Lecture2EnvironmentalIssues

Lecture2EnvironmentalIssues - Sulfur Cycle with Human...

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Environmental Issues Lecture 2
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Major Environmental Trends
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Critical Environmental Problems Loss of biodiversity Polluted Water Polluted Air Loss of Productive Soil Greenhouse Warming Ozone Depletion Impacts on Global Geochemical Cycles Summary:  Loss of Critical Natural Capital
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The Global Geochemical Cycles Hydrologic Carbon Nitrogen Sulfur Phosphorous
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Contributions to Global Warming Gas Percent Contribution Carbon Dioxide 50 Methane 19 CFC’s 17 Tropospheric Ozone   8 Nitrous Oxide   4
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The Natural Hydrologic Cycle
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The Hydrologic Cycle - Human Impacts
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The Carbon Cycle
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The Carbon Cycle with Human Impacts
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The Natural Nitrogen-Sulfur Cycle
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The Nitrogen Cycle with Human Effects
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Unformatted text preview: Sulfur Cycle with Human Impacts Phosphorous Cycle with Human Effects Conclusions Human activities are inducing a 6 th major upheaval. The other five: Ordovician (440 million years ago) Devonian (365 million years ago) Permian (245 million years ago) Triassic (210 million years ago) Cretaceous (66 million years ago) Planetary systems are in distress Global average temperature is rising Species extinction rates are 100 to 1000 times higher than before the arrival of humankind Unsustainable activities are destroying the basis for the economy and ultimately, life itself....
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This note was uploaded on 08/27/2011 for the course BCN 6585 taught by Professor Kibert during the Fall '08 term at University of Florida.

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Lecture2EnvironmentalIssues - Sulfur Cycle with Human...

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