maintains biological diversity, long-term high-quality timber production, and multiple-use shelter-wood cutting: multiple-step cutting which removes older, diseased, or unwanted trees in stages, resulting in an even-aged stand seed-tree cutting: harvests nearly all trees in one cutting, leaving a few seed-producing trees Rangelands naturally support large numbers of herbivores which feed on the vegetation carrying capacity: the maximum number of herbivores that can graze a given area without destroying the metabolic reserves needed for grass renewal overgrazing results from too many animals graze for too long - controlled/eliminated by controlling stocking rates and regulating grazing patterns (continuous/deferred rotation) Parks The US Park System was created in 1912 to conserve and preserve scenery, wildlife, and natural and historic objects for the use, observation, health, and pleasure of people The greatest problems stem from overuse, development, pollution, and poaching of resources Solutions for National Parks to meet two goals (preserve nature in parks and make nature more available to people) - educate the public about the needs to preserve, protect, and expand the system - remove the Park Service from the Interior Department - expand personnel, income, and fees for an increased number of parks FOREST RESOURCES Since the advent of agriculture, we have decreased the earth's forest cover by at least one-third.
(herbivores; feed; on the vegetation) (the metabolic reserves; needed; for grass renewal) (multiple-step cutting; removes; older) (the vegetation; carrying; capacity) (too long - controlled/; eliminated; ) (the maximum number of herbivores; graze; for too long - controlled/) Context(the maximum number of herbivores graze,List([428, 603))):(Rangelands; naturally support; large numbers of herbivores) Context(the maximum number of herbivores graze,List([428, 603))):(the maximum number of herbivores; graze for too long - controlled/ without destroying; the metabolic reserves needed for grass renewal) Context(the maximum number of herbivores graze,List([428, 603))):(The US Park System; was created; T:in 1912; to conserve and preserve scenery, wildlife, and natural and historic objects for the use, observation, health, and pleasure of people; T:Parks) (herbivores; can graze; a given area) (harvests; leaving; a few seed-producing trees) (The US Park System; to conserve; ) (we; have decreased; the earth's forest cover; T:by at least one-third; T:Since the advent of agriculture) (poaching of resources; to make; nature more available to people) (The US Park System; to preserve; scenery, wildlife, and natural and historic objects for the use, observation, health, and pleasure of people)
the maximum number of herbivores graze,List([428, 603)) the maximum number of herbivores graze,List([428, 603)) the maximum number of herbivores graze,List([428, 603))
herbivores the metabolic reserves multiple-step cutting the vegetation too long - controlled/ the maximum number of herbivores Rangelands the maximum number of herbivores The US Park System herbivores harvests The US Park System we poaching of resources The US Park System
feed needed removes carrying eliminated graze naturally support graze for too long - controlled/ without destroying was created can graze leaving to conserve have decreased to make to preserve
on the vegetation
for grass renewal
older
capacity
for too long - controlled/
large numbers of herbivores
the metabolic reserves needed for grass renewal
T:in 1912 to conserve and preserve scenery, wildlife, and natural and historic objects for the use, observation, health, and pleasure of people T:Parks
a given area
a few seed-producing trees
the earth's forest cover T:by at least one-third T:Since the advent of agriculture
nature more available to people
scenery, wildlife, and natural and historic objects for the use, observation, health, and pleasure of people