@InProceedings{GielowFoCaAlSaSa:2002:ChCoSo,
               author = "Gielow, R. and Forti, Maria Cristina and Carvalho Jr., J. A. and 
                         Alvarado, E. and Sandberg, D. V. and Santos, J. C.",
          affiliation = "{INPE - Instituto Nacional de Pesquisas Espaciais} and {INPE - 
                         Instituto Nacional de Pesquisas Espaciais} and FEG/UNESP, 
                         Guaratinguet{\'a}, SP and U.W., Seattle, WA and {USDA Forest 
                         Service} and {INPE - Instituto Nacional de Pesquisas Espaciais}",
                title = "Chemical composition of the soilwater in the subsurface after the 
                         slashing and burning of two {"}Terra Firme{"} forest parcels in 
                         northern Mato Grosso",
                 year = "2002",
         organization = "LBA Scientific Conference, 2.",
             keywords = "soilwater, forest, Terra Firme.",
             abstract = "Changes in the chemical composition, with depth and time, of the 
                         soil water solution that results from rainfall and that percolates 
                         through the unsaturated zone, are studied after the slashing and 
                         burning of two {"}Terra Firme{"} Amazonian forest parcels located 
                         (9o57'42.20{"}S, 56o20'52.05{"}W) near Alta Floresta, MT. The 
                         samples were collected with zero tension lisymeters installed in 
                         the following parcels: (i)pristine forest, (ii)forest with the 
                         litter accidentally burned, (iii)and (iv)slashed and burned 
                         forest, in 1999 and 2001, respectively. The concentrations of Na+, 
                         K+, Mg2+, Ca2+, NH4 +, Cl-, NO3 -, SO4 2-, Fe2+, Mn2+, Cu2+, Zn2+ 
                         and Al3+ in the soil solution were determined. The major cations 
                         and anions presented a concentration decrease with time, after 
                         initial peaks caused by the burning, while for most metals a 
                         mobilization was observed. Also, unbalances which decrease with 
                         time were evidenced by the electronegativities determined. The 
                         pulses introduced in the soil solution composition lasted about 
                         two months for each major ion, and react with the soil system.",
  conference-location = "Manaus",
      conference-year = "7 -1 0 July",
           copyholder = "SID/SCD",
                label = "10268",
             language = "en",
           targetfile = "gielow_chemical.pdf",
        urlaccessdate = "04 maio 2024"
}