Kategóriák: Minden - conservation - biodiversity - regulation - forestry

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Sustaining Terrestri

Human activities significantly impact terrestrial biodiversity, particularly through how land is valued and utilized. Public lands, including national monuments and protected areas, offer crucial habitats and resources but require careful management to balance multiple uses such as mining, grazing, and recreation.

Sustaining Terrestri

Sustaining Terrestrial Biodiversity

Urban Sprawl

Urban Blight
decline in urban services
pop. shift to suburbs
Increase dependence on cars
increases pollution
gas comsumption
highway construction
Loss of agricultural land
urbanized area that spread into rural

Forests Management

Fire Management
nutrients liberated from biomass
natural fires allowed
prescribed burns
Ecologically sustainable forestry
animal power
maintaining all species close to the natual state
Selective-cutting
optimum growth-shade tolerent species
trees of varying age
Clear-cutting (timber-harvesting method)
increases erosion
tree plantations(single species)
Replanting( same age trees)

Land Use Concepts

Maximum Sustained Yeild
Externalities
Tragedy of the Commons

overuse

overgrazing

deforestation

overharvesting

without agreement or regulation
common resources

Federal Regulation (managing common areas)

Fish and Wildlife Sercives
Endangered Species Act
Environmental Mitigation Plan
Environmental Impact Statement(EIS)
National Environmental Pilicy Act(NEPA)

Public Lands

Protected Areas
scientific/ historical significance
wildlife/fish pop.
maintain watershed
Multiple use lands
Mining
Timber Harvesting
grazing
recreation
National Monuments
Protected landscapes /seascapes
Natural reserces /wilderness
Habitat
Managed Resources
National Parks

How humans value land

what it can provide (food, shelter, natural resources)