine, tamarack and western hemlock

Northern Hardwoods ForestRegion reaches from Southeastern Canada to New

England to the northern Appalachian Mountains. It is populated by beech, maple, hemlock and birch trees

Central Broad-leaved forestLocated east of the Mississippi river, a farming

region mostly owned by private entities. Wood of high quality is produced here, hardwoods such as maple, beech, hickory, oak, poplar, gum, walnut, cherry, ash, cottonwood and sycamore.

Southern ForestIn the southeast portion of the United States

(covers Delaware to Florida and Oklahoma to Texas) It is the forest with the most potential for reaching future lumber needs. Conifers are the most important trees in this forest, including Virginia, long leaf, loblolly, shortleaf and slash pines. Hardwoods included are Oak, Poplar, maple and walnut

Bottomland Hardwoods ForestFound along the Mississippi River, contains mostly

hardwood trees, the soil is highly fertile which hardwoods such as oak, tupelo and cypress thrive in.

Pacific Coast ForestCalifornia, Oregon and Washington also the most

productive forest in the United States. Douglas Fir, Ponderosa Pine, hemlock, western red cedar, Sitka Spruce, sugar pine, and noble fir are some of the conifers found in this region. Important hardwoods are Oak, cottonwood, maple and alder

Rocky Mountain ForestMuch less productive than the other forests in North

America. Western Pines are the trees of commercial value including western white pine, lodge pole pine and ponderosa pine. Aspen is the only hardwood grown in this area of commercial importance.

Tropical ForestLocated in Southern Texas and Florida. Major trees

in this forest are Mahogany, mangrove and Bay which are all unimportant commercially, but ecologically important.

Hawaiian ForestThe wet forest region grows ohia, boa, tree fern,

kuka, tropical ash, mamani and eucalyptus. These woods are used in the production of furniture and novelties.

Relationship between forests and other natural resources

Forests play important roles in the water cycleAs water circulates from oceans to rivers to lakes, the forest

filters the rain as it falls and serve as storage areas. A forest regulates water flow, making it possible for fish and other animal and plant life to survive

Forests filter rain and help reduce the erosion of soilsTrees and shrubs are responsible for removing much of the

pollutant materials from the air and water run off. They also help reduce the harmful effects of excess fertilizer that enters underground water systems.

Forests and living organisms have many relationshipsAlgae, fungi, mosses, and other plants make their homes in the

forest. Forests also provide shelter, food, protection and nesting sites for many species of birds and fish. Shade provided by the forest maintains proper water temperatures for the growth and reproduction of aquatic life.

Forests and wildlife relationships greatly varyDepending on species, the wildlife in each forest region varies

due to climate and harvesting times

Important types and species of trees in the United States

Softwoods:Douglas firBalsam FirEastern and Western HemlockEastern Red and White Cedar, Western Red

CedarWhite PineSouthern PinePonderosa PineSitka Spruce

Important types and species of trees in the United States

Hardwoods:BirchMaplePoplarSweetgumOakAspenAshBeechCherry SycamoreHickoryBlack WalnutBlack Willow

Tree Growth and PhysiologyTrees use carbon dioxide and water to do what?

Manufacture simple sugars in their leaves which use additional carbon dioxide, oxygen, hydrogen to convert simple sugars into complex sugars and starches. Nitrogen and minerals found in the soil are used to manufacture proteins which are the building blocks for growth and reproduction.

How does a new tree grow?Seeds, stumps, roots, tree parts

Roots and ShootsExtend through cell division and elongation. Tree roots, stems

and trunks grow in diameter by adding cell layers near their outer surfaces. This growth is called the cambium and can be seen as the rings in a cross-section of tree.

Water and MineralsWater and minerals are taken up through the xylem which is

located just inside of the cambium. Outside of the cambium is the phloem or inner bark which carries food manufactured in the leaves to the rest of the tree. Each year the tree grows new xylem, phloem and cambium as well as heartwood. Heartwood is the inactive core that gives the tree strength and rigidity.

Properties of woodHardnessWeightShrinkageWarpEase of workingPaint and nail holdingDecay resistanceBending strengthStiffnessToughnessSurface characteristics

Woodlot managementWhat is a woodlot?What must be considered when managing

one?How are they restocked?Is it time and labor intensive?How are harvests planned?How are they protected?How is lumber seasoned?

ActivitiesTree Part Collection

Collect 10 different trees. Include leaves, seeds, and branches. Label and note where they were found. (handout)

Go the following website: http://www.fs.fed.us/r3/asnf/ navigate around the page and do the following:Find the “contact us” link – send an email explaining what you

have learned and that you would like to come learn in the forest.

Find the “volunteering” link – what can you do to volunteer?Check out the site, is it easy to navigate? What is interesting to

you? What would you like to do?

Apache-Sitgreaves Field TripTravel to Glenwood and identify the trees as well as

visit with a forest ranger.

Resources

http://forestry.about.com/

Agriscience Text Book Unit 10 Forestry Management