Carbon nanomaterials are a superior soil amendment for sandy soils than biochar based on impacts on lettuce growth, physiology and soil biochemical quality

Nepal, Jaya; Xin, Xiaoping; Maltais-Landry, Gabriel; Ahmad, Wiqar; Pereira, Jorge; Santra, Swadeshmukul; Wright, Alan L.; Ogram, Andy; Stofella, Peter J.; He, Zhenli

doi:10.1016/j.impact.2023.100480

Cited by 12 publications

(3 citation statements)

References 83 publications

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“…During coal mining activities, coal gangue sites often suffer from poor soil conditions with a limited nutrient content. Nitrogen and phosphorus fertilizer supplementation can enhance the nutrient levels in the soil, providing favorable conditions for vegetation growth (Fatimata et al, 2023;Jaya et al, 2023).…”

Section: Discussionmentioning

confidence: 99%

Responses of Soil and Vegetation Properties to Chemical Fertilization in Restoring Coal Gangue Hills in an Alpine Mining Area

Jin,

Li,

Sun

et al. 2023

Preprint

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During the coal mining operation, the accumulated soil in coal gangue hills often suffers from nutrient deficiencies, which can be overcome using fertilizer supplementation. The supplementation of exogenous nutrients has proven to be an effective means of enhancing physicochemical conditions of these soils and promoting vegetation reestablishment. This study aimed to investigate the characteristics of plant growth and soil properties in vegetation restoration to a coal gangue hill, focusing on artificially seeded grasslands in a high-altitude mining area as the research subject. Over a period of three consecutive years, varying gradients of nitrogen and phosphorus supplements were applied to the coal gangue hill. Furthermore, the interrelationships between plants and soil factors at different dosages of chemical fertilization were analyzed so as to determine the appropriate fertilization level conducive to the ecological system's restoration in the area. The results of this study revealed significant responses (P < 0.05) in vegetation height, coverage, and biomass to nitrogen and phosphorus dosage, leading to a significant increase in the availability of soil nutrients (P < 0.05). Apart from moss coverage, fertilizer dosage exhibited a significant positive correlation (P< 0.05) with various vegetation characteristics, as well as a highly significant positive correlation (P < 0.05) with soil nutrient availability. Notably, no significant differences (P > 0.05) were observed in soil physical properties with varying nitrogen and phosphorus amendments. In conclusion, nitrogen and phosphorus supplementation is beneficial for promoting vegetation growth and improving soil chemical properties in high-altitude mining areas with coal gangue hills. The recommended minimum dosage is 40g/m² of urea in combination with 30g/m² of diammonium phosphate. This supplement should be applied continuously. Considering the capacity of the mining area's ecosystem to self-repair and the costs of ecological restoration, it is advisable to utilize organic fertilizers and sheep manure in the next phase of restoration.

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Section: Discussionmentioning

confidence: 99%

Responses of Soil and Vegetation Properties to Chemical Fertilization in Restoring Coal Gangue Hills in an Alpine Mining Area

Jin,

Li,

Sun

et al. 2023

Preprint

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“…Nanonutrients can act as carriers of essential nutrients for crops and enhance nutrient use efficiency, ensuring controlled release and targeted delivery to plant roots. Carbon nanomaterials are an emerging soil amendment to enhance soil fertility in sandy soils at application rates of 200 to 400 ppm, which can increase crop biomass and improve crop physiology and soil biochemical quality by increasing soil N and K availability in soil along with crop nutrient uptake (Nepal et al 2023). Nanosilica is a promising soil stabilizer that can improve soil strength, hydraulic conductivity, and compressibility (Kannan and Sujatha 2022).…”

Section: Soil Degradation Causes and Consequencesmentioning

confidence: 99%

Soil Degradation under a Changing Climate: Management from Traditional to Nano-Approaches

El-Ramady,

Brevik,

Abowaly

et al. 2024

Egypt.J. Soil Sci.

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N THE ERA of anthropogenic climate change, soil and other compartments of the agroecosystem suffer from various forms of degradation, meaning there is an urgent need for appropriate soil management. Under arid and semi-arid conditions, the degradation of soil and water are particularly severe globally, causing a decline in agricultural productivity. Soil degradation has led to decreased soil quality, global food insecurity, ecosystem health problems, and non-sustainable development issues. Several human activities have worsened soil degradation, especially under global climate change. With growing interest in nanotechnology, can this science offer solutions/approaches to engineer soil and water amendments to overcome soil degradation and water scarcity? What are the possible nanomaterials and their mechanisms that might be used to protect the environment. This study focuses on soil degradation causes and consequences, as well as different management approaches including traditional, geographic information systems and remote sensing, and nano approaches for the management of soil degradation. Soil degradation that may be experienced after the intensive application of nanomaterials is a major concern that urgently needs to be researched. There is also a need to assess the long-term environmental impacts of nanoparticles, which may have potential for leaching and accumulation in soil from which they enter the food chain, causing many problems for human health.

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“…The results indicate that carbon nanomaterials applied at low to moderate levels are excellent carbon-based amendments. 12 In the future, nanotechnology will be one of the important tools to promote the agricultural revolution.…”

Section: Introductionmentioning

confidence: 99%

Effects of multifunctional cerium-doped carbon dots on photosynthetic capacity and nutritional quality of lettuce

Zhao,

Li,

et al. 2024

Environ. Sci.: Nano

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Carbon nanomaterials are a superior soil amendment for sandy soils than biochar based on impacts on lettuce growth, physiology and soil biochemical quality

Cited by 12 publications

References 83 publications

Responses of Soil and Vegetation Properties to Chemical Fertilization in Restoring Coal Gangue Hills in an Alpine Mining Area

Responses of Soil and Vegetation Properties to Chemical Fertilization in Restoring Coal Gangue Hills in an Alpine Mining Area

Soil Degradation under a Changing Climate: Management from Traditional to Nano-Approaches

Effects of multifunctional cerium-doped carbon dots on photosynthetic capacity and nutritional quality of lettuce

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