EnvironmentalFactorsx2x

EnvironmentalFactorsx2x - Environmental Factors Is it...

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Environmental Factors
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Is it fundamentally the earth or humanity that produces food?
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If the earth, key indicators suggest some limits are already approaching. If humanity, past experience is ground for optimism. When asked for more food, the world's farmers, helped by agricultural scientists, almost always come through.
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Both human and natural resources are essential to agriculture. But the balance between the two is shifting. Every year the world’s population gains nearly 90 million people, while farmland loses an estimated 25 billion metric tons of topsoil.
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Land scarcity + Water scarcity = Food scarcity
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Land scarcity Population Increases Land development The agricultural frontier is closing, as farming moves from a long era of land and water abundance to natural resource scarcity coupled with dependence on technology and fossil fuel- based energy. In 1961, the amount of cultivated land supporting the food needs of each of the earth’s inhabitants was 0.44 hectares.
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This note was uploaded on 09/08/2010 for the course NUFS 139 at San Jose State.

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EnvironmentalFactorsx2x - Environmental Factors Is it...

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