Unit 5: Agriculture and Land Use

Unit 5: Agriculture and Land Use

Unit 5 Assessment Dates

  • Updated: 12.15.25

  • VC/FRQ 5.1: Thursday 1.15.26

  • VC 5.2: Tuesday 1.27.26

  • Unit 5 Exam: Thursday 1.29.26

Enduring Understandings

  1. Resource Availability and Cultural Practices: The availability of resources and cultural practices significantly influence agricultural practices and land-use patterns.

  2. Historical Changes in Agriculture: Agriculture has evolved over time due to cultural diffusion and technological advancements.

  3. Variability in Agricultural Production and Consumption: Patterns of agricultural production and consumption differ across locations, presenting distinct environmental, social, economic, and cultural opportunities and challenges.

Topic 5.1: Commercial and Subsistence Agriculture

Learning Objective

  • Define and identify characteristics, methods, and spatial distributions of commercial and subsistence agriculture.

Commercial Agriculture

  • Definition: Large-scale production of crops for commercial sale.

  • Characteristics:   - Reliance on pesticides owing to the technology needed to apply them.   - Economies of scale: Commercial farms can produce crops at a lower cost per unit due to larger scale.

  • Distribution: Identified on maps, indicating areas where commercial agriculture primarily takes place.

  • Impact on Small Family Farms: The rise of commercial agriculture often undermines small family farms due to competition.

Subsistence Agriculture

  • Definition: A type of farming where crops are grown primarily for the farmer's family consumption rather than for sale.

  • Distribution: Shown on maps with areas primarily practicing subsistence agriculture.

  • Types:   - Slash-and-Burn Agriculture: A method where forests are cleared and burned to create fields for agriculture. Commonly associated with tropical rainforest areas.   - Pastoral Nomadism: Livestock is herded to find fresh pastures.   - Transhumance: Seasonal migration of livestock between fixed summer and winter pastures.

  • Problems Faced: Subsistence agriculturalists often deal with food insecurity and limited trade opportunities.

Agricultural Methods

  • Intertillage: Planting different crops in the same area to maximize production and maintain soil fertility.

  • Crop Rotation: Alternating the crops grown in a particular field to improve soil health, as opposed to moving fields that is seen in practices like intertillage.

  • Deforestation: Increased reliance on slash-and-burn methods since the 1990s has contributed to significant deforestation in places like the Amazon.

Topic 5.2: Agricultural Origins and Diffusions

Learning Objective

  • Identify major centers of domestication of plants and animals and explain how they diffused globally.

Neolithic Agricultural Revolution

  • Hunting and Gathering: Pre-agricultural societies relied on hunting and gathering before the development of farming.

  • Agrarian Society: Marked by the specialization of labor and establishment of permanent settlements.

  • Major Hearths:   - Southwest Asia: Known for seed crops (e.g., wheat).   - Southeast Asia: Noted for root crops (e.g., tubers).

  • Columbian Exchange: Transfer of plants and animals between the Eastern and Western Hemispheres, impacting agricultural practices worldwide.

Diffusion Methods

  • 1st/2nd Agricultural Revolutions: Introduction of new crops and livestock bred for yield.

  • Plantation Crops: Sugar, coffee, and other crops were introduced into colonies.

  • Green Revolution: Innovative agricultural technologies improved crop yields, impacting global food supply.

Topic 5.3: The Second Agricultural Revolution

Learning Objective

  • Explain the advances and impacts of the Second Agricultural Revolution.

Key Advances

  • Crop Rotation: Technique developed to enhance soil nutrients.

  • Heavy Plow and Fertilizers: Enabled tilling of more land and sustaining fertility.

  • 1540s-1700s: Marked technological developments in England greatly increasing agricultural efficiency.

Agricultural Techniques

  • Relocation of Crops: Plants were grown in various fields over years to restore soil nutrients.

  • Iron Plow: Utilized horse power to increase tillage efficiency.

Topic 5.4: The Green Revolution/3rd Agricultural Revolution

Learning Objective

  • Explain consequences of the Green Revolution on food supply and the environment in developing regions.

Overview of the Green Revolution

  • Goal: To increase food production in developing areas.

  • Input Requirements:   - GMO Seeds: Genetically modified for higher yields.   - Irrigation: Necessary for crop growth.   - Fertilizers and Mechanization: Needed for maximizing production.

Pros of the Green Revolution

  • Increased Food Production: Resulting from high-yield crops and agricultural technologies.

  • Crop Surpluses: Helped reduce food prices and improve accessibility.

  • Expand of Agricultural Land Cultivation: Increased overall food production.

  • Famine Prevention: Helped avert famine in developing regions.

Cons of the Green Revolution

  • High Input Cost: Often unaffordable for many farmers; can lead to fewer farms.

  • Environmental Impact: Intensive farming can degrade soil and reduce fertility.

  • Loss of Seed Diversity: GMO yields and hybrid seeds require consistent repurchase each season.

Topic 5.5: Intensive and Extensive Agriculture

Learning Objective

  • Explain the economic forces that influence agricultural practices.

Intensive Agriculture

  • Definition: Agriculture that involves higher labor inputs per unit area.

  • Examples:   - Market Gardening: Small scale farming for local markets.   - Truck Farming: Larger scale farming for long-distance distribution, utilizing immigrant labor.

Extensive Agriculture

  • Definition: Involves low inputs of labor and capital relative to land area.

  • Examples:   - Nomadic Herding: Pastoralism that emphasizes livestock management over extensive areas.   - Shifting Cultivation: The practice of rotating agricultural land after exhausting its resources.

Topic 5.6: Modern Agricultural Production Regions

Learning Objective

  • Compare the relationship between modern agriculture distribution and climatic regions.

Climate Zones and Agriculture

  1. Tropical: Year-round high temperatures and precipitation.    - Crops: Bananas, coffee, rice.

  2. Mediterranean: Warm, dry summers and rainy winters.    - Crops: Olives, grapes.

  3. Arid/Semi-Arid: Varied temperatures and low precipitation.    - Crops: Wheat, millet.

  4. Temperate: Characterized by four seasons.    - Crops: Corn, soybeans, dairy products.

Topic 5.7: Environmental Sustainability & Consequences of Agricultural Practices

Learning Objective

  • Explain the environmental and societal consequences of agricultural practices.

Types of Environmental Impacts

  • Land Degradation: The deterioration of the land's productive capacity.

  • Salinization and Soil Erosion: Resulting from improper agricultural practices.

  • Overgrazing: Causes further land degradation.

  • Desertification: Transforming fertile land into desert mainly due to human impact.

Conservation Efforts

  • Sustainable Agriculture Practices: Rotate crops, use integrated pest management, and apply conservation tillage.

  • Reforestation and Afforestation: Restoring deforested areas to combat soil degradation and improve biodiversity.

Topic 5.8: Von Thünen Model

Learning Objective

  • Describe the Von Thünen model in explaining patterns of agricultural production.

Model Assumptions

  1. Single market location for agricultural products.

  2. Uniform land quality and climate across the region.

  3. Isolated state without external influences.

  4. Equal access to transportation for all farmers.

  5. Profitability driven by transportation costs and land value.

Cost Influence Factors

  • Transportation Costs: Higher costs for goods that perish quickly; e.g., dairy and vegetables.

  • Land Costs: Higher near urban centers; farmers choose crops based on perishability and market access.

Topic 5.9: Women in Agriculture

Learning Objective

  • Explain variations in female roles in agricultural production and consumption.

Roles in Different Regions

  • Developing Countries: Women often heavily involved in subsistence agriculture.

  • Developed Countries: Women may engage in more formal employment within agricultural sectors.

Topic 5.10: Settlement Patterns and Survey Methods

Learning Objective

  • Identify rural settlement patterns and surveying methods.

Settlement Patterns

  • Dispersed Settlement Pattern: Houses are spaced far apart, common in more temperate and rural areas.

  • Nucleated Settlement Pattern: Houses are clustered together, often found in areas where farming radiation is common.

Surveying Methods

  • Survey Systems:   - Township and Range System: Rectangular survey method in the U.S.   - Metes and Bounds System: Uses natural landmarks to delineate property.   - Long Lot System: Land parcels are long and narrow.

Topic 5.11: The Global System of Agriculture

Learning Objective

  • Explain interdependence in agricultural production and consumption globally.

Economic Interdependencies

  • Comparative Advantages: Regions specialize in crops suited to their climate and soil.

  • Trade Networks: Link surplus production areas to deficits, enhancing food security globally.

  • Technological Impacts: Innovations like refrigeration and containerization enhance the ability to transport food further.

Topic 5.12A: Five Economic Sectors / Levels of Economic Activity

Learning Objective

  • Explain how economic forces influence agricultural practices.

Economic Sectors

  1. Primary Sector: Extraction of natural resources (e.g., agriculture, mining).

  2. Secondary Sector: Manufacturing and production from raw materials.

  3. Tertiary Sector: Services industry providing support (e.g., retail).

  4. Quaternary Sector: High-level specialized services (e.g., finance).

  5. Quinary Sector: Decision-makers affecting large demographics (e.g., CEO's, politicians).

Topic 5.12B: Modern Agribusiness

Learning Objective

  • Explain economic forces influencing agricultural practices in agribusiness contexts.

Agribusiness

  • Large Scale vs. Family Farms: Trends of consolidation in agriculture.

  • Commodity Chains: Linking production with distribution on a global scale.

  • Vertical Integration: Corporations may control multiple stages of production.

Topic 5.13: Positives of Modern Agriculture

Learning Objective

  • Identify and explain the benefits of modern agricultural practices.

General Positives

  1. Increased food production and higher yields.

  2. More efficient through economies of scale.

  3. Year-round availability due to advanced logistics.

  4. Technological innovations enhance agricultural precision and reduce waste.

Topic 5.14: Negatives of Modern Agriculture (Food Inc.)

Learning Objective

  • Identify and explain the negatives of modern agricultural practices.

General Negatives

  1. Environmental concerns from overuse of soil and water.

  2. Loss of biodiversity due to monocropping.

  3. Heavy reliance on pesticides and fertilizers impacting health.

Topic 5.15: Food Production and Consumption Trends

Learning Objective

  • Describe shifts in trends related to food production and consumption.

Trends Influencing Production

  • Urban farming, Community Supported Agriculture (CSA), and local food movements.

  • Dietary Shifts: Growing trends in organic and sustainably-produced foods.

Topic 5.16: Challenges of Contemporary Agriculture

Learning Objective

  • Explain challenges and debates related to contemporary agricultural practices.

Challenges

  • Agricultural policies, Subsidies, Fair Trade issues.

  • Monoculture risks, Food insecurity zones, and issues relating to food deserts.

  • Impact of adverse weather, and loss of arable land due to urbanization.

Conclusion

  • The comprehensive understanding of agricultural practices across different societies and their impacts leads to better policy-making and resource management in relation to food production, sustainability, and land use.