ENVI1003 Lecture Notes - Lecture 1: Maritime Geography, South Asia, Water Scarcity

• School: University of Sydney
• Department: Environmental Science
• Course: ENVI1003
• Professor: Stephen Cattle

Document Summary

Lecture 1: predicted population in 2056 = 10 billion, population began to skyrocket in 1900, grown by 1. 5 billion since 1999, asian countries growing population density = increase pressure on food and environment. The water challenge: 2. 5% of earths water =freshwater , 1. 3% of that available for our use (less of that is accessible, competing demand for freshwater, agriculture accounts for 70% of freshwater withdrawals. Increasing population = more food needed: not much land left, growing competition for water. Envi (cid:1005)(cid:1004)(cid:1004)3 lecture notes: food production in face of climate change, must protect and sustain water, soil, biodiversity and landscape functions. Planetary boundaries: define a safe operating space for human societies to develop and thrive, cant exceed certain factors and behaviours as will decrease hospitableness of earth 9 which each represent an environmental system. I(cid:373)pro(cid:448)i(cid:374)g food a(cid:448)aila(cid:271)ility: (cid:858)(cid:272)losi(cid:374)g the yield gap(cid:859) this is observed yields divided by potential yield of same place which would drastically increase amount of food production.