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•Major Categories of Natural Resources – notes
•Key Concepts – notes
What are the
major
categories
of natural
resources?
• Soil
• Land use
• Agriculture
• Water
• Usable
• Fish and wildlife
• Includes uncultivated plants
• Forest
• Energy
• Minerals
• Recreational
• Sum It Up! Natural Resources are objects, materials,
creatures or energy found in nature and used by humans
• “usefulness” can change over time and from
place to place (society).
• “usefulness” if affected by customs and
technology.
Soil
•
•
Land use
– 60% of US land is useful for food and fiber
production
– Of that 60%, only 17% is useable for crop production
Land use planning is an ongoing challenge as population
expands
•
Must be usable by humans to be a natural resource
•
121 vertebrate species have become extinct since
colonial times
408 threatened or endangered species (2006)
Water
Fish & Wildlife
•
– “threatened” means “declining in number”
– “endangered” means “survival in danger”
• $1.1 billion/ year are generated in state
revenue from hunting and fishing licenses
– Plus! Related gear and equipment sales
Forest
•
1/3 noncommercial forestry
– A “mature forest” has very little wood product
– ecosystem
•
2/3 usable commercial forestry
Energy
•
Nonrenewable, renewable, alternative
Minerals
•
Examples: iron, copper, bauxite, lead, zinc, tin, mercury
Recreational
•
Unspoiled nature to swim, camp, hike, hunt & fish
– Coal production increased in the 1990s in the US
– Oil: 1 barrel = 36 gallons = 159 litres
Key Concepts
• Preservation
– An attempt to prevent the use of a natural
resource
– Aim is to “preserve” or keep it intact as it is or was
• Conservation
– An attempt to use a natural resource in a way to
minimize water
– Aim is to maintain the resource in as good of
condition as possible
• Carrying Capacity
– The ability of an ecosystem to provide food and
shelter for a given population.
• Food Web
– A group of plants and/ or animals
– related to each other by the fact that one feeds or
depends for food on the next
• Systems thinking
– Interconnectedness
– The whole versus parts