Unit 3 - AOS 2 - Ecological Sustainable Development Flashcards
ESD definition
“Development that meets the needs of the resent without compromising future generation’s needs”.
-> Requires the nature of production and consumption, while it continues to satisfy human needs while producing less waste and using less materials.
Sustainable development definition
“Process to achieve sustainability”
Considerations when aiming for sustainability
- Resources
- Natural systems
- Society
- Economy
- Culture
Zones of sustainability
Economy (Profit & cost saving, Growth & development)
Socio-economic (Ethical business, workers rights, fair trade)
Society (Living standards, education & opportunity, equal rights)
Socio-environmental (Enviro sustainability, care with resources, local & global considerations)
Environment (Renewable resources, pollution prevention)
Environmental-economic (Energy efficiency, incentives to use renewable resources. )
Sustainability definition
“Ability/capacity of something to sustain itself”
Name the 4 Challenges to sustainability principles
- Human pop growth
- Food
- Water
- Energy
Effects of ^ in human pop
- increased demands on environment to support us
- Projections = world pop = 8-12 billion by 2050
- Developing countries = africa, latin america etc.
- ## ^ in human pop challange of acheiving sustainability
Increase human pop in terms of pop stabilization and fertility rates.
POPULATION STABILIZATION:
- Human pop growth is slower than expected
- But still expected to increase substantially before stabilizing
FERTILITY RATES:
- Human fertility is low (continue to decline)
- Life expectancy is however increasing.
Notes on food as a challenge to sustainability principles
- Only so much is habitable land we can farm
- Agriculture - cause 86% of species to be threatened by extinction
GREEN REVOLUTION:
- Brought upon from development of ^ yeild crop varieties & fertilisers, pesticides & water.
- Since 1950s, most ^ in global food production come from ^ yeilds per capita of cropland.
CEREL CROP PRODUCTION:
- 2nd green revolution = due to fast growing & ^ yielding varieties of rice, corn & wheat (specially bred for tropical & subtropical climates)
Water
- We need clean fresh water for survival = ^ need for construction to store & supply
- ~64% worlds wetlands disappeared since 1990
Fresh water access and resources
- RARE TO ACCESS (unbalanced in distribution, some areas = continually wet/not seen permanent water in centuries)
RESOURCES:
- 71% earths surface = water (97% seawater & 3% freshwater)
use of fresh water
- Industrial water use ^, along with human pop (almost all commercial goods’ processing need water)
- Large savings could be made if efficiency of water use ^
- Treatment of waste water = major issue
Potable Water
= Water suitable to drink = rare commodity in lots of parts of the world
ACCESS TOPOTABLE WATER LIMITED BY:
- Availabilities
- ease of distribution
- Level of water treatment
(countries must deal with removing water born diseases & dissolved toxins -> once treated, distribution & storage is important) -> this is impossible in many countries
Water use in industry
- Global rates of WATER WITHDRAWEL (surface & groundwater sources) projected to be more than DOOUBLE in next 2 decades) –> due to ^ pop growth & economic development.
- Manufacturing & production processes = water intensive
- Virtual Water usage : “water is used but not in final product”
Environmental factors of water
- Sources = rivers, lakes, aquifers
- IRRIGATION & DIVERSIONS for drinking water displaces vast amounts of the water or these resource stores
- DAMMING rivers for electricity affects water flow downstream (dramatic effects on enviro & wildlife)