Costa Rica pioneered the use of the payments for environmental services (PES) approach in developing countries by establishing a formal, country-wide program of payments, the PSA program. The PSA program has worked hard to develop mechanisms to charge the users of environmental services for the services they receive.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/payments-environmental-services-costa-rica
[2] http://admin.indiaenvironmentportal.org.in/category/author/stefano-pagiola
[3] http://admin.indiaenvironmentportal.org.in/category/journal/ecological-economics
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/afforestation
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-sequestration
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biodiversity-conservation
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/benefit-sharing
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/costa-rica
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecosystem-services