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6.3 Food Production- production and solution (air pollution and climate…
6.3 Food Production- production and solution
agriculture
producing food has major environmental impacts
biodiversity loss
agrobiodiversity: loss of crops diversity
soil
water
air pollution
human health
soil degradation
topsoil erosion is a worldwide problem
pesticides can also contaminate soil
consequences
water pollution
loss of soil fertility
release of carbon
drought and human activities head to extreme soil degradation AKA desertification
excessive irrigation can degrade soil and pollute water
soil salinization
waterlogging
water consumption and water pollution
aquifer depletion: uses 70% of the freshwater
water pollution: 60% of all water pollution
eroded topsoil flows sediments
poisonous pestides will run off into waterways too
nutrients from fertilizarsn run into water ways and cause eutrophication
pesticides and pest
nature controls most pests
synthetic pesticifes
insecticides
herbicides
fungicides
rodenticides
alternatives
cultuvational controls
ecological controls
biological controls
benefits
work fast
increase food supplie
same human lives from insect-borne diseases
can be stored and shipped easily
problems with pesticides:
some pesticides harm wildlife
ends up being expensive for farmers
don't stay effective for long
air pollution and climate change
slash and burn agriculture
air pollution agriculture emits about 25% of the world's greenhouse gas
meat production problems= Agriculture problems + extra!
habitat destruction
overgrazing
water consumption
water pollution
climate change
problems with fisheries
overexplotation
many fish are contaminated
trade-offs
feedlots and CAFOs
Aquaculture
How can we produce food more sustainably?
conserve topsoil
intercropping
terracing
controur planting
wind breaks
no-till farming
don-t use any top soil at all
reduce soil salinization desertification
avoid overgrazing
plant plants and other plants
produce and consume meat and dairy products more sustainably
expand organic agriculture
builds soil organic matter instead of depleting it
reduces erosion
reduces water pollution
uses less fossil fuel energy
can be more profitable
better for human health