people and coastal erosion

• human actions influence coastal recession- nile delta

  • northern egypt- home to 50% of countrys pop, densely populated
  • coastline underthreat from rising sea levels and erosion- lowlying areas facing salt water intrusion= difficult to farm delta as fetility of land decreasing- freshwater lakes too salty for irrigation
  • transportation of sediment along nile reduced since building of aswan dam in 1970
  • SO rising sea level and low levels of deposition= nile is retreating
• land with different uses has different economic values

  • agricultural land has lowest value, £23,000 per hectre
  • residential land higher value- land in south of perbeck,dorset, residential land purposes at £3.8 million per hectre so agricultural land less likely to be protected