Escoamento Da Água Da Chuva Pelo Tronco Das Árvores Em Uma Floresta Estacional Semidecidual

Lorenzon, Alexandre Simões; Dias, Herly Carlos Teixeira; Tonello, Kelly Cristina

doi:10.1590/0100-67622015000300002

Cited by 11 publications

(7 citation statements)

References 9 publications

(6 reference statements)

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“…The PCA proves this, where slope and surface roughness were explanatory variables and reduced runoff (Fang et al, 2015; Pires et al, 2006). Vegetation cover is among the important variables for explaining runoff reduction in the rehabilitation stage, which may be due to its interception of rainwater, impeding the water kinetic energy from reaching the ground and thus reducing runoff (Bessi, Dias, & Tonello, 2018; Freitas, Dias, Silva, & Tonello, 2016; Lorenzon, Dias, & Tonello, 2015). The explanation of the components for the variables SD, R, SPD, MSPR, D, Slope, ma, TP, and VC shows that these are the factors with higher importance during the rehabilitation stage of the mines for reducing runoff.…”

Section: Discussionmentioning

confidence: 99%

Surface runoff from an area undergoing soil rehabilitation after bauxite mining in southeastern Brazil

et al. 2021

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Changing hydrological processes and soil characteristics are of major environmental concern in surface mining. Runoff may be the best factor for determining the efficiency of rehabilitation after this type of mining, and needs more in-depth studies, but the environmental factors require more attention in order to control that runoff.The objective of this study was to compare the runoff during post-mining rehabilitation after the extraction of bauxite with that before mining, and to identify the factors that most affect it. Runoff from before the mining operations and during the rehabilitation after those operations were collected in seven plots in the area of a bauxite mine in southeastern Minas Gerais State, Brazil. The physical-environmental and anthropic factors interfering with the runoff were characterized for both periods, and their results were submitted to principal component analysis to define the parameters, which most demand attention in the mining rehabilitation stage. This study provides the first records of runoff in the field in areas rehabilitated after surface mining in Brazil, where the runoff decreased (1.75-times or 42.79%) from 0.76 to 0.30% of the precipitation during rehabilitation, compared to the reference area.The total porosity, density, and resistance of the soil, associated with the maintenance of slope, surface roughness, and vegetation cover, are the factors demanding more attention during the rehabilitation stage of surface mining in order to minimize runoff.

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Section: Discussionmentioning

confidence: 99%

Surface runoff from an area undergoing soil rehabilitation after bauxite mining in southeastern Brazil

et al. 2021

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“…of palm trees in the former, which may facilitate rainwater catchment and its subsequent drainage through stem surfaces (Togashi et al, 2012;Lorenzon et al, 2015;Corrêa et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Rainfall Partitioning in Fragments of Cerrado Vegetation at Different Stages of Conduction of Natural Regeneration

Bessi

Dias

Tonello³

2018

Rev. Árvore

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In order to contribute to the discussion on how forest development interacts with hydrological processes related to rainfall partitioning, we aimed to characterize the rainfall interception (RI), throughfall (Tf), stemflow (Sf), and net precipitation (NP) in three Cerrado areas at different stages of natural regeneration conduction: treatment 1 = area with 4 years without human intervention; treatment 2 = 10 years; and treatment 3 = 43 years. In all areas, three 400-m2 plots were established, in each of which 12 rain gauges and stemflow collectors were installed on all trees having Diameter at Breast High (DBH) > 5 cm. Data was recorded from December 2015 through November 2016. At treatment 1, Tf corresponded to 100% of gross precipitation (GP) in the micro-basin, while Sf corresponded to 0.01%, RI to 0%, and NP to 100% of GP. At treatment 2, Tf corresponded to 96% of GP, whereas Sf corresponded to 0.19%, RI to 4%, and NP to 96% of GP. At treatment 3, Tf corresponded to 87% of GP, while Sf corresponded to 1.15%, RI to 12%, and NP to 88%. The results revealed significant differences among the study areas. Both RI and Sf increased with advancing natural regeneration, while Tf and NP decreased. Data varied according to vegetation features, like the number and density of individuals and species in each plot, and according to characteristics related to weather and precipitation in the area.

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“…However, in the month of July 2019, rains exceeded historical averages (Figure 2), causing some containers to overflow. According to Lorenzon et al (2015), when the containers overflow, an underestimation of the SF capacity of the species may occur, suggesting that this water intake may be much greater. However, as the study had monitored three individuals per species in each period, the container where the overflowing occurred was eliminated.…”

Section: Stemflow and Effective Precipitationmentioning

confidence: 99%

Stemflow Nutrient Input in Trees in a Tropical Forest in Pernambuco, Brazil

Morais

Freire

Lima

et al. 2021

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Rainfall is the main source of water in forest ecosystems and stemflow is an important pathway for nutrients to enter these ecosystems. Thus, this study aimed to evaluate effective precipitation in a fragment of tropical forest and stemflow nutrient input of tree species in different periods of rainfall. Total precipitation and throughfall were measured using rain gauges inside and at the edge of the fragment. After a phytosociological survey, nine species with the highest absolute density in the fragment were chosen and three individuals were selected. Water collectors were fixed around their trunk to collect stemflow water. The stemflow water was measured in milliliters, and pH, electrical conductivity and the input of K, P and Na were determined. Based on the throughfall and stemflow, the effective precipitation was calculated. The stemflow nutrient input presented the following decreasing order: Na>K>P. The high input of Na can be explained by the fact that the fragment is close to the coastal area. Stemflow of forest species proved to be an important pathway for nutrients to enter forest ecosystems, effectively participating in nutrient cycling.

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Escoamento Da Água Da Chuva Pelo Tronco Das Árvores Em Uma Floresta Estacional Semidecidual

Cited by 11 publications

References 9 publications

Surface runoff from an area undergoing soil rehabilitation after bauxite mining in southeastern Brazil

Surface runoff from an area undergoing soil rehabilitation after bauxite mining in southeastern Brazil

Rainfall Partitioning in Fragments of Cerrado Vegetation at Different Stages of Conduction of Natural Regeneration

Stemflow Nutrient Input in Trees in a Tropical Forest in Pernambuco, Brazil

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