Green Revolution

Green Revolution started in the 1900 approximately.   1940 -1980

A healthy Biodiversity :

A healthy biodiversity provides a number of natural services for everyone:

  • Ecosystem services, such as
    • Protection of water resources
    • Soils formation and protection
    • Nutrient storage and recycling
    • Pollution breakdown and absorption
    • Contribution to climate stability
    • Maintenance of ecosystems
    • Recovery from unpredictable events
  • Biological resources, such as
    • Food
    • Medicinal resources and pharmaceutical drugs
    • Wood products
    • Ornamental plants
    • Breeding stocks, population reservoirs
    • Future resources
    • Diversity in genes, species and ecosystems
  • Social benefits, such as
    • Research, education and monitoring
    • Recreation and tourism
    • Cultural values

Impacts on food supply & nutrition – Green revolution:

  • Ecological impactsbiodiversity-matters-300x300
  • Loss of Biodiversity
  • Decline in Soil nutrition
  • Soil loss
  • High does of synthetic chemicals
  • improved food security; reduced malnutrition in developing nations.

Population size impacts:

  • Changes to food supply   food cultivation for increased population and environmental impacts.
  • Migration – population expansion beyond the food capacity – causing a dispersion of cultural ways of eating
    • Cultivation of crops in new locations
    • Food choice and diversity
  • Challenges – Food supply, Urbanisation.
  • War & conflict
    • Innovations – preservation techniques such as canning
      • Retort packages – us army
    • Food Insecurity
      • Loss of land
      • loss of knowledge
      • loss of skill
  • Loss of indigenous culture
    • Loss of land
    • Loss of knowledge
    • loss of skill
    • Introduction of foreign species
    • Loss of bush foods
    • Colonisation through food
    • Deforestation of new lands for grazing, grain production.Indigenous Aust

Ecological changes

Historically local subsistence crisis occurred whenever population size outstripped food supply – causing famine and starvation.

Biodiversity

(This blog was initially written for revision purposes. The information is sourced and adapted from my lecture notes in Environmental health, and Nutrition and Dietetics.)

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