Dam　construction　and　fish　culture　can　change　the　biogeochemical　processes　in　river,　yet　their　impact　on　the　spectral　properties　of　particulate　organic　matter　(POM)　remains　to　be　studied.　This　was　investigated　in　a　reservoir-type　river　(Minjiang　river,　SE　China)　using　absorption　spectroscopy　and　fluorescence　excitation-emission　matrices-parallel　factor　analysis　(EEMs-PARAFAC).　Five　fluorescent　components　were　identified　from　POM　with　PARAFAC.　Four　components　C1–C4　were　affected　by　the　seasonal　variations　of　rainfall　and　runoff,　indicating　the　influences　of　hydrological　condition　and　terrestrial　inputs.　The　Chlorophyll　a　concentration　(Chl　a)　correlated　significantly　with　the　humic-like　C3　(p　300　and　C1–C4　were　lower　downstream　the　dam.　These　results　indicated　that　fish　farming　in　the　reservoir　probably　promoted　the　production　of　POM.　The　a300　and　C1　per　unit　mass　of　suspended　particulate　matter　(a300/TSM　and　C1/TSM)　correlated　significantly　with　the　median　particle　size　(p　©　2019　Elsevier　Ltd