... authors and not necessarily reflect the views of the American Museum of Natural History or the National Science Foundation Payments for Ecosystem Services: An Introduction and Case Study on Lao PDR ... northern Lao PDR (ICEM 2003) These areas contain endemic and threatened species, ecosystems, and natural resources, provide stability and maintenance for land and water systems, and sustain national, ... five types of forest: protection, conservation, production, rehabilitation, and degraded Two of these land use classifications are especially important to NPAs in Lao PDR and national ecosystem services...