First (Neolithic) Agricultural Revolution: The beginning of farming marked by plant and animal domestication; spread through routes like the Roman Empire, Silk Road, and Columbian Exchange from hearths such as the Fertile Crescent, Indus Valley, Southeast Asia, and Central America.
Second Agricultural Revolution: Occurred during the Industrial Revolution (1600s–1700s); introduced new technology and farming methods that increased food production, led to better diets, longer lifespans, and larger farms.
Green Revolution (Third Agricultural Revolution): Used high-yield seeds, chemicals, and mechanization to boost food output, especially in developing nations; however, it caused environmental damage and was costly.
A model explaining land use based on distance from a market:
First Ring: Dairy and market gardens (perishable)
Second Ring: Wood for fuel (heavy to transport)
Third Ring: Crops and pasture
Fourth Ring: Grazing livestock
Assumes flat land, same climate, and one market.
Today: Improved transport allows food to travel farther; wood replaced by other fuels; multiple markets exist.
Hunter-gatherer societies: People who hunt and gather food rather than farm; nomadic.
Commercial farming: Growing crops or raising animals to sell.
Subsistence farming: Growing food to feed one's family/community.
Shifting Cultivation: Farmers clear and burn land, use it until nutrients are depleted, then move. Common in Southeast Asia, Latin America, and Sub-Saharan Africa.
Pastoral Nomadism: Moving with animals seasonally in dry areas where crops can’t grow.
Intensive Subsistence (Wet Rice Dominant): High-labor farming in areas with suitable climate for rice.
Intensive Subsistence (Wet Rice Not Dominant): Farming of grains like wheat/barley where rice can’t grow.
Plantation Agriculture: Large-scale, single-crop commercial farming in tropical areas.
Mixed Crop & Livestock: Crops feed animals; animals provide manure and profit.
Dairy Farming: Intensive agriculture focused on milk products; common in NE USA and NW Europe.
Mediterranean Agriculture: Commercial farming in Mediterranean climates; crops like grapes, olives, and seasonal livestock movement (transhumance).
Market Gardening: Small-scale fruit/vegetable farming for local markets; relies on migrant labor.
Ranching: Extensive grazing of animals in dry regions; common in the Western US and similar climates.
Fair Trade: Ensures fair pay and benefits for farmers/workers in developing countries.
Aquaculture: Farming of fish and aquatic organisms under controlled conditions.
Environmental impacts of food production: Includes deforestation, water pollution, and loss of biodiversity.
Luxury Crops: Non-essential, high-value crops like coffee, tea, bananas, and cacao.
Desertification: Land degradation into desert-like conditions, often due to human activity.
Gender roles in agriculture: Women make up 40% of the global agricultural labor force; 70% in subsistence-based regions.
Organic Foods: Positives include job creation and natural practices. Drawbacks: costly, labor-intensive, requires more land, and may cause deforestation.
Challenges of feeding the global population: Issues include population growth, climate change, water scarcity, food waste, and infrastructure limitations.
Contemporary agriculture challenges: Include climate stress, soil/water damage, chemical reliance, and the need to produce more food sustainably.
Bid-rent theory: Land value/use intensity decreases with distance from the market; closer land is used for high-value, perishable goods.
Interdependence of regions: Different regions depend on each other for food, resources, and services.
Intensive farming: Agriculture using high labor/capital on small plots (e.g., plantations, mixed crop/livestock, market gardening).
Food Deserts: Urban or rural areas with limited access to fresh, healthy food. Causes include:
Long distances to food stores
Poor public transport
Store avoidance in low-income areas
Health effects: More fast food consumption → obesity, etc.
Mapped by: comparing food access vs. population, income, transport, and demographic info
Reasons:
Economic: Poverty limits healthy food choices.
Political/historical: Zoning and discrimination prevent investment in certain areas.