Soil organic matter dynamics and land-use change on Oxisols in the Cerrado, Brazil

Gmach, Maria-Regina; Dias, Bruno Oliveira; Silva, Carlos Antônio da; Nóbrega, Júlio César Azevedo; Filho, José Ferreira Lustosa; Neto, Marcos Siqueira

doi:10.1016/j.geodrs.2018.e00178

Cited by 50 publications

(51 citation statements)

References 48 publications

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“…According to Gmach et al (2018), areas used to produce eucalyptus in Brazil are generally acidic soil, poor in nutrients and organic matter. Species of the genus Eucalyptus are more tolerant to high levels of Al +3 in the soil than most agricultural crops in addition to requiring levels of Ca and Mg below those established as critical for most cultures (Rodrigues et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…Species of the genus Eucalyptus are more tolerant to high levels of Al +3 in the soil than most agricultural crops in addition to requiring levels of Ca and Mg below those established as critical for most cultures (Rodrigues et al, 2016). This allows planting of eucalyptus trees to be carried out in low agricultural aptitude soils, such as Quartzarenic Neosol (Gmach et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

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Spatial and temporal variability of soil and plant attributes after application of cellulose residue

Lima

Souza

Montanari

et al. 2018

Agraria

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The industries of cellulose and paper have generated large amounts of solid waste and effluents which have been used as soil conditioners and source of nutrients to improve physical and chemical attributes of areas growing forest species. This study analyzes the spatial and temporal variability of Eucalyptus urograndis regarding the chemical attributes of soil treated with cellulose residue. The fertilization of an experimental area in the Três Lagoas county used a lime sludge/Oxyfertil ® compound with a 2 ha. experimental grid containing 50 sampling points set up over it. Plant and soil samples were collected during three consecutive years

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Spatial and temporal variability of soil and plant attributes after application of cellulose residue

Lima

Souza

Montanari

et al. 2018

Agraria

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“…The recycling of carbon in the plant-soil system is mainly due to the carbon inputs from plant production and the outputs of microbial decomposition [10]. The higher vegetation quality and above-and belowground biomass in the LEY treatment led to the higher SOC concentration and thus resulted in the highest SOCS compared with other vegetation types [9,30,31]. In addition, the communities of Puccinellia tenuiflora (Griseb.)…”

Section: Effect Of Vegetation Type On Soc Concentration and Storagementioning

confidence: 99%

Changes in Storage and the Stratification Ratio of Soil Organic Carbon under Different Vegetation Types in Northeastern China

Liu

Ding

et al. 2020

Agronomy

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The depth distribution of soil organic carbon (SOC) in a soil profile is important to examine the effects of different treatments on SOC sequestration. This study was conducted to determine the effects of different vegetation types on the concentration, storage, and stratification ratio (SR) of SOC in northeastern China. Five vegetation types, Leymus chinensis (LEY), Puccinellia tenuiflora (PUC), Echinochloa phyllopogon (ECH), saline seepweed (SUA), and Chloris virgata Swartz (CHL), were selected as treatments. Soil bulk density and SOC concentration were measured at 0 to 50 cm depth, and SOC storage and four SRs (SR1 [0-10:10-20 cm], SR2 [0-10:20-30 cm], SR3 [0-10:30-40 cm], and SR4 [0-10:40-50 cm]) were calculated under the five vegetation types. Results showed a pronounced reduction in SOC concentration with increasing soil depth. Vegetation types had significant effects on SOC concentration and storage. Under PUC, ECH, SUA, and CHL treatments, SOC concentrations (2.150, 1.068, 4.110, and 2.542 g kg −1 , respectively) and storages (15.075, 7.273, 30.024, and 18.078 Mg ha −1 , respectively) at 0-50 cm depth were lower than those under the LEY treatment. SR1 values were all < 2, while SR2, SR3, and SR4 values were all > 2 except for SR2 under ECH and SUA treatments. Vegetation types had significant effects on SR3 (p < 0.001) and SR4 (p = 0.040), while no significant differences were found for SR1 and SR2 due to the narrow range, with values of 0.248 and 0.553 for SR1 and SR2, respectively, among the vegetation types. These results indicated that the degraded soils have great potential to sequester organic carbon in northeastern China, and SR3 could be used as an effective index to show the changes in SOC concentration and soil quality in northeastern China.

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“…The Cerrado is the second largest biome in Brazil and the most biodiverse tropical savannah in the world [19], it acts as a great sequester of atmospheric carbon [14,15,34]. The lack of studies related to the quantification of its total biomass compromises the understanding of the dynamics of CO 2 in this biome [28].…”

Section: Introductionmentioning

confidence: 99%

Estimation of the aboveground biomass and carbon stocks in open Brazilian Savannah developed on sandy soils

Oliveira

Francelino

Daher

et al. 2019

Carbon Balance Manage

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Background: The Cerrado is the second largest biome in Brazil and the most biodiverse tropical savannah in the world and acts as a great sequester of atmospheric carbon. The lack of studies related to the quantification of its total biomass compromises the understanding of the dynamics of CO 2 in this biome. Thus, it is relevant to develop studies aiming at obtaining accurate estimates of the carbon stock in the different phytophysiognomies that make the Cerrado, to include them in appropriate forest management models. Based on the hypothesis that the amount of carbon stored can vary according to the vegetation typology and vegetation compartments, the aerial stock of dry biomass and carbon were estimated in different compartments (arboreal, herbaceous-shrub and litter). The study was developed in open Brazilian savannah and soils on the sandstone and discussed the effect of fire on this phytophysiognomy. For the arboreal compartment were adjusted mathematical models to fit the biomass equations to estimate the individual stock of the trees in this compartment. The results of the stocks were discussed considering the effect of fire on the phytophysiognomy. Results: Based on the precision and extra distribution measures, the Schumacher-Hall (non-logarithmic) equation presented better results to estimate the individual biomass and carbon stocks of the open Brazilian savannah trees. The aboveground biomass was 12.88 Mg ha −1 , corresponding to a total carbon stock of 5.91 Mg ha −1 , where most of the stocks are in the herbaceous-shrub compartment (44%). The arboreal compartment accounts for the smallest part of the stocks, followed by the litter. Conclusions: The observed values are in the interval verified for other areas of savannah studied in Brazil. The values verified for the open Brazilian savannah in sandy soils are at the lower limit of this range, due to the nutrient-poor nature of this type of soil. The distribution of stocks in the different compartments above the ground points to the fragility of this environment to the random fire effect, common in the region. That shows the need for conservation measures for vegetation maintenance and soil protection to preserve adequate nutrient cycling in the ecosystem.

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Soil organic matter dynamics and land-use change on Oxisols in the Cerrado, Brazil

Cited by 50 publications

References 48 publications

Spatial and temporal variability of soil and plant attributes after application of cellulose residue

Spatial and temporal variability of soil and plant attributes after application of cellulose residue

Changes in Storage and the Stratification Ratio of Soil Organic Carbon under Different Vegetation Types in Northeastern China

Estimation of the aboveground biomass and carbon stocks in open Brazilian Savannah developed on sandy soils

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