Rainfall redistribution and nutrient input in Pinus cooperi C.E. Blanco
DOI:
https://doi.org/10.29298/rmcf.v9i50.237Keywords:
Nutrient input, nutrient deposition, macronutrients, micronutrients, Pinus cooperi C.E. Blanco, precipitationAbstract
Precipitation is one of the most important forms of nutrient input to forest ecosystems; it enters the soil through redistribution pathways: Gross rainfall (Pi), Throughfall (Pd) and Stemflow (Ef). 42 events were evaluated in which the volumes of rainfall were recorded, as well as chemical composition: pH, electric conductivity, macro and micronutrients (Ca, Na, Mg, K, Zn, Mn, Fe and Cu). The objective of the present investigation was to determine the total deposition, incorporation and extraction of nutrients through Pi, Pd and Ef, in addition to the precipitation/deposition relation, to determine the differences in nutrients concentration, a comparison test was applied among the routes already indicated, under a vegetation cover of Pinus cooperi. Ca recorded the highest deposition and incorporation, with 42.89 and 21.74 kg ha⁻¹ respectively. Cu showed the lowest input and accumulated 21.16 and 16.34 g ha⁻¹. The rest of the nutrients presented a behavior from highest to lowest for Pd: Ca> Na> K> Mg> Mn> Fe> Zn> Cu, Pi: Ca> Na> K> Mg> Mn> Zn> Fe> Cu and for Sf: Ca> K> Na>Mg>Mn>Fe>Zn>Cu. This behavior can be associated with the deposition of solid particles on foliage surfaces and branches, phenology, as well as morphological and physiological traits of the species, as well as rainfall chemistry and dry days between rainfall events.
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