author = "G{\"u}rtler, S. and Souza Filho, C. R. and Sanches, Ieda Del'Arco 
                         and Alves, M. N. and Oliveira, W. J.",
          affiliation = "{Universidade Estadual de Campinas (UNICAMP)} and {Universidade 
                         Estadual de Campinas (UNICAMP)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Estadual de Campinas 
                         (UNICAMP)} and {Petrob{'a}s}",
                title = "Determination of changes in leaf and canopy spectra of plants 
                         grown in soils contaminated with petroleum hydrocarbons",
              journal = "ISPRS Journal of Photogrammetry and Remote Sensing",
                 year = "2018",
               volume = "146",
                pages = "272--288",
                month = "Dec.",
             abstract = "Changes in vegetation near pipelines are symptomatic of petroleum 
                         hydrocarbon leakages, particularly diesel and gasoline, which are 
                         fuels regularly transported onshore. The investigation of such 
                         changes in leaf and canopy spectra of vegetation grown on 
                         contaminated soils is the goal of this work. A real scale 
                         experiment was installed in an area of 2000 m2. Two planting plots 
                         were firstly contaminated on a controlled style with diesel (6.25 
                         L/m3 soil) and gasoline (8.33 L/m3 soil). A third plot was used as 
                         a control and preserved with no contaminants. Subsequently, maize, 
                         brachiaria and perennial soybean were planted on all plots. 
                         Visible and infrared spectral measurements of leaf and canopy 
                         targets were taken, respectively, between 28184 days and 49203 
                         days after planting. The spectra of contaminated plants were 
                         compared to those of healthy plants. Significant differences were 
                         observed in the chlorophyll absorption feature and red edge 
                         position both at the canopy level. Narrowband spectral indices 
                         highlighted differences predominantly in plants affected by 
                         gasoline. The evident changes in the canopy spectra show that the 
                         hydrocarbons damaged the canopy structure extensively. The 
                         spectral patterns revealed here have important implications for 
                         detecting and monitoring areas likely contaminated with liquid HCs 
                         using hyperspectral remote sensing.",
                  doi = "10.1016/j.isprsjprs.2018.09.011",
                  url = "http://dx.doi.org/10.1016/j.isprsjprs.2018.09.011",
                 issn = "0924-2716",
             language = "en",
           targetfile = "gurtler_determination.pdf",
        urlaccessdate = "25 nov. 2020"