RESOURCE MANAGEMENT- global food Flashcards
define food security:
the state of having reliable access to a sufficient quantity of affordable, nutritious food
define food insecurity:
the state of being without reliable access to a sufficient quantity of affordable, nutritious food
why is global demand for food increasing?
- population increase- annual % increase per year in Africa is 2.51
- wealth is increasing- China calorie consumption has increased from 2,100- 3,000 as wages have increased from 1981-2011
define sustainable food/ agriculture:
production of food that increases yields to meet demands from future generations whilst protecting the environment
deficiency diseases:
- beri beri
- anaemia
factors affecting food supply:
- climate
- conflict
- technology
- poverty
- water stress
- pests + disease
how might climate affect food supply?
- crops need at least 250mm of rainfall
- without this rainfall there is drought and crops die
- floods + storms can also damage crops
- in Zambia there is strong droughts in parts as well as flash flooding + water logging
how might conflict affect food supply?
- farmers have to evacuate their land so no food is grown
- food can be stolen by soldiers
- soldiers can pollute water sources
- soldiers can ruin fields
- Yemen has been suffering from war since 2014
how might technology affect food supply?
- HICs can afford to invest in things such as combine harvesters and irrigation systems
- LICs do not have these tools meaning their food may not be as fresh
how might poverty affect food supply?
- don’t have enough money to buy food/ seeds to grow food/ tools to plant seeds
- weak immunity
- high risk if disease
- The Global Hunger Index ranked CHAD as the 3rd most hungry country in the world
how might water stress affect food supply?
- water stress occurs when a country doesn’t have enough water to fulfil its needs
- this can be combatted by things such as irrigation systems
how might pests + disease affect food supply?
- HICs can combat this problem by using pesticides and insecticides on their crops
- pests bring diseases to farmer’s crops
strategies to increase food supply:
- irrigation
- aeroponics
- hydroponics
- the new green revolution
- use of biotechnology
- appropriate technology
- impossible burger
how does irrigation increase food supply?
HOW
- waters plants when there is now rain
- increase crop yield
DISADVANTAGES
- increases water logging
- very expensive to set up
how do aeroponics and hydroponics increase food supply?
HOW
- plants are grown in air or water
- can be provided with many more nutrients
- easily maintained
DISADVANTAGES
- every expensive
- have to higher workers selectively
