Forests and Their Resources

Which approach to resource management aims to harvest resources in ways that minimize impact on the ecosystem and processes that provide the resource?

• maximum sustainable yield
• ecosystem-based management
• adaptive management
• watershed management

Which phrase is true for private logging operations?

• produces a monoculture
• produces trees of different ages
• produces trees of different species
• leads to high biodiversity

Prescribed burns are fires that

• are caused by lightning.
• are set by humans.
• never get out of control.
• increase the risk of injury.

The removal of snags following a fire is called

• monoculture.
• prescribed burning.
• sustainable forestry.
• salvage logging.

A renewable resource is harvested sustainably if

• the amount of replacement is less than the amount harvested.
• the amount of replacement is equal to the amount harvested.
• soil erosion is prevented.
• replacing trees costs less than harvesting trees.

Which of the following words best summarizes the adaptive management approach shown in the diagram?

• rigid
• unscientific
• adjustable
• simple

One disadvantage of the selection system of timber harvesting is that it

• produces even-aged stands.
• produces a monoculture.
• causes soil erosion.
• is more dangerous for loggers.

Deforestation is particularly harmful in arid regions because it can lead to

• desertification.
• a massive loss of biodiversity.
• loss of jobs.
• a decrease in greenhouse gases.

What is the role of private timber companies in national forests?

• They plan the sale of trees that are harvested.
• They build roads for logging.
• They manage timber sales.
• They receive the profits from logging.

The National Forest Management Act

• requires plans for national forests that follow multiple use and maximum sustainable yield guidelines.
• requires plans for national forests that follow multiple use and ecosystem-based management guidelines.
• encourages prescribed burning as a means of protecting national forests.
• promotes the removal of small trees and underbrush by timber companies.