Категории: Все - agriculture - pollution - sustainability

по huang caoling 9 лет назад

523

Food Resources

Innovative strategies in agriculture aim to balance productivity with environmental sustainability. Integrated Pest Management (IPM) and crop rotation help reduce pesticide use and enhance yields.

Food Resources

Food Resources

Fish & Shellshish

Aquaculture
shellfish
seaweeds
Fish farming
by catch
fishery collapse
3rd major food source

Intergrated Pest Management(IPM)

Effects
Higher yields
lower pesticide use
Minimize pesticide inputs

GMOs

-ves
regulation
biodiversity
human safety
+ves
Increased profits
Better quality
Increased yields

Causes of Malnourishment

Diverted
Biofuels
Animal farming
Politics
Poor governance
War refugees
Poverty
Starvation
Lack of resources

CAFO's (concentrated animall feeding operations)

Alternatives
free range

more land

less antibiotics

more sustainable

less disease

Cage free
runoff can contaminate water resources
Waste 2000 tons
Antibiotic -resistence?
High density farming -ethical?

Alternative Farming

Desertification

shifting agriculture

nomadic grazing


low pop. and subsistence farming

Contour Plowing
Subtopic
Agroforestry
Crop Rotation
Intercropping

Green Revolution

Irrigation system
salinization/ salt intrusion
waterlogging
deplete groundwater& aquifers
allowed farming in areas not adequate before
Monocropping
Pesticides
causes a cyclical effect
selective
broad-spectrum
herbicides
insecticides
Fertilizers
synthetic

use fossil fuels and are more likely to carried by runoff.

organic
Machinery

Nutritional Needs

Food Security

access to sufficient, safe and nutritious food & diet meets needs for healthy lifestyle.


Insecurity: do not have adequate access to food.

WHO
anemia
famine
3 billion malnourished