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21 Cards in this Set
- Front
- Back
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Old growth forest
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an uncut or regenerated primary forest that has not been disturbed by humans or natural disasters
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Secondary growth forest
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a stand of trees resulting from secondary ecological succession
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Tree Plantation
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a managed tract of land with uniformly aged tree with one species that are clear cut after 25 years.
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Strip cutting
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clear cutting a strip of trees along the contour of the land within a corridor narrow enough to allow natural regeneration.
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Selective Cutting
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intermediate aged or mature trees in a natural forest are selected singly and in small groups
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Clear Cutting
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Removing all trees from an area, causes erosion, soil runoff, and loss of soil nutrient.
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Surface Fires
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burn on undergrowth and leaf litter, doesn't kill mature trees, is good because prevents more destructive fires, stimulates germination, keeps diseases under control,
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Crown fire
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extremely hot fire that leaps from treetop to treetop, happens after long time without fire, releases co2 into environment.
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Deforestation
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temporary or permanent removal of large expanses of forest for agriculture.
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National Forest System
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40% of forests in U.S, protected, 155 parks managed by USFS.
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Healthy Forest Restoration act
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made in 2003, allows timber companies to cut down trees in return for clearing more fire prone trees and underbrush.
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Rangelands
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unfenced grasslands in temperate and tropical climates that supply vegetation.
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Pastures
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managed grasslands or enclosed meadows with domesticated grasses
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Overgrazing
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occurs when too many animals graze for too long and exceed the carrying capacity of a range land area. Causes erosion.
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Rotational Grazing
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cattle are confined by portable fencing to one area for a short time and then moved.
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Conservation easements
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deed restrictions that bar future owners of ranches from developing land.
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Buffer zone concept
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protecting an inner core protected by 2 buffer zones in which people can extract resources sustainably.
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Wilderness
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undeveloped land.
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biodiversity hotspots
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areas rich in biodiversity and in danger of extinction
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Ecological restoration
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the process of repairing damage to ecosystems by restoring, rehabbing, replacing, and creating.
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Reconciliation
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science that focuses on inventing and establishing new habitats to conserve species diversity in populated areas.
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