Kategoriak: All - irrigation - pollution - chemicals

arabera Alfie Yang 12 years ago

305

Developments in Food Production

The text highlights various challenges and developments in modern food production, focusing on the consequences of using chemicals and irrigation techniques. Chemical usage can lead to water pollution and eutrophication, while irrigation often results in soil salinisation and waterlogging, particularly in arid and coastal regions.

Developments in Food Production

Developments in Food Production

Effectiveness

Addressing the Challenges
Future Challenges
Past Success

Irrigation

Waterlogging

Excessive use of water

India

Air and Nutrients affected

Wash excess salt

Over Irrigate

Salinisation

When? Where? How?

Arid Regions

Libya and India

Saltwater from Sea

Coastal Area

Syria and Kuwait

Groundwater pumped

Salinity Increases

Construction of Dams

Aswan High Dam in Egypt (River Nile)

Sediments and Minerals Trapped

Irrigate fields

Flood Irrigation

Continous Cycle

Evaporation

Salts are left behind

Accumulation of Salt lowers the quality of soil

Use of Chemicals

Negative Effects
Water Pollution
Eutrophication
Imbalance in Soil Nutrients

Salinisation of soil is the building up of salts within the soil.

Genetically Modified Food crops

Threats
Benefits