<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0120-2812</journal-id>
<journal-title><![CDATA[Acta Agronómica]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Agron.]]></abbrev-journal-title>
<issn>0120-2812</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-28122019000200084</article-id>
<article-id pub-id-type="doi">10.15446/acag.v68n2.66291</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Pago por servicios ambientales hidrológicos y dinámica de la cobertura arbórea en la región Iztaccíhuatl-Popocatépetl, Puebla, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Payments for Hydrologic Environmental Services and forest cover dynamics in the Iztaccíhuatl-Popocatépetl region, Puebla]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora-Carvajal]]></surname>
<given-names><![CDATA[Manuel Jacobo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bustamante-González]]></surname>
<given-names><![CDATA[Angel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cajuste-Bontemps]]></surname>
<given-names><![CDATA[Lenom]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas-López]]></surname>
<given-names><![CDATA[Samuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz Bello]]></surname>
<given-names><![CDATA[Gustavo Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ramírez-Juárez]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Posgraduados  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma Metropolitana  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>68</volume>
<numero>2</numero>
<fpage>84</fpage>
<lpage>91</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-28122019000200084&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-28122019000200084&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-28122019000200084&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El pago por servicios ambientales hidrológicos es un instrumento de política ambiental aplicado en la mayoría de los países para promover la conservación de los ecosistemas, principalmente los forestales. En 2003, el gobierno de México, a través de la Comisión Nacional Forestal (CONAFOR), implementó el programa de Pago por Servicios Ambientales Hidrológicos (PSAH) para atender los problemas de agua y deforestación en el país. Un prerrequisito para que un área reciba el PSAH es que mantenga una cobertura vegetal mínima de 80%, o la aumente, durante los 5 años posteriores al inicio del contrato. Las evaluaciones de los impactos del Programa sobre la cobertura forestal consisten principalmente en estudios nacionales o regionales. En México no se tienen evaluaciones de los impactos a nivel comunitario, escala a la que el PSAH es ejecutado. En el presente estudio se evaluó el impacto del programa de PSAH en la dinámica de la cobertura arbórea en seis ejidos de la región Iztaccíhuatl-Popocatépetl, Puebla. Para realizar el estudio se utilizaron imágenes Quickbird y se realizó una clasificación supervisada. Los resultados indicaron que el Programa PSAH cumplió con su objetivo en cuatro de los seis núcleos agrarios analizados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Payment for hydrologic environmental services is an instrument of environmental policy applied in most countries to promote conservation of ecosystems, especially forest ecosystems. In 2003, the Mexican government through the National Forestry Commission (CONAFOR) implemented the Payment for Hydrological Environmental Services (PHES) to address the problems of water and deforestation in the country. A prerequisite for an area to receive the PHES is to maintain a minimum 80% forest cover, or increase it during the five-year contract. PHES program Assessments on forest cover have been mainly national or regional scale studies. In Mexico there is not impact assessment at community level scale at which the PHES is executed. This study assesses the impact of PHES on the forest cover dynamics in six ejidos of the Iztaccíhuatl-Popocatépetl region, Puebla. To perform the study, two Quickbird images were used and a supervised classification was performed. The results indicate that the PHES achieved its goal in four of the six ejidos.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[servicios hidrológicos]]></kwd>
<kwd lng="es"><![CDATA[servicio ambiental]]></kwd>
<kwd lng="es"><![CDATA[Puebla]]></kwd>
<kwd lng="es"><![CDATA[México]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arenas]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Haeger]]></surname>
<given-names><![CDATA[J. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Jordano]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Aplicación de técnicas de teledetección y GIS sobre imágenes Quickbird para identificar y mapear individuos de peral silvestre (Pyrus bourgeana) en bosque esclerófilo mediterráneo]]></article-title>
<source><![CDATA[Rev. Teledet]]></source>
<year>2011</year>
<volume>35</volume>
<page-range>55-71</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Arriagada]]></surname>
<given-names><![CDATA[R.A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ferraro]]></surname>
<given-names><![CDATA[P.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sills]]></surname>
<given-names><![CDATA[E.O.]]></given-names>
</name>
<name>
<surname><![CDATA[Pattanayak]]></surname>
<given-names><![CDATA[S.K.]]></given-names>
</name>
<name>
<surname><![CDATA[Cordero-Sancho]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Do payments for environmental services affect forest cover? A farm-level evaluation from Costa Rica]]></article-title>
<source><![CDATA[Land Econ]]></source>
<year>2012</year>
<volume>88</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>382-99</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Borner]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Baylis]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Corbera]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Ezzine-De-Blas]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Honey-Rosés]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Persson]]></surname>
<given-names><![CDATA[U.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Wunder]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The effectiveness of payments for environmental services]]></article-title>
<source><![CDATA[World Devel]]></source>
<year>2017</year>
<volume>96</volume>
<page-range>359-74</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="">
<collab>CONAFOR (Comisión Nacional Forestal)</collab>
<source><![CDATA[Servicios ambientales y cambio climático]]></source>
<year>2011</year>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Congalton]]></surname>
<given-names><![CDATA[R. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Green]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<source><![CDATA[Assessing the accuracy of remotely sensed data: principles and practices]]></source>
<year>2008</year>
<publisher-loc><![CDATA[USA ]]></publisher-loc>
<publisher-name><![CDATA[CRC press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Constanza]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Social goals and the valuation of ecosystem services]]></article-title>
<source><![CDATA[Ecosystems]]></source>
<year>2000</year>
<volume>3</volume>
<page-range>4-10</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Churches]]></surname>
<given-names><![CDATA[C. E.]]></given-names>
</name>
<name>
<surname><![CDATA[Wampler]]></surname>
<given-names><![CDATA[P. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Sun]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Smith]]></surname>
<given-names><![CDATA[A. J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluation of forest cover estimates for Haiti using supervised classification of Landsat data]]></article-title>
<source><![CDATA[International. J. Applied Earth Observ. Geoinf]]></source>
<year>2014</year>
<volume>30</volume>
<page-range>203-16</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Foody]]></surname>
<given-names><![CDATA[G. M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Status of land cover classification accuracy assessment]]></article-title>
<source><![CDATA[Remote Sensing of Environment]]></source>
<year>2002</year>
<volume>80</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>185-201</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[García-Amado]]></surname>
<given-names><![CDATA[L. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Pérez]]></surname>
<given-names><![CDATA[M. R.]]></given-names>
</name>
<name>
<surname><![CDATA[Escutia]]></surname>
<given-names><![CDATA[F. R.]]></given-names>
</name>
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[S. B.]]></given-names>
</name>
<name>
<surname><![CDATA[Mejía]]></surname>
<given-names><![CDATA[E. C]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efficiency of Payments for Environmental Services: Equity and additionality in a case study from a Biosphere Reserve in Chiapas, Mexico]]></article-title>
<source><![CDATA[Ecol. Econ]]></source>
<year>2011</year>
<volume>70</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>2361-8</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Huete]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Didan]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Miura]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[E. P.]]></given-names>
</name>
<name>
<surname><![CDATA[Gao]]></surname>
<given-names><![CDATA[X.]]></given-names>
</name>
<name>
<surname><![CDATA[Ferreira]]></surname>
<given-names><![CDATA[L. G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Overview of the radiometric and biophysical performance of the MODIS vegetation indices]]></article-title>
<source><![CDATA[Remote Sensing of Environment]]></source>
<year>2002</year>
<volume>83</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>195-213</page-range></nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[La Notte]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[DÁmato]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Makine]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Paracchini]]></surname>
<given-names><![CDATA[M.L.]]></given-names>
</name>
<name>
<surname><![CDATA[Liquete]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Egoh]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Geneletti]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Crossman]]></surname>
<given-names><![CDATA[N.D]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ecosystem services classification: A systems ecology perspective of the cascade framework]]></article-title>
<source><![CDATA[Ecol. Indic]]></source>
<year>2017</year>
<volume>74</volume>
<page-range>393-402</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Z.]]></given-names>
</name>
<name>
<surname><![CDATA[Kontoleon]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Meta-Analysis of livelihood impacts of payments for environmental services programmes in developing countries]]></article-title>
<source><![CDATA[Ecol. Econ]]></source>
<year>2018</year>
<volume>149</volume>
<page-range>48-61</page-range></nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[McCoy]]></surname>
<given-names><![CDATA[R. M]]></given-names>
</name>
</person-group>
<source><![CDATA[Field Methods in Remote Sensing]]></source>
<year>2005</year>
<publisher-loc><![CDATA[New York, USA ]]></publisher-loc>
<publisher-name><![CDATA[Guilford Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="book">
<collab>Millennium Ecosystem Assessment</collab>
<source><![CDATA[Ecosystems and human well-being: synthesis]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Washington, DC ]]></publisher-loc>
<publisher-name><![CDATA[Island Press]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Muñoz-Piña]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Guevara]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Torres]]></surname>
<given-names><![CDATA[J. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Braña]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Paying for the hydrological services of Mexico&#8217;s forests: Analysis, negotiations and results]]></article-title>
<source><![CDATA[Ecol. Econ]]></source>
<year>2008</year>
<volume>65</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>725-36</page-range></nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Muñoz-Piña]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Rivera]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Cisneros]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[García]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Retos de la focalización del Programa de Pago por los Servicios Ambientales en México]]></article-title>
<source><![CDATA[Rev. Esp. Est. Agrosoc. Pesq]]></source>
<year>2011</year>
<volume>228</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>87-113</page-range></nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Olofsson]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Foody]]></surname>
<given-names><![CDATA[G. M.]]></given-names>
</name>
<name>
<surname><![CDATA[Stehman]]></surname>
<given-names><![CDATA[S. V.]]></given-names>
</name>
<name>
<surname><![CDATA[Woodcock]]></surname>
<given-names><![CDATA[C. E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Making better use of accuracy data in land change studies: Estimating accuracy and area and quantifying uncertainty using stratified estimation]]></article-title>
<source><![CDATA[Rem. Sens. Environ]]></source>
<year>2013</year>
<volume>129</volume>
<page-range>122-31</page-range></nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ortiz Malavasi]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Sage Mora]]></surname>
<given-names><![CDATA[L. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Borge Carvajal]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
</person-group>
<source><![CDATA[Impacto del Programa de Pago de Servicios Ambientales en Costa Rica como medio de reducción de la pobreza en los medios rurales]]></source>
<year>2003</year>
<publisher-loc><![CDATA[San José, Costa Rica ]]></publisher-loc>
<publisher-name><![CDATA[Unidad Regional de Asistencia Técnica]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Otukei]]></surname>
<given-names><![CDATA[J.R.]]></given-names>
</name>
<name>
<surname><![CDATA[Blaschke]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Land cover change assessment using decision trees, support vector machines and maximum likelihood classification algorithms]]></article-title>
<source><![CDATA[Intern. J. Appl. Earth Observ. Geoinf]]></source>
<year>2010</year>
<volume>12</volume>
<page-range>27-31</page-range></nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pfaff]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Robalino]]></surname>
<given-names><![CDATA[J. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sanchez-Azofeifa]]></surname>
<given-names><![CDATA[G. A]]></given-names>
</name>
</person-group>
<source><![CDATA[Payments for environmental services: empirical analysis for Costa Rica]]></source>
<year>2008</year>
<publisher-loc><![CDATA[Durham, USA ]]></publisher-loc>
<publisher-name><![CDATA[Terry Sanford Institute of Public Policy, Duke University]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Reyes]]></surname>
<given-names><![CDATA[D.G.J.]]></given-names>
</name>
<name>
<surname><![CDATA[Mas]]></surname>
<given-names><![CDATA[J.M.]]></given-names>
</name>
<name>
<surname><![CDATA[Velázquez]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Trends of tropical deforestation in Southeast Mexico]]></article-title>
<source><![CDATA[Singapore J. Trop. Geogr]]></source>
<year>2010</year>
<volume>31</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>180-96</page-range></nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Robalino]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Pfaff]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Sanchez-Azofefia]]></surname>
<given-names><![CDATA[G. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Alpízar]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[León]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Rodríguez]]></surname>
<given-names><![CDATA[C. M]]></given-names>
</name>
</person-group>
<source><![CDATA[Deforestation impacts of environmental services payments: Costa Rica&#8217;s PSA program 2000-2005]]></source>
<year>2008</year>
<publisher-name><![CDATA[Environment for Development]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Scullion]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Thomas]]></surname>
<given-names><![CDATA[C. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Vogt]]></surname>
<given-names><![CDATA[K. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Perez-Maqueo]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<name>
<surname><![CDATA[Logsdon]]></surname>
<given-names><![CDATA[M. G]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Evaluating the environmental impact of payments for ecosystem services in Coatepec (Mexico) using remote sensing and on-site interviews]]></article-title>
<source><![CDATA[Environ. Conserv]]></source>
<year>2011</year>
<volume>38</volume>
<numero>04</numero>
<issue>04</issue>
<page-range>426-34</page-range></nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="book">
<collab>SEMARNAT</collab>
<source><![CDATA[Informe de la Situación del Medio Ambiente en México. Compendio de Estadísticas Ambientales. Indicadores Clave y de Desempeño Ambiental]]></source>
<year>2012</year>
<publisher-loc><![CDATA[México, D.F ]]></publisher-loc>
<publisher-name><![CDATA[Secretaría de Medio Ambiente y Recursos Naturales]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sierra]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Russman]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[On the efficiency of environmental service payments: a forest conservation assessment in the Osa Peninsula, Costa Rica]]></article-title>
<source><![CDATA[Ecol. Econ]]></source>
<year>2006</year>
<volume>59</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>131-41</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sills]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Arriagada]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Ferraro]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Pattanayak]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Carrasco]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ortiz]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Cordero]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Caldwell]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Andam]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impact of the PSA Program on Land Use]]></article-title>
<person-group person-group-type="editor">
<name>
<surname><![CDATA[Platais]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Pagiola]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<source><![CDATA[Ecomarkets: Costa Rica&#8217;s Experience with Payments for Environmental Services]]></source>
<year>2008</year>
<page-range>1-22</page-range><publisher-loc><![CDATA[Washington, DC ]]></publisher-loc>
<publisher-name><![CDATA[The World Bank]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Small]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Munday]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Durance]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The challenge of valuing ecosystem services that have no material benefits]]></article-title>
<source><![CDATA[Global Environmental Change]]></source>
<year>2017</year>
<volume>44</volume>
<page-range>57-67</page-range></nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Zbinden]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Lee]]></surname>
<given-names><![CDATA[D. R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Paying for environmental services: an analysis of participation in Costa Rica&#8217;s PSA program]]></article-title>
<source><![CDATA[World Develop.]]></source>
<year>2005</year>
<volume>33</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>255-72</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
