Comparing Aggregate Stability Tests for Soil Physical Quality Indicators

Moncada, Mansonia Alejandra Pulido; Gabriëls, Donald; Cornelis, Wim; Lobo, Deyanira

doi:10.1002/ldr.2225

Cited by 94 publications

(62 citation statements)

References 38 publications

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“…This may be due to the presence of the lowest amount of SOM, limited microbial activity, and the lowest root biomass, which may play a major role in the formation of soil aggregates and is important for MWD and GMD [41]; similar experiments were conducted, indicating that the MWD of the surface soil layer was higher in grassland compared to cropland. By using the same techniques, our findings are in line with previous studies [2,6,15,42,43]. The removal of plant residue from the soil surface layer and animal grazing are the main causes of the disturbance of soil aggregates [28,44].…”

Section: Mwd and Gmd In Different Land-usessupporting

confidence: 90%

Effects of Different Land-Use Systems on Soil Aggregates: A Case Study of the Loess Plateau (Northern China)

Kalhoro

Chen

et al. 2017

Sustainability

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Soil aggregate stability is an important indicator for controlling soil losses and can improve soil quality, particularly in an area such as the Loess Plateau. The objective of this study was to estimate the differences in soil aggregates across six different land-use systems (grassland, apple orchard, abandoned apple orchard, cropland maize, cropland wheat, and shrub-grassland). For this purpose, dry and wet sieving techniques were employed to assess aggregate content and aggregate stability. Higher percentages of water stable aggregates were observed in the abandoned apple orchard and shrub-grassland at 63% and 61%, respectively. The maximum dry aggregate stability (%) was recorded at 78% and 77% in both wheat cropland and common apple orchard, and the abandoned apple orchard was only 74%. Both mean weight diameters and geometric mean diameters of aggregate were recorded as higher in grassland, shrub-grassland, and the abandoned apple orchard, than the other land uses. The formation of soil aggregates and their stability were positively correlated with soil organic carbon content and root biomass of different plant communities. Higher amounts of soil organic carbon content were noted in the abandoned apple orchard, common apple orchard, and natural grassland at the 0-20 cm soil layer. The results of the correlation coefficient showed a positive significant correlation between the mean weight diameter, geometric diameter, root biomass, and soil organic carbon content. Conclusively, the type of land use affected the soil aggregation and distribution of size fractions; the small fractions of the aggregates formed large fractions by combining with fresh organic matter, and increased soil organic carbon concentrations were closely linked with the formation of macro-aggregates. Thus, converting slope farmland to forestland and grassland could improve water-stable aggregate and reduce soil disturbances in areas (like the Loess Plateau) with the highest erosion risk.

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Section: Mwd and Gmd In Different Land-usessupporting

confidence: 90%

Effects of Different Land-Use Systems on Soil Aggregates: A Case Study of the Loess Plateau (Northern China)

Kalhoro

Chen

et al. 2017

Sustainability

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“…The rate of decomposition of organic amendments and SOC remains in the long term varies with the intrinsic quality of the amendment (Lashermes et al, 2009;Novara et al, 2015). Soil organic matter content is one of the most important soil quality indicators of soil recovery (Mahmoud and Abd El-Kader, 2015;Parras-Alcántara et al, 2015;Pulido Moncada et al, 2015) and is a good sign for soil quality (Gelaw et al, 2015). The quality of soil organic matter, soil structure, microbial activity, and rainfall intensity are, in fact, important parameters that should be evaluated and correlated to assess the fate of carbon during transportation .…”

Section: Soil Organic Carbon (Soc)mentioning

confidence: 99%

“…Physical and chemical properties are the main indicators used to assess soil quality (Bone et al, 2014;Paz-Ferreiro and Fu, 2013;Pulido Moncada et al, 2015). Soil quality can be threatened by the increase in human activities such as urbanization and intensive agricultural activities (Paz-Ferreiro and Fu, 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of spent mushroom compost application on the physicochemical properties of a degraded soil

Gümüş¹,

Şeker²

2017

Solid Earth

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Abstract. Under field and laboratory conditions, the application of organic amendments has generally shown an improvement in soil physicochemical properties. Here, spent mushroom compost (SMC) is proposed as a suitable organic amendment for soil structure restoration. Our study assessed the impact of SMC on the physicochemical properties of a weak-structured and physically degraded soil. The approach involved the establishment of a pot experiment with SMC applications into soil (control, 0.5, 1, 2, 4 and 8 %). Soils were incubated at field capacity (−33 kPa) for 21, 42, and 62 days under laboratory conditions. SMC applications into the soil significantly increased the aggregate stability (AS) and decreased the modulus of rupture. The application of SMC at rates of 1, 2, 4, and 8 % significantly increased the total nitrogen and soil organic carbon contents of the degraded soil at all incubation periods (p < 0.05). The results obtained in this study indicate that the application of SMC can improve soil physicochemical properties, which may benefit farmers, land managers, and mushroom growers.

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“…Recent studies claim that land use changes are one of the most important factors that affect surface water characteristics and soil fertility [6][7][8]. During the last decades, land use changes and water quality of rainwater harvesting systems have been associated with population growth, urban development, intensive agricultural activities, degradation of pastures and deforestation [9,10].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Spatiotemporal Effects of Land Use Changes on Runoff and Nitrate Loads in the Talar River

Kavian

Mohammadi

Gholami

et al. 2018

Water

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This research surveyed the effects of land use changes on flow nitrate pollution in the Talar River (northern Iran), using Landsat images of 1991 and 2013 and the Soil and Water Assessment Tool (SWAT). The results indicated that forest areas decreased by 14.9% and irrigated crops, dry land farming areas, range lands and residential areas increased by 46.8%, 31.1%, 4.7% and 17.5%, respectively. To calibrate and validate the studied period, the Nash Sutcliffe model efficiency (NSE) and coefficient of determination (R 2 ) were applied, ranging from 0.57 to 0.75 and from 0.62 to 0.76 for flow simulation and 0.84 and 0.63 and 0.75 and 0.83 for nitrate simulation, respectively. The results of land use scenarios indicated that respective water flow and nitrate loads increased by 34. 4% and 42.2% in 1991-2013 and may even increase by 42.3% and 55.9% in the simulated period of 2013-2050 in all sub-basins. It is likely that the main reason for these results was due to the increase in agricultural activities and the decrease in forestry areas. Our findings showed the useful combination of modelling techniques (land cover changes and SWAT) to develop valuable maps able to design correct land management plans and nature-based solutions for water quality of runoff water harvesting systems in the future.

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Comparing Aggregate Stability Tests for Soil Physical Quality Indicators

Cited by 94 publications

References 38 publications

Effects of Different Land-Use Systems on Soil Aggregates: A Case Study of the Loess Plateau (Northern China)

Effects of Different Land-Use Systems on Soil Aggregates: A Case Study of the Loess Plateau (Northern China)

Effects of spent mushroom compost application on the physicochemical properties of a degraded soil

Assessment of the Spatiotemporal Effects of Land Use Changes on Runoff and Nitrate Loads in the Talar River

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