Soil degradation & loss of arable land

GEO 4 chapter on Land -http://www.unep.org/geo/geo4/report/03_Land.pdf

Desertification

  1. http://desertification.wordpress.com/
  2. http://www.globaleducation.edna.edu.au/globaled/go/pid/2006
  3. WordPress blog

Salination

  1. http://en.wikipedia.org/wiki/Salinization

Loss of soil fertility

  1. WWF link
  2. http://soilerosion.net/
  3. Soil Degradation in the United States – Google books
  4. Soil erosion in England & Wales
  5. UK soil degredation
  6. http://news.bbc.co.uk/2/hi/science/nature/4860694.stm
  7. http://www.academicjournals.org/AJAR/PDF/Pdf2007/Jul/Osuji%20and%20Nwoye.pdf
  8. Paradise lost by Jeremy Burchardt on Google Books
  9. Book review of An Agricultural Testament – Sir Albert Howard