13 Land Resources Ch. 13

Who owns the MOST land in the United States?

Citizens, corporations, and non-profit organizations, as private land holdings.

What is the tree harvesting method most preferred and used by timber companies?

Clear-cutting

Which of the following is NOT a threat to U.S. National Parks?

Ecosystem services

What is an important ecosystem service provided by forests?

They maintain watersheds

It takes approximately 200 years for a replacement forest to accumulate the same amount of carbon that is stored in an old-growth forest.

True

Logging, cattle grazing, and mineral extraction are all allowed on public land in the United States.

True

Public rangelands in the United States have improved since the 1930s largely due to the passage of laws restricting the number of grazing livestock permitted.

True

Slash and burn agriculture can be sustainable if done properly.

True

Which of the following statements about clear-cutting is FALSE?

Wood from clear-cut forest would bear the FSC certification.

A protected zone that connects isolated unlogged or undeveloped areas is called:

a habitat corridor

The Wilderness Act of 1964:

allows the U.S. government to set aside federally owned land that retains its primeval character and lacks permanent improvements.

Conservation strategies that set aside ecosystems for preservation:

are meant to preserve an area's diversity

Conventional forestry practices that manage for timber production:

are reflected in the planting of a monoculture of young pines that are all the same age and are planted in rows a fixed distance apart.

National Parks are increasingly becoming like islands. What is meant by this is:

National parks are increasingly becoming islands of natural habitat surrounded by human development that limits the areas in which wild animals may range, forcing them into isolated populations.

What is the relationship of overgrazing to desertification?

Overgrazing results in barren exposed soil; if erosion continues, it contributes to desertification.

Which of the following statements about rangelands is TRUE?

Rangelands have native grasses with fibrous root systems that can survive extended periods of drought.

Forests play an important role in the hydrologic cycle by:

recycling 75% of precipitation to the atmosphere by transpiration and evaporation

Why are tropical rain forests considered so important to global ecology?

All of the above. They contribute greatly to the world's carbon and oxygen cycles. They contain much of the world's biodiversity. They retard soil erosion.

Fifty percent of all the wood that is harvested from the world's forests is:

burned directly as fuelwood

Federally owned land encompasses all of the following EXCEPT: land that provides critical biological habitat land that possesses historical or cultural significance land that contains important resources such as minerals and fossil fuels no exceptions, all of the above are examples of federally owned land

no exceptions, all of the above are examples of federally owned land