Advanced Technology of Agricultural Ecological Environment Restoration

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Agroecology Innovation: Achieving System Resilience".

Deadline for manuscript submissions: closed (31 October 2023) | Viewed by 6027

Special Issue Editors


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Guest Editor
Laboratory of Environmental Ecological Remediation and Planning, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: agricultural soil improvement; biochar; heavy metal stress; soil environmental chemistry; environmental contamination and remediation; agricultural solid waste resource utilization; environmental bioremediation; soil science and soil reclamation; soil amendments; soil and groundwater remediation techniques; risk assessment of contaminated sites; ecological planning; agricultural landscape planning
Special Issues, Collections and Topics in MDPI journals
Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China
Interests: metaviromes; phage therapy; virus–host interactions; antibiotic resistance genes; virus auxiliary metabolic genes
Special Issues, Collections and Topics in MDPI journals
Laboratory of Environmental Monitoring and Remediation, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Interests: environmental contamination and remediation; (advanced) oxidation processes in water and wastewater; transformation byproducts; (eco)toxicological assessment; computational studies; analysis and fate of refractory pollutants; biochar; heavy metal stress

Special Issue Information

Dear Colleagues,

The agro-ecological environment is deteriorating as a result of irrational human exploitation and use. As an example, the quality of cultivated land is declining, agricultural sewage exceeding the standard and the abuse of harmful pesticides are frequent, and are gradually extending to a global scale. Therefore, efforts to improve the health of the agro-ecological environment, reduce/repair agricultural pollution and ensure food security are urgently needed.

To date, a variety of innovative technologies for ecological enhancement and restoration have been developed and validated, including physical/chemical restoration and bioremediation, to better protect soil, water, and atmospheric environments. Moreover, with the in-depth research of environmental ecological restoration technology, the combined application of various technologies and the participation of artificial intelligence are also playing an increasingly important role in guiding the improvement of the agro-ecological environment. However, with the diversification of environmental pollution, a series of research gaps have not been filled. Therefore, we urgently need to combine the latest environmental ecological restoration problems with advanced environmental improvement technologies to develop new technologies to protect the environment.

This Special Issue focuses on the latest environmental problems and the current situation of sustainable agricultural development, and explores the latest research progress and cutting-edge innovative technologies relevant to the agricultural ecological environment, from the micro to macro level.

We welcome the submission of new research articles, reviews, and case reports to this Special Issue. Manuscripts dealing with new approaches to the application of novel remediation technologies, remediation mechanisms and influencing factors, risk assessment, and management are also welcome. 

We encourage prospective authors to submit related distinguished research manuscripts focused on the following topics (not an exhaustive list): 

  • Improvement of cultivated land quality and the elimination of obstacles;
  • Water pollution remediation and improvement technology;
  • Pollutant detection technology;
  • Functional microbial remediation technology;
  • Development of functional materials for environmental remediation;
  • Application technology of agricultural solid waste recycling;
  • Agricultural carbon fixation and emission reduction technology;
  • Biodiversity and ecosystem services.

Dr. Haoming Chen
Dr. Mao Ye
Dr. Dehua Ma
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Agronomy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • improvement of cultivated land quality
  • remediation of cultivated land pollution
  • pollutant detection
  • rural sewage disposal
  • green and sustainable remediation
  • environment pollution control
  • heavy metals
  • organic pollutants
  • emerging contaminants
  • biochar
  • crop growth safety
  • reuse of agricultural waste
  • sustainable agricultural development

Published Papers (4 papers)

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Research

10 pages, 1713 KiB  
Article
The Production of Oxalate by Aspergillus niger under Different Lead Concentrations
by Yijun Huang, Liangliang Zhang, Shijia Yuan, Wenpei Liu, Chaochun Zhang, Da Tian and Xinxin Ye
Agronomy 2023, 13(4), 1182; https://doi.org/10.3390/agronomy13041182 - 21 Apr 2023
Cited by 2 | Viewed by 1485
Abstract
In this study, using a typical acid-producing fungi, Aspergillus niger (A. niger, CGMCC 23272), we investigated the capacity of organic acid production under different lead (Pb) concentrations. A. niger has a high Pb tolerance, which can maintain the growth of hypha [...] Read more.
In this study, using a typical acid-producing fungi, Aspergillus niger (A. niger, CGMCC 23272), we investigated the capacity of organic acid production under different lead (Pb) concentrations. A. niger has a high Pb tolerance, which can maintain the growth of hypha at 1500 mg/L Pb concentration. Oxalic acid is the primary organic acid produced by A. niger. A. niger was shown to maintain the ability to produce oxalic acid under different Pb concentrations, which ranged from 522.8 to 1130.5 mg/L. The formed lead oxalate also confirmed the production of oxalic acid by A. niger. Meanwhile, the formation of lead oxalate minerals dominated the resistance of Pb toxicity by A. niger. More than 95% of Pb cations were removed by A. niger under different Pb concentrations. The high Pb toxicity (1500 mg/L) could stimulate pyruvate dehydrogenase enzyme activities, which increased from 0.05 to 0.13 nmol/min/g after three days of incubation. The low Pb toxicity (500 and 1000 mg/L) could improve the production of oxalic acid by A. niger. This indicates that the metabolism of organic acid by A. niger can be improved by a high Pb concentration via the tricarboxylic acid cycle. Full article
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13 pages, 2139 KiB  
Article
The Changes in Rhizosphere Metabolome and Microbiota Are the Main Direct Obstacles to Continuous Cropping in Tobacco (Nicotiana tabacum L.)
by Fei Yu, Yifeng Yan, Qing Dong, Chaoqiang Jiang, Chaolong Zu and Jia Shen
Agronomy 2023, 13(4), 964; https://doi.org/10.3390/agronomy13040964 - 24 Mar 2023
Cited by 2 | Viewed by 1209
Abstract
Continuous cropping obstacles (CC), typical of negative plant–soil feedback, have become a non-negligible constraint to the development of agriculture. In order to investigate the main direct drivers influencing the formation of CC soils from the rhizosphere of CC, tobacco fields were collected and [...] Read more.
Continuous cropping obstacles (CC), typical of negative plant–soil feedback, have become a non-negligible constraint to the development of agriculture. In order to investigate the main direct drivers influencing the formation of CC soils from the rhizosphere of CC, tobacco fields were collected and their physicochemical properties, microbial community, and metabolomics were measured and analyzed. We also built a mixed linear model to evaluate the impact of these factors on CC. The results suggested that the pH, available potassium (AK), and zinc (Zn) were significantly higher in CC than in normal tobacco (NOR). However, the content of available nitrogen (AN) decreased significantly. Alpha diversity of the bacterial community was significantly reduced. Bacterial community structure also varied significantly in CC. The study identified an ecological cluster with a significant negative correlation with the above-ground biomass of plants. In this cluster, the pathogenic microbiome increased and the beneficial microbiome decreased. The orthogonal partial least squares discriminant analysis (OPLS-DA) indicated clear variations in the metabolomic profiles of the rhizosphere soil between the CC and the NOR. There was an accumulation of toxic compounds and a decrease of beneficial compounds in rhizosphere soils with CC. The mixed linear model showed that only microbiome and metabolites, rather than the soil’s physicochemical properties, significantly affected plant above-ground biomass. According to the model’s standardized coefficients, metabolites contributed more to the continuous crop obstacles than the microbial community. The soil’s physicochemical properties do not directly cause the emergence of CC. The allelochemicals and microbial community are the main direct obstacles to continuous cropping in tobacco, and allelochemicals contribute more than the microbial community. Full article
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16 pages, 12563 KiB  
Article
Exploring the Influences of Water-Saving Practices on the Spatiotemporal Evolution of Groundwater Dynamics in a Large-Scale Arid District in the Yellow River Basin
by Weifeng Yue, Hangzheng Zhao, Ziyi Zan, Mengshen Guo, Fengyan Wu, Lini Zhai and Jin Wu
Agronomy 2023, 13(3), 827; https://doi.org/10.3390/agronomy13030827 - 11 Mar 2023
Cited by 2 | Viewed by 1132
Abstract
Water-saving practices (WSPs) have been recognized as an effective measure for reducing agricultural water use and alleviating regional water shortages in arid irrigation districts. However, WSPs have also reduced groundwater recharge, thereby causing the depth to groundwater table (DGT) to increase. Therefore, characterizing [...] Read more.
Water-saving practices (WSPs) have been recognized as an effective measure for reducing agricultural water use and alleviating regional water shortages in arid irrigation districts. However, WSPs have also reduced groundwater recharge, thereby causing the depth to groundwater table (DGT) to increase. Therefore, characterizing the impact of WSPs on the spatiotemporal variability in the DGT is of paramount importance for protecting limited groundwater resources. Based on monthly DGT observation data collected from 1990 to 2015 at 206 observation wells in the Hetao Irrigation District (HID), located in Northwest China with an arid climate, the spatiotemporal variations in DGT before and after the application of WSPs were analyzed using the empirical orthogonal function (EOF) method, and the major driving factors of the spatiotemporal DGT changes were also identified using comprehensive approaches. The EOF method revealed four major spatiotemporal DGT patterns both before and after WSPs were applied; these patterns explained 71.39% and 73.99% of the total variability in the HID before and after WSPs application, respectively. In addition, the main controlling factors affecting the DGT dynamics were different before and after WSPs were applied. In terms of the associations of the DGT with the impacting factors, the meteorological factors had the strongest impact on the DGT changes on the long-term scale of 64 months; however, irrigation played a leading role at the seasonal and semiannual scales, especially after WSPs application. The soil texture significantly impacted the spatial DGT patterns, particularly at depths above 150 cm. This study provides a scientific basis for the rational development of local groundwater resources and the scientific management of water-saving irrigation measures. Full article
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16 pages, 2774 KiB  
Article
Highly Efficient Adsorption Characteristics and Mechanism of Nutshell Biochars for Aromatic Organophosphorus Insecticides
by Genrong Zhang, Liancheng Fang, Zechao Cheng, Taozhong Shi, Xin Ma, Qing X. Li and Rimao Hua
Agronomy 2023, 13(2), 543; https://doi.org/10.3390/agronomy13020543 - 14 Feb 2023
Cited by 1 | Viewed by 1611
Abstract
The wide use of the insecticide profenofos in crop production has led to serious ecological water problems in agricultural fields. With the increasing global production of nuts, a large amount of nutshell waste has a serious impact on the environment. Turning nutshell waste [...] Read more.
The wide use of the insecticide profenofos in crop production has led to serious ecological water problems in agricultural fields. With the increasing global production of nuts, a large amount of nutshell waste has a serious impact on the environment. Turning nutshell waste into biochar to remove high levels of profenofos in water is a cost-effective treatment method. In this study, biochars made from nutshell waste are investigated for the adsorption of aromatic organophosphorus insecticide profenofos. The adsorption amount of nutshell biochar was 13-fold higher than crop stalk biochar in removing profenofos from water. The results indicated that the adsorption of profenofos by nutshell biochar was specific. Scanning electron microscope (SEM) and Brunauer–Emmett–Teller (BET) analysis showed that nutshell biochars had a larger specific surface area and more microporous structures. Meanwhile, nutshell biochars could exhibit a stable adsorption capacity at different initial concentrations of profenofos (10–40 mg/L), temperature (298–318 K), and pH (3–7). Desorption and reuse experiments showed that profenofos was firmly bound to nutshell biochars in water and could be extracted from the biochars with acetonitrile. Within 10 times of recycling, nutshell biochar had a stable and strong adsorption capacity for profenofos. The adsorption process of profenofos by nutshell biochar was pore diffusion and surface adsorption, which is consistent with the pseudo second-order kinetic model and the Freundlich isotherm model. Elemental and Fourier transform infrared spectroscopy (FTIR) analyses showed that the adsorption mechanism of profenofos on nutshell biochar was mainly through π-π and hydrophobic interactions. Nutshell biochar also showed strong adsorption capacity for other aromatic organophosphorus pesticides, and the adsorption rates of methyl parathion, isocarbophos and 2-chloro-4-bromophenol were 85%, 73% and 73%, respectively. Nutshell biochar can serve as an excellent material for removing aromatic organophosphorus insecticide pollution from water. Full article
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