Long-term changes in soil aggregation comparing forest and agricultural land use in different Mediterranean soil types

Chrenková, Katarína; Mataix-Solera, Jorge; Dlapa, Pavel; Arcenegui, Victoria

doi:10.1016/j.geoderma.2014.07.025

Cited by 43 publications

(31 citation statements)

References 62 publications

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“…O percentual de agregados maiores que 2 mm no solo sob cerrado apresentou as maiores médias tanto para o método de peneiramento em água quanto para o método de peneiramento a seco (Tabela 2), o que era esperado pois a vegetação perene proporciona maior agregação quando comparadas com culturas anuais (CHRENKOVÁ et al, 2014). O método de peneiramento a seco se mostrou mais sensível em indicar diferenças entre os sistemas, visto que a diferença entre os sistemas para esse método foi de 47,86%, enquanto no método de peneiramento em água foi de 17,28% o que difere de Thomaz (2011) que afirma que o método de peneiramento em água é mais eficiente em detectar o efeito do fogo sobre a agregação do solo.…”

Section: Resultsunclassified

Inﬂuência da temperatura sobre a agregação do solo avaliada por dois métodos

et al. 2019

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As queimadas elevam a temperatura da superfície do solo podendo reduzir sua agregação. Sendo assim objetivou-se avaliar a inﬂuência da temperatura sobre a agregação do solo em diferentes manejos pelo método de peneiramento em água e a seco. O experimento foi conduzido no laboratório de Física dos Solos da Universidade do Estado da Bahia (UNEB). O solo caracterizado como Latossolo Vermelho Amarelo foi coletado em uma área de plantio de soja em sistema de plantio direto e em uma área de cerrado preservado (Cerradão), vizinha à área cultivada com soja. O delineamento experimental foi inteiramente casualizado em esquema fatorial 2x2x6, com quatro repetições, sendo o primeiro fator o manejo do solo (sistema plantio direto de soja e cerrado preservado), o segundo fator o método (peneiramento em água e a seco) e o terceiro fator a variação das temperaturas (27°C, 150ºC, 250ºC, 350ºC, 450ºC, 550ºC) aplicada ao solo. As variáveis analisadas foram o percentual das classes de agregados > 2 mm; 2-1 mm, 1-0,5 mm; 0,5-0,250 mm; 0,250-0,106 mm e menores que 0,106 mm. Também foram avaliados o diâmetro médio ponderado (DMP) e o diâmetro médio geométrico (DMG) de agregados. A exposição dos solos a altas temperaturas reduziu a sua agregação e essa redução foi mais perceptível pelo método de peneiramento a seco. O monocultivo da soja, mesmo em sistema plantio direto, reduziu a estabilidade dos agregados quando comparado à vegetação de cerrado preservado.

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Section: Resultsunclassified

Inﬂuência da temperatura sobre a agregação do solo avaliada por dois métodos

et al. 2019

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“…Thus, the microbial degradation of pollutants could be affected. What's more, the progress of the redox reaction could be affected as well [29]. Therefore, in order to make the system perform well, it was necessary to regulate the matrix depth.…”

Section: Effects Of Orp On Unsaturated Permeabilitymentioning

confidence: 99%

The relationship between the unsaturated permeability coefficients (UPC) determined and oxidation-reduction potential (ORP) in the subsurface wastewater infiltration system (SWIS)

Li¹,

Zhang²,

Li³

et al. 2019

Desalination and Water Treatment

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a b s t r a c tThe estimation of unsaturated permeability coefficients (UPC) is of great importance on the properties of the matrix. Aim to study the relationship between the UPC and oxidation -reduction potential (ORP) in different matrix depths in the subsurface wastewater infiltration system (SWIS) and provide scientific basis for regulating SWIS and increasing pollutant removal, a test experiment of simulating the SWIS which included an inflow period (12 h) and a drying period (12 h) in one cycle was designed with a hydraulic load of 0.10 m 3 ·(m 2 ·d) -1 . Results investigated that ORP could increase with UPC increasing in 70 and 115 cm and decrease with the UPC increasing in 100 and 130 cm matrix depths. Phenomena indicated that capillary action could affect UPC and ORP obviously. Moreover, the existence of oxygen and low volumetric water contents could impose UPC and ORP. UPC in the 100 cm matrix depth below proved that anaerobic area could be found in aerobic environment under alternation conditions. UPC in different matrix depths of a satisfactory SWIS could change from 2.49 × 10 -7 to 1.16 × 10 -3 cm·s -1 . Treated water met reused requirements and no clogging was found.

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“…Conducting agricultural production in delta soils first requires reclamation activities (Krishnamoorthy et al, 2014). It is known that reclamation activities such as plowing, irrigation and fertilization cause changes in the physical (Jiao et al, 2014;Li et al, 2014) and chemical properties (Cui et al, 2012;Han et al, 2014;Jiao et al, 2014) of the soil.…”

Section: Introductionmentioning

confidence: 99%

Factors of soil diversity in the Batumi delta (Georgia)

Turgut¹,

Ateş²

2017

Solid Earth

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Abstract. The aim of this study was to determine certain basic properties of soils in the Batumi delta (southwestern Georgia) to determine the relationships of studied properties and to identify differences with regards to these properties between different sampling sites in the delta that were selected based on the delta morphology. In this context, a total of 125 soil samples were collected from five different sampling sites, and the clay, silt and sand content of the samples were determined along with their mean weight diameter (MWD) values, aggregate stability (AS) values, amount of water retained under −33 (FC) and −1500 kPa (WP) pressure and organic matter (OM) content. Correlation analysis indicated that clay content and OM were positively correlated with MWD, and OM was positively correlated with AS. However, the sand content was found to be negatively correlated with MWD. In addition, clay, silt and OM content were positive correlated with FC and WP. Variance analysis results determined statistically significant differences between the sampling sites with respect to all of the evaluated properties. The active delta section of the study area was characterized by high sand content, while the lower delta plain was characterized by high OM and AS values, and the upper delta plain was characterized by high MWD values, high FC and WP moisture content levels and high clay and silt content. In conclusion, it was demonstrated that the examined properties were significantly affected by the different morphological positions and usages of these different areas. These results may help with the management of agricultural lands in the Batumi delta, which has never been studied before.

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Long-term changes in soil aggregation comparing forest and agricultural land use in different Mediterranean soil types

Cited by 43 publications

References 62 publications

Inﬂuência da temperatura sobre a agregação do solo avaliada por dois métodos

Inﬂuência da temperatura sobre a agregação do solo avaliada por dois métodos

The relationship between the unsaturated permeability coefficients (UPC) determined and oxidation-reduction potential (ORP) in the subsurface wastewater infiltration system (SWIS)

Factors of soil diversity in the Batumi delta (Georgia)

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