Selection and Configuration of Plants in High- and Steep-Cutting Rock Slope Greening in a Subtropical Region: Case Study of the First-Phase Urban Expressway of Xiazhou Avenue in Yichang

Liu, Qi; Su, Lijun; Xiao, Hai; Xu, Wennian; Xia, Zhenyao

doi:10.1061/jhtrcq.0000710

Cited by 3 publications

(3 citation statements)

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“…A. fruticosa has high drought, moisture, and salinity tolerance. It has a substantial slope-fixing capacity, as it grows fast with a relatively well-developed root system after seedling emergence [20].…”

Section: Experimental Shrub Speciesmentioning

confidence: 99%

Effects of Water-Retaining Agent Dosages on Slope-Protection Plants and Soil Nutrients on Rocky Slopes

Xerdiman

Zhou

et al. 2022

Sustainability

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Rocky slopes lack the necessary conditions for plant growth, i.e., soil and water, making vegetation recovery difficult and necessitating artificial soil conditions for vegetation establishment. Water-retaining agents are essential functional substances for constructing artificial soil on rocky slopes. In this study, the effect of water-retaining agents on the growth of artificial vegetation and soil nutrient loss was investigated by setting different application rates of water-retaining agents (10 g/m2, 20 g/m2, 30 g/m2, 40 g/m2, and 50 g/m2). Artificially simulated rocky slope conditions were achieved using the guest soil spraying technology after hanging the net, which provided support for the application of the water-retaining agent. Results showed that the contents of extractable nitrogen (EN), extractable phosphorus (EP), and extractable potassium (EK) in the soil, the number of plant individuals per unit area, plant height, and ground diameter of the water-retaining agent treatment were significantly higher than those of the control group (set up with no water retention as the control group, hereafter “CK”). By contrast, the nutrient content in the runoff fluid was significantly lower than that of CK. The application of the water-retaining agent significantly enhanced the soil’s ability to retain water and fertilizer, thus improving the growing environment and plant growth. Under the conditions of this experiment, the application rate of a 40 g/m2 water-retaining agent is reasonable from the perspectives of economic cost, soil nutrients, and plant growth.

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Section: Experimental Shrub Speciesmentioning

confidence: 99%

Effects of Water-Retaining Agent Dosages on Slope-Protection Plants and Soil Nutrients on Rocky Slopes

Xerdiman

Zhou

et al. 2022

Sustainability

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“…Vines are pioneer plants in the succession of forest communities in rocky desertification areas [ 36 ], of which the Lonicera japonica ( L. japonica ) is highly adaptable, not strictly selective in terms of soil and climate and can be tolerant to drought, cold and salt in order to grow on limestone soils and generally saline lands, making it an excellent medicinal, silvicultural and greening plant [ 37 , 38 ]. The Parthenocissus tricuspidate ( P. tricuspidate ), an ideal plant for the greening of vine plants, is also highly adaptable to soil and climate [ 39 ]. It is resistant to cold, drought and barren, it has adaptability to soil acidity and alkalinity, and it is often used to restore vegetation on arid and barren hills.…”

Section: Introductionmentioning

confidence: 99%

Water Metabolism of Lonicera japonica and Parthenocissus quinquefolia in Response to Heterogeneous Simulated Rock Outcrop Habitats

Zhao

Xing

et al. 2023

Plants

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The karst carbon sink caused by rock outcrops results in enrichment of the bicarbonate in soil, affecting the physiological process of plants in an all-round way. Water is the basis of plant growth and metabolic activities. In heterogeneous rock outcrop habitats, the impact of bicarbonate enrichment on the intracellular water metabolism of plant leaf is still unclear, which needs to be revealed. In this paper, the Lonicera japonica and Parthenocissus quinquefolia plants were selected as experimental materials, and electrophysiological indices were used to study their water holding, transfer and use efficiency under three simulated rock outcrop habitats, i.e., rock/soil ratio as 1, 1/4 and 0. By synchronously determining and analyzing the leaf water content, photosynthetic and chlorophyll fluorescence parameters, the response characteristics of water metabolism within leaf cells to the heterogeneous rock outcrop habitats were revealed. The results showed that the soil bicarbonate content in rock outcrop habitats increased with increasing rock/soil ratio. Under the treatment of a higher concentration of bicarbonate, the leaf intra- and intercellular water acquisition and transfer efficiency as well as the photosynthetic utilization capacity of P. quinquefolia decreased, the leaf water content was lower, and those plants had low bicarbonate utilization efficiency, which greatly weakened their drought resistance. However, the Lonicera japonica had a high bicarbonate use capacity when facing the enrichment of bicarbonate within cells, the above-mentioned capacity could significantly improve the water status of the leaves, and the water content and intracellular water-holding capacity of plant leaves in large rock outcrop habitats were significantly better than in non-rock outcrop habitats. In addition, the higher intracellular water-holding capacity was likely to maintain the stability of the intra- and intercellular water environment, thus ensuring the full development of its photosynthetic metabolic capacity, and the stable intracellular water-use efficiency also made itself more vigorous under karstic drought. Taken together, the results suggested that the water metabolic traits of Lonicera japonica made it more adaptable to karst environments.

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“…The common technologies for the treatment and restoration of exposed slopes worldwide include the spraying greening method, three-dimensional planting network greening method, vegetation green carpet, planting hole greening, and thick substrate technology (Li et al, 2017;Tang et al, 2018;Li et al, 2019;Liu et al, 2019;Wang Y. et al, 2022). Based on these technologies, a series of studies and engineering practices have been conducted in various countries to continuously optimize the greening substrate and improve engineering technology, and as a result, a variety of new technologies have been gradually developed (Huang et al, 2017;Li et al, 2017;Broda and Gawlowski, 2018;Li et al, 2018;Wang Y. et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Mineral solubilizing microorganisms and their combination with plants enhance slope stability by regulating soil aggregate structure

Wang,

Tang,

Liu

et al. 2023

Front. Plant Sci.

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IntroductionThe stability of exposed slopes is prone to natural disasters, seriously threatening socio-economic and human security. Through years of exploration and research, we proposed an active permanent greening (APG) method based on patented mineral solubilizing microorganisms (MSMs) as an improvement over the traditional greening method.MethodsIn this study, we selected two MSMs (Bacillus thuringiensis and Gongronella butleri) and a plant species (Lolium perenne L.) set up six treatments (T1, T2, T3, T4, T5, and T6) to investigate the effectiveness of the MSMs and their combinations with the plant species on the soil stability using APG method.ResultsWe noted that both MSMs and the plant species significantly improved soil aggregate stability and organic matter content. Of all the treatments, the T1 treatment exhibited better results, with soil aggregate stability and organic matter content increased to 45.63% and 137.57%, respectively, compared to the control. Soil stability was significant positively correlated with macroaggregate content and negatively with microaggregates. Using structural equation modeling analysis, we further evaluated the mechanism underpinning the influence of organic matter content and fractions on the content of each graded agglomerates. The analysis showed that the macroaggregate content was influenced by the presence of the plant species, primarily realized by altering the content of organic matter and aromatic and amide compounds in the agglomerates, whereas the microaggregate content was influenced by the addition of MSMs, primarily realized by the content of organic matter and polysaccharide compounds. Overall, we observed that the effect of the co-action of MSMs and the plant species was significantly better than that of using MSMs or the plant species alone.DiscussionThe findings of this study provide reliable data and theoretical support for the development and practical application of the APG method to gradually develop and improve the new greening approach.

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Selection and Configuration of Plants in High- and Steep-Cutting Rock Slope Greening in a Subtropical Region: Case Study of the First-Phase Urban Expressway of Xiazhou Avenue in Yichang

Cited by 3 publications

References 0 publications

Effects of Water-Retaining Agent Dosages on Slope-Protection Plants and Soil Nutrients on Rocky Slopes

Effects of Water-Retaining Agent Dosages on Slope-Protection Plants and Soil Nutrients on Rocky Slopes

Water Metabolism of Lonicera japonica and Parthenocissus quinquefolia in Response to Heterogeneous Simulated Rock Outcrop Habitats

Mineral solubilizing microorganisms and their combination with plants enhance slope stability by regulating soil aggregate structure

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