@article{fdi:010083818, title = {{L}and use dynamics under the {B}olsa {F}loresta {P}rogram : a case study of the {U}atuma {S}ustainable {D}evelopment {R}eserve ({A}mazonas, {B}razil)}, author = {{S}ilva, {R}. and {L}aques, {A}nne-{E}lisabeth and {C}abral, {A}. {I}. {R}. and {S}ilva, {S}. {C}. and {P}ereira, {H}. and {S}aito, {C}.}, editor = {}, language = {{ENG}}, abstract = {{T}he effectiveness of a program of payment for environmental services ({PES}) in the {B}razilian {A}mazon was analyzed through an accurate mapping of deforested areas. {T}he {B}olsa {F}loresta {P}rogram ({BFP}) in {A}mazonas state ({B}razil) was chosen as an example of a {PES} program that aims to compensate farmers for their commitment to zero deforestation of primary forests while opening swiddens only in secondary vegetation areas. {H}owever, the official measurement of opened swiddens is not effective since only deforested areas larger than 6.25 ha are mapped, whereas most areas opened for cassava crops are approximately 1 ha in size. {T}he effectiveness of the {BFP} was evaluated in the {U}atuma {S}ustainable {D}evelopment {R}eserve ({SDR}). {W}e tested a methodology for mapping areas from 0.45 ha upwards that have been opened for cassava swiddens. {T}he years 2006 (before the implementation of the {BFP}), 2011, 2015 and 2019 were analyzed. {T}he results indicated that 88% of the areas opened for swiddens were between 0.45 and 6.25 ha in size. {A}fter the implantation of the {BFP}, the cumulative total deforested area decreased, and there was a reduction in deforested areas in primary forests. {A}n intensification of swidden cultivation was also observed, which could cause a decline in productivity. {T}he monitoring by land-use zoning showed that the majority of opened areas were located in intensive use zones, following the rules of the {SDR} management plan. {T}he results show the efforts of local families to fulfill the {BFP} rules.}, keywords = {swidden ; cassava ; {PES}, deforestation ; land use zoning ; environmental services ; {BRESIL} ; {AMAZONAS}}, booktitle = {}, journal = {{A}cta {A}mazonica}, volume = {51}, numero = {4}, pages = {370--381}, ISSN = {0044-5967}, year = {2021}, DOI = {10.1590/1809-4392202100281}, URL = {https://www.documentation.ird.fr/hor/fdi:010083818}, }