health impacts of global environmental change

Question 1

what are the direct impacts of agricultural productivity change

Answer 1

• in mid latitudes, crop yields are expected to increase
• large gains in Russia due to longer plating season and favourable conditins
• farmers will have to adapt to the changes
• varying rain will affect the crops
• rising temperature increases evaporation which causes salinization and reduces yields

Question 2

what are the indirect impacts of agricultural productivity change

Answer 2

• pests and disease- increased temperatures reduce the mortality
• changes in water availability- water for irrigation is extracted from rivers for example agricultural around the Nile depends on rainfall
• sea level rise- in low lying land

Question 3

what is the change in nutritional standards like In developed nations

Answer 3

• increasing prices can lower nutritional value, changing production means new crops which may lead to different pesticides which can contaminate food
• promotion of healthy diets

Question 4

what is the change in nurtirional standards like in developing nations

Answer 4

• experiencing rapid economic growth will mean going through a nutritional transition, increasing affluence means a more western diet
• china has gone from eaten rice to meat

Question 5

what is the change in nutrional standards like in the least developed nations

Answer 5

• lots of plants need rain fed

- climate change leads to crop failure