Evaluación de la capacidad de sorción de potasio y cobre en dos tipos de suelos quemados experimentalmente en laboratorio simulando incendios forestales

The present research aims to determine the physicochemical alterations produced when different soil samples are exposed to temperature conditions simulating low, medium and high intensity forest fires. In addition, it determines the alterations in the potassium and copper sorption capacity through Ion exchange capacity (CIC), in soil samples collected from Antisana Conservation Park (PCA) and Metropolitan Park Guangüiltagua de Quito (PMGQ). For the burning of the soils at the laboratory level, the methodology used by Cerdá and Jordán (2010) was adapted, changing some parameters to be taken into account for the simulation of forest fires. A preheated electric oven was used at 1000 ° C, where the samples were exposed to different periods of time, reaching average temperatures of 170, 309 and 647 ° C corresponding to low, medium and high intensity forest fires, respectively. The burned soils were analyzed to determine the alterations in the physicochemical parameters, evidencing an inverse correlation between the increase of temperature and the percentage of organic matter (OM); On the PCA soil the R2 obtained is 0.90 and in the PMGQ the R2 obtained corresponds to 0.74. The decrease in OM reveals a decrease in the sorption capacity represented by the CIC, in contrast to the previous one, an excellent correlation between the variation of OM and the CIC in the soil of the PCA with an R2 of 0.89 and an R2 corresponding to 0.95 in the PMGQ.

• Հիմնական հեղինակ: Toaquiza Guasumba, Diana Alexandra (author)
• Այլ հեղինակներ: Bastidas Altamirano, Edison Iván (author)
• Ձևաչափ: bachelorThesis
• Լեզու: spa
• Հրապարակվել է: 2017
• Խորագրեր: SUELOS - INVESTIGACIONES; SUELOS - ABSORCIÓN Y ADSORCIÓN; POTASIO; COBRE
• Առցանց հասանելիություն: http://dspace.ups.edu.ec/handle/123456789/14108