BIOL 350 Lecture Notes - Lecture 5: Tropospheric Ozone, Soil Retrogression And Degradation, Arable Land
28 Sep 2017
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Document Summary
Due to industrialness of it (high energy, high input) Stable healthy soil has worked well for years through natural regeneration and recycling. It"s a monoculture (one species) bred for certain traits: degraded soil: volume loss (topsoil loss), nutrient loss due to erosion and loss to harvested crops. Polluted water systems (due to fertilizer and pesticides) Fertilizers , pesticides, irrigation help temporarily, but have consequences! To produce fertilizers, pesticides, and irrigation (but we"re running out) Therefore it will become very difficult to harvest, and hard to feed or society without industrial agriculture. The dead plankton get decomposed by bacteria that use up oxygen in the water! Therefore animals die from lack of o2 in the water: climate change, global surface temperature is on the rise (started in the great acceleration period. 1960s: global temperatures are close to a 11000 year peak (planet is set to get hotter than at any time since the last ice age)
