objects/ecosystem-restoration-for-water.html

banner

Ecosystem Restoration to Supply Water

Date = February 7, 2014
Tags <ESM102>

Healthy, forested watersheds deliver more water as an ecosystem service

  • leaves intercept the rain
  • plants cover the bare soil
  • surface humus and plant material act as a sponge
  • roots break up the soil and sub-strata to allow water to percolate
  • loss of plants results in a positive feedback for loss of ecosystem water

 

Restoring deforested or damaged watersheds can produce water

The Nature Conservancy model

NY Times article on Niger

Wangari Mathai - video (extras/Green Belt Movement/environmental conservation)

Greenbelt - short video

 

Other examples:

rainwater harvesting in India

  • traditional methods of retaining water in small catch dams johads that provide water for stock and also recharge groundwater
  • in 1940's government policies encouraged logging
  • loss of trees meant more erosion and loss of johads
  • viscious cycle - from a negative tipping point
  • trying to correct this by revegetating stream channels and building johads
  • opposite of a tragedy of the commons because:
    • good immediately for those who build it (stock watering)
    • builds a community resource (well water) over longer time and larger spaces

Water for People - link broken

Green Empowerment in San Jose de Bocay, Nicaragua

  • combination project
  • microhydro - renewable energy with some excess capacity
    • allows for enterprise use of power
  • community development lead to
    • protect and reforest the watershed
      • clean drinking water
      • constant source for micro-hydro
    • sustainable farming techniques
    • biomass rice drier
    • agro-forestry training center

Watershed protection

in Nicaragua - Cerro San Geronimo
general watershed protection guide

my courses - Spring 2015 tour or water and energy development in Nicaragua

 

Rio Calico, Nicaragua

Mitigating climate change through reforestation

  • land use changes may improve land use and quality of the resource
    • more reliable water
    • better food security through variety of crops
  • maybe able to tap carbon offsets or credits to pay for reforestation projects