Hydraulic conductivity of an Alnus acuminata and Coffea arabica agroforestry system in the municipality of Zipacón, Colombia.

• DOI: https://doi.org/10.22533/at.ed.317532524029

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• Abstract:

  The behavior of the hydraulic conductivity of an agroforestry system of Alder (Alnus glutinosa) and Coffee (Coffea arabiga) (SAF-AC) was studied, under the hypothesis that it is a behavior that favors the flow of sub-surface water, which can contribute to the flow of natural streams, or contribute to aquifers.
  The hydraulic conductivity of the SAF-AC was assessed using the borehole method and compared with that obtained with a coffee-only cover and with a managed pasture cover.
  The arrangement of the measuring devices was completely random, and the characteristic infiltration capacity curves of each vegetation cover considered were initially determined, and from there the characteristic hydraulic conductivity curves of each cover were determined.
  Finally, the differences in the behavior of the SAF-AC versus the Coffee and Pasture coverages were statistically established.
  The differences in the infiltration capacity and hydraulic conductivity of the three vegetation covers under study were not significant, but since the agroforestry covers, such as alder with coffee, are the most favorable in these processes, these can promote the recharge of aquifers and subsurface flows by facilitating the occurrence of gravitation water that contributes to groundwater, these can promote the recharge of aquifers and sub-surface flows by facilitating to a greater extent the occurrence of gravitational waters that contribute to groundwater, as they are implemented on a larger scale, offering a contribution to their eco-systemic function of regulating the waters of the hydrological cycle, in addition to the productive benefit of coffee, in this case.