Chemical sand stabilization: A review of material, mechanism, and problems

Zang, Yunxiao; Gong, Wei; Xie, Hao; Liu, Bailing; Chen, Hualin

doi:10.1080/21622515.2015.1105307

Cited by 61 publications

(24 citation statements)

References 80 publications

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“…Based on the Millennium Ecosystem Assessment (MA) in 2000, one quarter of land have been degraded in the world, while the impacts of socio-economic and policy drivers on land degradation have not been reduced since the United Nations Convention to Combat Desertification (UNCCD) entered into force 3 . Many countries have joined the UNCCD and made positive progress in desertification control 4 . For example, a series of projects have been launched against desertification in the Mediterranean countries of Europe 5–7 .…”

Section: Introductionmentioning

confidence: 99%

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Liao

Liu

et al. 2019

Sci Rep

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Revegetation on sandy land has attracted worldwide attention, especially on the extremely fragile alpine eco-region of the Tibetan Plateau. However, the effectiveness of revegetation and its controlling factors have rarely been reported. We collected plant growths and species composition from seven field sites in 2011 and conducted a follow-up random investigation in 2016. The indicators, including richness and diversity, were used to compare the differences among these sites based on redundancy and cluster analyses. The results indicated that plant growth has different characteristics in different land types. The distribution and growth of Artemisia sphaerocephala , Artemisia younghusbandii and Heteropappus gouldii varied with topography, and the crown widths of A. sphaerocephala were 100.6 cm × 87.2 cm on barchan dune and 26.0 cm × 25.4 cm on moving sandy land at valley slopes. These species are likely the pioneer plants for revegetation on sandy land. It seems that sand-protecting barriers play an important role in revegetation. The stone and plastic checkerboard barriers increase plant diversity, while straw barrier promotes the plant growth. These findings provide useful guidance to the ongoing vegetation recovery on sandy land, an important component of the Project on Construction and Protection of Ecological Security Barriers on the Tibetan Plateau.

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Section: Introductionmentioning

confidence: 99%

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Liao

Liu

et al. 2019

Sci Rep

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“…Pits, rocks, perennial vegetation, and other types of barriers and mulches serve to protect soil surfaces and break up connectivity between erosive bare patches (Li et al, 2001(Li et al, , 2006Okin et al, 2009;Fick et al, 2016), reducing wind energy and trapping the overland flow of sediment (Gonzales et al, 2018). Amendments to the soil surface, such as chemical soil stabilizers strengthen bonds between soil particles, increasing the threshold friction velocity (TFV) at which soil particle movement initiates under shear stress from wind (Armbrust and Lyles, 1975;Yang and Tang, 2012;Zang et al, 2015). Other actions attempt to restore perennial vegetation by direct seeding or addition of soil amendments to improve soil fertility (Monsen et al, 2004;Young et al, 2005;Larney and Angers, 2012).…”

Section: Introductionmentioning

confidence: 99%

Induced biological soil crust controls on wind erodibility and dust (PM10) emissions

Fick

Barger

Tatarko³

et al. 2019

Earth Surf Processes Landf

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Inducing biological soil crust (biocrust) development is an appealing approach for dust mitigation in drylands due to the resistance biocrusts can provide against erosion. Using a portable device, we evaluated dust emissions from surfaces either inoculated with biocrust, amended with a plant-based soil stabilizer, or both at varying wind friction velocities. Four months after application, emissions from all treatments were either indistinguishable from or greater than controls, despite evidence of biocrust establishment. All treatments had greater surface roughness and showed more evidence of entrapment of windblown sediment than controls, factors which may have been partially responsible for elevated emissions. There was a synergistic effect of inoculation and stabilizer addition, resulting in a nearly twofold reduction in estimated emissions compared to either treatment alone. Stepwise regression analysis indicated that variables associated with surface crust strength (aggregate stability, penetration resistance) were negatively associated with emissions and variables associated with sediment supply (sand content, loose sediment cover) were positively associated with emissions. With more time to develop, the soil-trapping activity and surface integrity of biocrust inoculum and soil stabilizer mixtures is expected to increase with the accumulation of surface biomass and enhancement of roughness through freezethaw cycles.

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“…Currently, efforts to implement sandy land improvement worldwide mainly involve sand blocking and sand control activities 3–5 . Great achievements are often realized through mechanical sand barriers 6,7 , chemical bonding 8–12 , and various biological sand-fixing techniques 13–15 . Yet, surprisingly little research has used local materials primarily for sand fixation to implement sandy land improvement via eco-environmental conservation.…”

Section: Introductionmentioning

confidence: 99%

Improving water retention capacity of an aeolian sandy soil with feldspathic sandstone

Zhang

Han

2019

Sci Rep

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The Mu Us sandy land in China’s Shaanxi Province faces a critical water shortage, with its aeolian sandy soil endangering the regional eco-environment. Here we investigated the effects of feldspathic sandstone on water retention in an aeolian sandy soil from the Mu Us sandy land. Feldspathic sandstone and aeolian sandy soil samples were mixed at different mass ratios of 0:1 (control), 1:5 (T1), 1:2 (T2), and 1:1 (T3). Soil-water characteristic curves were determined over low- to medium-suction (1–1000 kPa) and high-suction (1000–140 000 kPa) ranges, by centrifuge and water vapor equilibrium methods, respectively. Results showed that the addition of feldspathic sandstone modified the loose structure of the aeolian sandy soil mainly consisting of sand grains. The van Genuchten model described well the soil-water characteristic curves of all four experimental soils (R2-values > 0.97). Soil water content by treatment was ranked as T2 > T3 > T1 > control at the same low matric suction (1–5 kPa), but this shifted to T2 > T1 > T3 > control at the same medium- to high-suction (5–140 000 kPa). T2 soil had the largest saturated water content, with a relatively high water supply capacity. This soil (T2) also had the largest field capacity, total available water content, and permanent wilting coefficient, which were respectively 17.82%, 11.64%, and 23.11% higher than those of the control (P-values < 0.05). In conclusion, adding the feldspathic sandstone in an appropriate proportion (e.g., 33%) can considerably improve the water retention capacity of aeolian sandy soil in the study area.

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Chemical sand stabilization: A review of material, mechanism, and problems

Cited by 61 publications

References 80 publications

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Effect of topography and protecting barriers on revegetation of sandy land, Southern Tibetan Plateau

Induced biological soil crust controls on wind erodibility and dust (PM10) emissions

Improving water retention capacity of an aeolian sandy soil with feldspathic sandstone

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