Human Geography Unit Test - 5 Flashcards
What has caused increased demand for agriculture that places added stress on the environment?
- Global competition
- Local demand
- Population
Double cropping
Panting and harvesting on the same place of land twice a year
What is the impact of double cropping
- Reduces soil quality
- Prevents need for additional land for agriculture
Intercropping
Growing two or more crops simultaneously on the same field
What is the impact of intercropping
- Replenishes soil and reduces runoff
- Leads to higher yields
- Requires more irrigation and fertilizer
Terrace farming
When human farm off of hillsides built like stairs
Impacts of terrace farming
- Better access to crops
- Irrigation from mountain runoff
- Variety in foods grown
- Reduces soil erosion
- Can lead to mudslides
- Can disrupt normal water runoff patterns
Monoculture
Specialising in one crop
Impacts of monoculture
- Loss of biodiversity
- Makes ecosystems more vulnerable to diseases
- Loss of efficient absorption and breakdown of pollution
Draining wetlands
The draining of wetlands for agricultural and development purposes
Impacts of draining wetlands
- Loss of natural water, cleaning, and pollution absorption systems
- Loss of biodiversity and species
- Increased vulnerability of flooding
Irrigation
Diverting water from its original runoff rout to help grow crops
Impacts of irrigation
- creates arable land in dry places
- Improved crop yields
- Contributes to groundwater sources
- Disrupts natural runoff route
- Salinizes the soil
- Depletion of groundwater sources in some cases
Soil salinization
Evaporation of water that leaves salt residue behind
Impacts of salinization
- Prevents crops from absorbing nutrients
- Causes land to become infertile
Overgrazing
Excessive grazing in an area to the point where the soil becomes permanently damaged
Impacts of overgrazing
- Reduces biodiversity and productivity of land
- Cases vegetation to lose the ability to regenerate itself
- Lack of vegetation leads to severe soil erosion
Soil desertification
Transition of fertile land to desert
Impact of desertification
- Reduces biodiversity
- Depletes crop and pant life because it cannot support it
Slash and burn agriculture
All vegetation in an area being being cut down and burned
Impacts of slash and burn agriculture
- Ash can give soil nutrients
- Can contribute to climate change in the long term
- Can cause and reduce forest fires depending on how it is carried out
Pesticides
Chemicals that are sprayed on crops to ward off or kill any insects or animals
What are the impacts of pesticides
- Plants become resistant to bugs
- Higher yields
- Reduces need for intensive farming
- Pollutes groundwater and surrounding vegetation
- Reduces biodiversity
Fertilizers
Any substance added to soil to increase productivity