Temporal variation of soil CO2 emission in different land uses in the Caatinga

Lourenço, Elloise Rackel Costa; Souza, Bartolomeu Israrel de; D'Andrea, Alexandre Fonseca; Souza, José João Lelis Leal de

doi:10.1016/j.apgeog.2022.102661

Cited by 8 publications

(3 citation statements)

References 41 publications

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“…Loss of OC and N by erosion affects the ability of the soil to sustain life through reduced porosity, fertility and water retention (Ferreira et al, 2018; Lourenço et al, 2022; Silva & Mendonça, 2007). Furthermore, C and N are primary macronutrients derived mainly from soil organic matter decomposition (Ostrowska & Porębska, 2015; Six et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Preliminary experimental data on surface runoff and soil loss in the Caatinga

Neto

Xavier

Souza

et al. 2023

Earth Surf Processes Landf

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Semi-arid regions are naturally sensitive to soil erosion due to sparse vegetation cover and concentrated rainfall regime. Absence of conservative practices increases soil loss and reduces water retention. Despite the propagation of erosive process in the Brazilian semi-arid region, few studies address the spatial and temporal distribution of surface erosive processes. Therefore, the present study presents preliminary results of a monitored soil loss and runoff experiment in the Brazilian semi-arid region. Four plots were set up on the dominant soil groups, Luvisols and Regosols, traditional land uses, fallow system and cactus palm cultivation. Precipitation, surface runoff and soil loss were monitored for 22 months. The plots with the fallow system were more efficient in containing the hydro-erosive dynamics than the plots with the cactus palm. The high difference in soil erosion between fallow system plots and cactus palm indicates that the human impact on soil loss is substantial. The significant correlation between precipitation and surface runoff allows the prediction of surface runoff. The weak correlation between precipitation and soil loss indicates that erosion is complex, with a strong influence on soil properties and use. The propagation of erosive processes in the Brazilian semiarid region induces loss of soil fertility, acceleration of the desertification process and impoverishment of rural communities. Specific conservative practices should be developed to reduce soil loss and mitigate anthropic disturbance in these areas.The surface runoff in Luvisol was up to 47% higher than those measured in Regosol. The plots with cactus palm showed a loss of organic carbon and nitrogen up to seven times greater than the plots in fallow system. Regosol is more sensitive to land-use change compared with Luvisol.

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Section: Discussionmentioning

confidence: 99%

Preliminary experimental data on surface runoff and soil loss in the Caatinga

Neto

Xavier

Souza

et al. 2023

Earth Surf Processes Landf

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“…A non-uniform urban morphology can be recognized between the internal area and the coast as testimony of a common trend in Portugal since the 18th century (Lourenço et al, 2009). The Douro region was involved in several territorial development plans and programs, EU investments to raise the local economy for triggering a socioeconomic improvement, job creation and life quality (Lourenço et al, 2009)…”

Section: Case Study: the Douro Valleymentioning

confidence: 99%

A decision support system for territorial resilience assessment and planning: An application to the Douro Valley (Portugal)

Assumma¹,

Bottero²,

Angelis³

et al. 2021

Science of The Total Environment

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“…The effect of land use changes on gas emissions in diverse ecosystems throughout South America has been the focus of several studies; however, studies in the Amazon region remain scarce. For example, Metay et al (2007) and Siqueira Neto et al (2020) studied CH 4 emissions in Cerrado soils, Lourenço et al (2022) performed analyses in the Caatinga, and Vasconcelos et al (2018) conducted studies in Brazilian pampas, where all authors observed changes in soil methane emissions when changing land cover, from forest to pasture or agriculture. Physical and chemical differences in the soil can modify gas emissions in the Amazon biome, making it necessary to conduct regional studies to understand how emissions occur in different ecosystems to seek mitigation strategies for CH 4 in these areas.…”

Section: Introductionmentioning

confidence: 99%

How does land use change affect the methane emission of soil in the Eastern Amazon?

Lage Filho,

Cardoso,

Azevedo

et al. 2023

Front. Environ. Sci.

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Methane emissions (CH4) from the soil increase according to changes made in forest soils and adverse edaphoclimatic factors. Soil temperature and nutrients will impact the activity of microorganisms, depending on land use. The objective of this study was to evaluate the impacts of land use, temperature, and nitrogen application on CH4 emissions from soils within the Amazon region. Three experiments were conducted in a completely randomized design. Each experiment consisted of five replicates to measure CH4 emissions. The variables examined in these experiments were: 1) three distinct land uses (forest, pasture, or agriculture; 2) soil temperatures (25, 30, 35, or 40°C); and 3) input of nitrogen to the soil (0, 90, 180, or 270 kg of N ha−1). In this study, the highest emissions occurred in pasture soils, with values of 470 μg of CH4 g−1 of dry soil, while forest and agricultural soils suffer the effects of CH4 oxidation. Temperature is a factor that contributes to CH4 emissions, and temperatures above 30°C tended to reduce gas emissions in the systems studied, since the highest emission was observed in pasture soil kept at 25°C (∼1,130 μg of CH4 g−1 of dry soil). Nitrogen fertilization in pasture soils reduces CH4 emitted nearly 140% as the dose increased. As a result, the pasture soils tended to emit higher concentrations of CH4 into the atmosphere. However, reducing these emissions from the pasture management employed is possible.

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Temporal variation of soil CO2 emission in different land uses in the Caatinga

Cited by 8 publications

References 41 publications

Preliminary experimental data on surface runoff and soil loss in the Caatinga

Preliminary experimental data on surface runoff and soil loss in the Caatinga

A decision support system for territorial resilience assessment and planning: An application to the Douro Valley (Portugal)

How does land use change affect the methane emission of soil in the Eastern Amazon?

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