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14 terms

Land Resources

STUDY
PLAY
Federal govt
owns 35% of land
Private citizens
owns 55% of land
State and local govt
owns 7% of land
Native americans
owns 3% of land
Dept of agriculture
forest services
US land use
helps determine human impact on ecosystems
forests
1/3 of earth's area, protect watershed, carbon sinks and release CO2
harvesting trees
3.5 million ft of wood harvested, 50% burned directly, 3/4 of other 50% used for paper
selective cutting
mature trees cut individually or in small clusters
shelter wood cutting
removal of all mature trees in an area over an extended period of time
seed tree cutting
almost all trees removed, some are left to provide seeds
clear cutting
all trees are cut in an area
deforestation
clearing large expenses of forest globally
national wilderness preservation system
highest level of protection