Map diagram depicts the diminuation of virgin forest land in the U.S. from the mid-19th century through the first quarter of the 20th century.
ILLUSTRATION: KEN KERN
Topsoil completely lost due to lack of windbreak protection and mulch-planting. Note intersecting patterns of plow marks.
MOTHER EARTH NEWS STAFF
TOP: Plan for planting a woodland windbreak. MIDDLE: Cross-section of tree types to plant. BOTTOM: Effects of windbreak on wind velocity.
TOP: Factors to consider when deciding which trees to cull. MIDDLE: Tools and techniques to use for felling trees. BOTTOM: Types of saws and sawing techniques to use when cutting trees.