Global Resource Consumption and Security ch2 Flashcards
Impacts of Changing Trends in Resource Consumption
what is water-food-energy nexus
Refers to the links between water food and energy and the ways each one has an impact on the others; Water-food-nexus describes how three are interconnected. Water, food, and energy security are all related to each other and developments in one sector may affect two other
examples of interactions
Water used for mining and transport of energy sources; Food production may affect water supply through water extraction and energy is required for the extraction, transport, and distribution of water; Energy is needed to harvest crops and make foods
what does the nexus offer?
Nexus offers possibilities for circular economy, by turning waste outputs from food production into useful inputs to energy generation
what’s the relationship between the nexus and climate change
Climate change can reduce agricultural productivity in some areas and increase it in others, diminish water supplies or increase them
Increase frequency of climate-related shocks and will have an impact on food, water, and energy supplies
Higher temperatures and evaporation rates will reduce water supplies and increase need for more water
Results in more energy needed to get more water
using nexus to adapt to climate change
Increasing renewable energy and bioenergy
Switching to drought tolerant crops
Desalinization
Case study food, water, and energy security in South Asia
Case study: improving food security in South Africa
food security
availability and access to sufficient, safe, and nutritious food to meet the dietary needs and food preferences for an active and healthy life
energy security
refers to having access to clean reliable and affordable energy sources for uses
water security
access to safe drinking water and sanitation
Energy from waste or waste to energy
Trying to produce energy from waste, producing methane can generate electricity but is not environmental friendly
