02700naa a2200313 a 450000100080000000500110000800800410001902400550006010000110011524501530012626000090027952017410028865000180202965000150204765000170206265300260207965300230210565300260212865300340215465300210218865300160220965300200222570000110224570000140225670000170227070000170228770000190230477300630232321182872020-02-04       2019    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1080/15481603.2018.14974382DOI1 aLI, G.  aExamining deforestation and agropasture dynamics along the Brazilian TransAmazon Highway using multitemporal Landsat imagery.h[electronic resource]  c2019  aThis research aims to understand the difference of major land-cover change results caused in various time periods and to examine the impacts of human-induced factors on land-cover changes along the TransAmazon Highway region. The Landsat Thematic Mapper and Operational Land Imager data from 2011, 2014, and 2017 and our previous land-cover classification results in 1991, 2000, and 2008 were used to examine land-cover dynamics. A classification system consisting of five land-cover classes ? primary forest (PF), secondary forest (SF), agropasture (AP), urban area, and water ? were chosen. The hierarchical-based classification method was used to generate land-cover classification results, and the post-classification comparison approach was used to produce detailed ?from-to? conversions for each detection period. The emphasis was on deforestation of PF, dynamic change of SF and AP, and urbanization over time. The impacts of human-induced factors such as population and economic conditions on urban expansion, AP expansion, and deforestation were examined. This research indicated that selection of a suitable time period was critical for effectively detecting land-cover changes; that is, too long time period (i.e., 9 years) cannot accurately capture some land-cover changes such as the AP and SF in this research. Although deforestation ? the conversion from PF to SF and AP ? accounted for a large proportion of land-cover changes, the changes between SF and AP became moreproportion important than PF conversion, and required a short time period (i.e., 3 years here) for effectively reflecting their dynamics. Human-induced factors play important roles in deforestation, dynamic changes between AP and SF, and urbanization.  aDeforestation  aLand cover  aDesmatamento  aAgropasture expansion  aCobertura da terra  aHuman-induced factors  aMultitemporal Landsat imagery  aSecondary forest  aTransAmazon  aTransamazônica1 aLU, D.1 aMORAN, E.1 aCALVI, M. F.1 aDUTRA, L. V.1 aBATISTELLA, M.  tGIScience & Remote Sensinggv. 56, n. 2, p. 161-183, 2019.