A new ecological control method for Pisha sandstone based on hydrophilic polyurethane

Linag, Zhishui; Wu, Zhiren; Noori, Mohammad; Yang, Caiqian; Yao, Wei

doi:10.1007/s40333-017-0102-7

Cited by 17 publications

(10 citation statements)

References 12 publications

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“…PU can bind light density soil imparting good slake durability, resistivity against impact effects, abrasion, and freeze-thaw resistance; an additional property is the low unit volume weight (Komurlu and Kesimal, 2015). In a short-term experiment, a PU elastic gel with strong adhesion capabilities can reduce the erosion throughout the consolidation layer formed, providing the future vegetation seeds a chance to develop (Linag et al., 2017). The chemical PU recycling is normally precluded, but the synthesis of thermoplastic and PUs flexible foams can recover useful monomers (Schneiderman et al., 2016).…”

Section: Main Textmentioning

confidence: 99%

Resource or waste? A perspective of plastics degradation in soil with a focus on end-of-life options

Scalenghe

2018

Heliyon

111

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‘Capable-of-being-shaped’ synthetic compounds are prevailing today over horn, bone, leather, wood, stone, metal, glass, or ceramic in products that were previously left to natural materials. Plastic is, in fact, economical, simple, adaptable, and waterproof. Also, it is durable and resilient to natural degradation (although microbial species capable of degrading plastics do exist). In becoming a waste, plastic accumulation adversely affects ecosystems. The majority of plastic debris pollutes waters, accumulating in oceans. And, the behaviour and the quantity of plastic, which has become waste, are rather well documented in the water, in fact. This review collects existing information on plastics in the soil, paying particular attention to both their degradation and possible re-uses. The use of plastics in agriculture is also considered. The discussion is organised according to their resin type and the identification codes used in recycling programs. In addition, options for post-consumer plastics are considered. Acknowledged indicators do not exist, and future study they will have to identify viable and shared methods to measure the presence and the degradation of individual polymers in soils.

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Section: Main Textmentioning

confidence: 99%

Resource or waste? A perspective of plastics degradation in soil with a focus on end-of-life options

Scalenghe

2018

Heliyon

111

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“…Specifically, microbial taxa in the inoculum could have several ecological functions to promote the plant growth, such as auxin secretion (mainly indoleacetic acid), iron ionophores production, and the ability to dissolve phosphorus (data not shown). Furthermore, HP can enhance the ability of moisture retention, fertility, and temperature in the soil subsystem (Liang & Wu, 2016; Liang, Wu, Noori, & Deng, 2017; Liang, Wu, Noori, Yang, & Yao, 2017; Wu, Gao, Wu, Iwashita, & Yang, 2011). Based on plant growth performance, PMHP was found to be the best among all four ecological restoration treatments in the degraded alpine steppe in Northern Tibet.…”

Section: Discussionmentioning

confidence: 99%

“…A significance alpha of .05 and an effect size threshold of 3 was used for all of the biomarkers evaluated. Only taxa meeting an LDA significance threshold of 3 are shown [Colour figure can be viewed at wileyonlinelibrary.com] Liang, Wu, Noori, & Deng, 2017;Liang, Wu, Noori, Yang, & Yao, 2017;Wu, Gao, Wu, Iwashita, & Yang, 2011). Based on plant growth performance, PMHP was found to be the best among all four ecological restoration treatments in the degraded alpine steppe in Northern Tibet.…”

Section: Discussionmentioning

confidence: 99%

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Ecological restoration treatments enhanced plant and soil microbial diversity in the degraded alpine steppe in Northern Tibet

Wang

et al. 2020

Land Degrad Dev

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Plant community structure and microbial ecological functions of alpine steppe in Northern Tibet are susceptible to variations in the natural environment and anthropogenic activities. In recent times, the alpine steppe in Northern Tibet has been severely degraded, that is, plant biodiversity was reduced and plant coverage declined. It is crucial to restoring the degraded alpine steppe in Northern Tibet to maintain the sustainable development of the environment and social economy. This study aimed to evaluate the ecological engineering benefits of four types of ecological restoration treatments: (a) independent treatment of sowing plant seeds; (b) combined treatments with (a) and fertilized microbial inoculum; (c) combined treatments with (a) and spraying hydrophilic polyurethane (which can enhance the ability of moisture retention, fertility, and temperature in the soil subsystem); and (d) the comprehensive treatments with (a) and fertilized microbial inoculum and spraying hydrophilic polyurethane. Noting their effect on plant growth performance, plant taxonomic and functional diversity, soil physicochemical properties, and soil microbial diversity in the degraded alpine steppe. Plots where no seeds were planted and no other amendments were applied were selected as experimental controls. Plant height, leaf size, plant taxonomic and functional diversity, total carbon and nitrogen contents, soil bacterial and fungal diversity were significantly enhanced under the four ecological restoration treatments. Plant growth performance (in particular, competitiveness for sunlight acquisition and leaf photosynthetic area), and soil fertility were significantly enhanced under the four treatments. The improved plant taxonomic and functional diversity and soil microbial diversity could facilitate the biological communities in degraded alpine steppe to develop better ecological functions, especially community stability. Meanwhile, the combination of all three treatments was found to be the best among all treatments applied in this study. This can help restore the degraded alpine steppe in Northern Tibet.

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“…The annual sediment transport modulus at the Ganguyi hydrological station (Figure , the upstream area is 5852 km 2 ) ranged from 136.7 t/km 2 to 31100.5 t/km 2 with an average of 6728.3 t/(km 2 ·a) from 1955 to 2014 (YRCC, ). However, the landscape in the Huangfuchuan watershed includes a weathered sandstone hilly–gully region, extremely low (<20%) vegetation coverage and widely exposed bedrock (Linag et al ., ). The soil types are characterized by weathering sandstone, loess, and desert sand, and the land surface is dominated by dense gullies with poor vegetation cover (Wang et al ., ).…”

Section: Methodsmentioning

confidence: 99%

Variation in the sediment deposition behind check‐dams under different soil erosion conditions on the Loess Plateau, China

Wei

Jiao

et al. 2018

Earth Surf Processes Landf

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To maintain a reasonable sediment regulation system in the middle reaches of the Yellow River, it is critical to determine the variation in sediment deposition behind check‐dams for different soil erosion conditions. Sediment samples were collected by using a drilling machine in the Fangta watershed of the loess hilly–gully region and the Manhonggou watershed of the weathered sandstone hilly–gully (pisha) region. On the basis of the check‐dam capacity curves, the soil bulk densities and the couplet thickness in these two small watersheds, the sediment yields were deduced at the watershed scale. The annual average sediment deposition rate in the Manhonggou watershed (702.0 mm/(km2·a)) from 1976 to 2009 was much higher than that in the Fangta watershed (171.6 mm/(km2·a)) from 1975 to 2013. The soil particle size distributions in these two small watersheds were generally centred on the silt and sand fractions, which were 42.4% and 50.7% in the Fangta watershed and 60.6% and 32.9% in the Manhonggou watershed, respectively. The annual sediment deposition yield exhibited a decreasing trend; the transition years were 1991 in the Fangta watershed and 1996 in the Manhonggou watershed (P < 0.05). In contrast, the annual average sediment deposition yield was much higher in the Manhonggou watershed (14011.1 t/(km2·a)) than in the Fangta watershed (3149.6 t/(km2·a)). In addition, the rainfalls that induced sediment deposition at the check‐dams were greater than 30 mm in the Fangta watershed and 20 mm in the Manhonggou watershed. The rainfall was not the main reason for the difference in the sediment yield between the two small watersheds. The conversion of farmland to forestland or grassland was the main reason for the decrease in the soil erosion in the Fangta watershed, while the weathered sandstone and bare land were the main factors driving the high sediment yield in the Manhonggou watershed. Knowledge of the sediment deposition process of check‐dams and the variation in the catchment sediment yield under different soil erosion conditions can serve as a basis for the implementation of improved soil erosion and sediment control strategies, particularly in semi‐arid hilly–gully regions. Copyright © 2018 John Wiley & Sons, Ltd.

show abstract

A new ecological control method for Pisha sandstone based on hydrophilic polyurethane

Cited by 17 publications

References 12 publications

Resource or waste? A perspective of plastics degradation in soil with a focus on end-of-life options

Resource or waste? A perspective of plastics degradation in soil with a focus on end-of-life options

Ecological restoration treatments enhanced plant and soil microbial diversity in the degraded alpine steppe in Northern Tibet

Variation in the sediment deposition behind check‐dams under different soil erosion conditions on the Loess Plateau, China

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