Jianming xu

Jianming xu
Harbin Institute of Technology | HIT · Department of Municipal Engineering

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444
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Publications

Publications (444)
Article
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Correction to: ISME Communications https://doi.org/10.1038/ s43705-021-00068-2, published online 9 December 2021 The “CH4 emissions” should be “CH4 uptake” in the sentence of “Grazing significantly decreases CH4 emissions while it increases N2O emissions basing on 14-month in situ measurement” The correct sentence should be read: Grazing significan...
Article
Biochar plays an important role in soil carbon (C) sequestration, while the effectiveness of sequestration is mostly determined by microbial preferences to utilize the different biochar components (i.e. labile substances or fused aromatic backbone). Thus, it is important to investigate the responses of the bacterial community and specific taxa, and...
Article
Heavy metal remediation agents have been widely used in contaminated soils, but the remediation effects on heavy metals in soil aggregates and the effects on the structure and function of the microbial communities in aggregates have rarely been reported. Here, sodium silicate, sepiolite, quicklime and monocalcium phosphate were added to soil contam...
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While seed coating with fungicide is commonly used to control diseases in conventional soybean culture, the impact of fungicide seed coating on root‐associated microbial communities remains largely understudied. This hinders our assessment of the potential ecological and environmental risk of fungicide seed coating and our ability to improve plant...
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Heavy metal contamination and low use efficiency of phosphorus (P) fertilizers are worldwide issues. Alkaline lignin is expected to decrease the heavy metal risk and enhance the P availability in heavy-metal-contaminated soils. A 120-day incubation study examined the effects of alkaline lignin on Cd, Pb and P bioavailability and transformation in C...
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Methane (CH4) is an important trace greenhouse gas and atmospheric CH4 uptake by high-affinity methanotrophs in grassland soil accounts for an important proportion of the terrestrial CH4 sink. However, our understanding of the comprehensive effects of grassland type and grazing treatment on active soil methanotrophs and atmospheric CH4 uptake is st...
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Many organic materials have been used to decrease heavy-metal bioavailability in soil via in-situ remediation due to its high efficiency and easy operation; meanwhile, cheap materials have also been pursued to decrease the cost of remediation. Agricultural wastes exhibit their potential in remediation materials due to their low cost; however, raw a...
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Soil microbial community rhythms are a foundational mechanism that underpins soil microbial ecological processes, but evidence of endogenous circadian rhythms in these communities which are regulated by microbial molecular oscillations is lacking. In this study we used soil total and potentially active microbial communities to explore endogenous ci...
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Contaminated sites are receiving more and more attention internationally because they pose a serious threat to the ecological environment and human health. Although the research focused on heavy metals pollution in the soil of contaminated sites has been rapidly developing over the past two decades, systematic research status analysis and pollution...
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The terrestrial environment is both a critical source and sink for microplastics (MPs). However, further efforts into the risk assessment, management, and mitigation activities of MPs in the terrestrial environment were limited by the scant data on their occurrence. In this study, we investigated the co-occurrence and correlations of light MPs and...
Article
Cadmium (Cd) and lead (Pb) are two of the most common elements found in contaminated sites. The behavior of specific metals in the soil may be affected by other metals because of the competition for adsorption sites. In this study, adsorption experiments after chemical extraction, multi-surface models, and advanced spectroscopy technology were join...
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Biochar affects soil carbon (C) dynamics via shifting microbial community, but the active bacteria that regulate the rhizosphere-based C cycling remain to be identified. Here, a continuous 13CO2 labeling pot (Zea mays L.) experiment over 14 days, combined with RNA-based stable isotope probing (RNA-SIP), were used to characterize the active bacteria...
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Amendment of soil with biochar induces a shift in microbial community structure and promotes faster mineralization of soil organic carbon (SOC), thus offsetting C sequestration effects. Whether biochar induces losses of labile or persistent SOC pools remains largely unknown, and the responsible decomposers await identification. Towards addressing t...
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Diverse host factors drive microbial variation in plant‐associated environments, whereas their genetic mechanisms remain largely unexplored. To address this, we coupled the analyses of plant genetics and microbiomes in this study. Using 100 tea plant (Camellia sinensis) cultivars, the microbiomes of rhizosphere, root endosphere and phyllosphere sho...
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Farm size affects nitrogen fertilizer input and agricultural practices, which are key determinants of ammonia (NH3) emissions from croplands. However, the degree to which NH3 emissions are associated with changes in farm size is not well understood yet despite its crucial role in achieving agricultural sustainability in China, where agricultural pr...
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The Jiangzhe Area was relatively common area that rely on industrial process for rapid development with serious heavy metals contamination. This study investigated the spatial, vertical and speciation distribution, correlation of heavy metals, as well as assessed pollution and health risks in three representative contamination industries at Jingjia...
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Wetlands are a key hub for the accumulation of microplastics (MPs) and have great load capacity to organic pollutants (OPs), thus, have been a hot research topic. It has shown that OPs adsorbed on MPs could be transported to anywhere and MP-associated biofilms also affects the co-occurrence of MPs and OPs. This would induce the desorption of MP-car...
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Soil contamination with multiple heavy metals poses threats to human health and ecosystem functioning. Using the Nemerow pollution index, which considers the effects of multiple heavy metals, we compared the diversity and composition of bacteria, fungi and protists and their potential interactions in response to a multi-metal contamination gradient...
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Biochars are widely used in the remediation of Cd-contaminated soils. However, changes in the bacterial communities in the rhizosphere contaminated with Cd in response to biochar aging are poorly studied. Addressing this gap in knowledge is important to improving micro-ecological services on healthy growth of plants with mitigation strategies again...
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The study of potentially toxic element (PTE) hazards around e-waste recycling areas has attracted increasing attention but does not consider elemental bioaccessibility. Here, the respiratory and oral bioaccessibilities were incorporated into probabilistic health risk evaluation and source contribution apportionment. The results showed that soil Cd...
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Root exudates are crucial for plants returning organic matter to soils, which is assumed to be a major source of carbon for the soil microbial community. This study investigated the influence of root exudates on the fate of arsenic (As) with a lab simulation experiment. Our findings suggested that root exudates had a dose effect on the soil physico...
Preprint
Arsenic (As) is the most ubiquitous toxic metalloid in nature. Microbe mediated As metabolism plays an important role in the global As biogeochemical processes, greatly changing its toxicity and bioavailability. While metagenomic sequencing may advance our understanding of the As metabolism capacity of microbial communities in different environment...
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Soil washing is considered a highly efficient technology due to its higher removal rate of multiple heavy metals from contaminated soil. However, previous studies on Cd, Pb and As washing agents for soils with complex contaminations did not consider the differences in As and Cd/Pb properties, resulting in the lack of effective washing compounds and...
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Introduction Assembly and co-occurrence of the host co-evolved microbiota are essential ecological and evolutionary processes, which is not only crucial for managing individual plant fitness but also ecological function. However, understanding of the microbiome assembly and co-occurrence in higher plants is not well understood. The tea plant was sh...
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Atrazine has a detrimental effect on soybean growth in corn-soybean rotation systems. A knowledge gap exists regarding how rhizosphere microbial interactions respond to atrazine stress, and specifically, whether they may alleviate the detriment of atrazine on soybeans, this serving as a target to alleviate the adverse impact. Biochar are widely use...
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Purpose It is unknown how the Cd-mediated changes in the rhizospheric nitrifier community affect plant growth under different water management practices. This study examined the effect of Cd on microbial N transformation and its association with rice growth in two water regimes, continuous flooding (CF) and alternate wetting and drying (AWD), in a...
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Purpose Elevated CO2 contributes greatly to global warming, playing a pivotal role in terrestrial ecosystem processes, in particular microbially regulated C and N cycling. However, the responses of microbial C and N anabolic and metabolic processes to elevated CO2 are unclear. Methods This study used a meta-analysis based on a global dataset (i.e....
Preprint
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Rapidly demographic aging substantially affects socioeconomic development 1-4, presents grand challenges for food security and agricultural sustainability 5-8, which have so far not been well understood. Here, by using over 30,000 households survey across China, we show that rural population aging lowers average education level of farmers by 3% (0-...
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Cadmium (Cd) and Arsenic (As) in rice grains are a primary exposure source for human beings. However, the simultaneous stabilization of Cd and As in soil becomes difficult due to the opposite properties of those. In this study, we investigated the simultaneous effects of biochar-supported nanoscale zero-valent iron (nZVI-BC) and water management on...
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Root-microbiome interactions are of central importance for plant performance and yield. A distinctive feature of legumes is that they engage in symbiosis with N 2-fixing rhizobia. If and how the rhizobial symbiotic capacity modulates root-associated microbiomes are still not yet well understood. We determined root-associated microbiomes of soybean...
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The occurrence and risks of pesticides and their transformation products in soil at the manufacturing sites are “known unknowns.” In this study, pesticides and their transformation products were screened in soil at 6 pesticide manufacturing sites across China using liquid and gas chromatography coupled with quadrupole time-of-flight mass spectromet...
Article
Inputs of decomposable organic materials into soil alter the decomposition of soil organic matter, a process generally called soil priming effect. Organic C inputs in terrestrial ecosystems are commonly from various sources (e.g. rhizodeposits, plant residues) simultaneously, but their interactions as well as mutual effects on SOM decomposition are...
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The integrated analysis of the distribution characteristics, health risks, and source identification of heavy metals is crucial for formulating prevention and control strategies for soil contamination. In this study, the area around an abandoned electronic waste dismantling center in China was selected as the research area. The probabilistic health...
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Grassland soils serve as a biological sink and source of the potent greenhouse gases (GHG) methane (CH4) and nitrous oxide (N2O). The underlying mechanisms responsible for those GHG emissions, specifically, the relationships between methane- and ammonia-oxidizing microorganisms in grazed grassland soils are still poorly understood. Here, we charact...
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China’s agricultural sector is dominated by smallholder farms, which mostly exhibit relatively low nutrient use efficiency, low agricultural income and substantial non-point-source pollution. Here we assess the spatial feasibility and cost-effectiveness of agricultural land consolidation in China by integrating data from over 40,000 rural surveys,...
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Soil amendments have been extensively used to remediate heavy metal contaminated soils by immobilizing or altering edaphic properties to reduce the bioavailability of heavy metals. However, the potential influences of long-term soil amendments applications on microbial communities and polluted soil health are still in its infancy despite that have...
Preprint
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Maintaining food production while reducing agricultural pollution is a grand challenge under the threats of global climate change, which has exerted negative impacts on agricultural sustainability. How agricultural nitrogen use and loss respond to climate change is rarely understood. Here we show that climate change leads to inequality of cropland...
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Little things matter Particulate air pollution 2.5 micrometers or smaller in size (PM2.5) is a major cause of human mortality, and controlling its production is a health policy priority. Nitrogen oxides are an important precursor of PM2.5 and have been a focus of pollution control programs. However, Gu et al . now show that abating ammonia emission...
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Carbon (C) additions to soil interact through chemical and microbiological processes to cause changes in soil phosphorus (P) availability. However, the response of soil P transformations and relevant microbial communities to C additions having different degrees of recalcitrance remains uncertain. We studied the effects of glucose, hemicellulose and...
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Heavy metal (HM) contamination of plastic-shed vegetable production (PSVP) areas is a great concern in China because of severe soil quality deterioration and the risk of HM accumulation in vegetables. However, the national pollution status and corresponding health risks of HM pollution in Chinese PSVP soils and vegetables are unknown. In this study...
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Significance This study demonstrates that the protective effects of multifunctional maize secondary metabolites against a major pest are dependent on soil chemical composition. By functioning as both digestibility reducers and siderophores, benzoxazinoids link soil chemistry to plant–environment interactions. Given that many plant secondary metabol...
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Wildfire plays an important role in restructuring bacterial and protist taxonomic and functional communities in forest ecosystems. Yet, the recovery of bacterial and protist communities following wildfire has not been rigorously investigated across long-term wildfire chronosequences. We compared changes in bacterial and protist alpha diversity, com...
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Organic carbon (C) is often applied to agricultural soils to increase soil organic matter, however, its mechanistic effects on soil P transformations and availability resulting from stimulation of microbial activities and changes in microbial communities remain uncertain. This study investigated the responses of soil P availability, P fractions and...
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In this study, N/B co-doped biochars were employed as metal-free activators of peroxydisulfate (PDS) for tetracycline degradation, more importantly, the roles of dopants and the relative contribution of radical vs nonradical oxidations were comprehensively investigated. Integrating with electron paramagnetic resonance and kinetics calculations, we...
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This study examined the effect of tetracycline addition on arsenic (As) mobilization and biotransformation in two contrasting soils (upland soil and paddy soil) under flooded conditions. The soils with added tetracycline (0–50 mg kg⁻¹) were incubated for 30 days and soil properties and microbial functional genes over time were quantified. Tetracycl...
Article
Methane (CH4) is one of the most important greenhouse gases which can be formed by methanogens and oxidized by methanotrophs, as well as ammonia oxidizers. Agricultural soils can be both a source and sink for atmospheric CH4. However, it is unclear how climate change, will affect CH4 emissions and the underlying functional guilds. In this field stu...
Article
Fertilizer overuse by smallholder farmers is widespread in China, leading to significant financial losses and threatening the environment. Understanding what mechanism behind this is critical for agricultural and environmental sustainability. By using a fixed effect panel model of over 20,000 rural households in China from 1995 to 2016, we found th...
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Veterinary antibiotics in agricultural soil are a growing concern, as they pose risks to soil quality and food safety. An analysis approach that covers a broad spectrum of target substances and has low detection limits is required for a comprehensive risk assessment. In this study, we developed a method for simultaneously analyzing 34 antibiotics (...
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Goethite is known to contribute to the co-precipitation of rhizodeposits and thus benefit carbon (C) sequestration, while arbuscular mycorrhizal fungi (AMF) play significant role in soil organic C (SOC), however, the combined effect is less known. To address this paucity in knowledge, we compared the physicochemical stabilization and microbial mine...
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Unique spatial niches created by biochar form a dynamic biogeochemical soil zone, termed the “charosphere”. Charosphere soil has different properties from either soil or biochar, often acting as a hotspot for microbial activity. However, the direction and magnitude of charosphere effects on soil processes and microbial communities remain inconclusi...
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Wildfire has profound and pervasive consequences for forest ecosystems via directly altering soil physicochemical properties and modulating microbial community. In this study, we examined the changes in soil properties and microbial community composition and structure at different periods after highly severe wildfire events (44 plots, 113 samples)...
Preprint
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Cropland is one of the major sources of global nitrogen pollution1, 2. Mitigating nitrogen pollution from global croplands is a grand challenge because of the nature of non-point source pollution from millions of farms and the lack of financial resources and scientific knowledge of farmers3. Here we synthesize 683 studies worldwide and identify 11...
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The effectiveness of Biodiesel Co-Product (BCP) in decreasing N leaching from an acidic soil (pH 3.7) and effects on greenhouse gas emissions and N functional genes following surface application (0-6-cm depth) of 4.5 mg BCP-C g−1 soil and complete mixing (0-18-cm depth) of 1.5 mg BCP-C g −1 soil, was investigated in a 35-day laboratory lysimeter ex...
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PurposeThe study aimed to determine the interactive effect of temperature with nutrients on maize residues decomposition in soil.Materials and methodsWe conducted an incubation of 87 days by applying maize straw (δ13C value of −11.2‰) to soil (δ13C value of −26.3‰) with low (N0), medium (NM), and high (NH) level of nutrients addition, at two temper...
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The wish for rapid degradation of chlorinated organic pollutants along with the increase concern with respect to greenhouse effect and bioenergy methane production have created urgent needs to explore synchronous regulation approach. Microbial electrolysis cell was established under four degressive cathode potential settings (from -0.15V to -0.60V)...
Article
Ammonia (NH3) volatilization is one of the main pathways of nitrogen loss from cropland, resulting not only in economic losses, but also environmental and human health impacts. The magnitude and timing of NH3 emissions from cropland fertilizer application highly depends on agricultural practices, climate and soil factors, which previous studies hav...
Article
Simultaneous stabilization of cadmium (Cd) and arsenic (As) in co-contaminated soil is challenging in environmental remediation because of their opposite properties. In this study, biochar-supported nanoscale zero-valent iron (nZVI-BC) was designed for simultaneously decreasing the soil availability of Cd and As and their bioaccumulation in vegetab...
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Human activities have increased reactive nitrogen (Nr) input to terrestrial ecosystems compared to the preindustrial era. However, the fate of such Nr input remains uncertain, leading to missing sink of global nitrogen budget. By synthesizing records of Nr burial in sediments from 303 lakes worldwide, here we show that 9.6 ± 1.1 Tg N yr-1 (Tg = 101...
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The effects of biochar aging on heavy-metal bioavailability and microbial activity are not fully understood. This study determined the effect over 270 days of poultry-litter biochar (PBC) and sugar-gum-wood biochar (SBC) on the bioavailability of Cd and microbial activity in acidic soils differing in organic matter content. Soil basal and substrate...
Article
The differing chemical properties of arsenic (As) and cadmium (Cd) make co-remediation in soil systems a major challenge. This study aimed to gain a mechanistic understanding of how two contrasting biochars (poultry litter and sugar-gum wood) impacted the potential bioavailability of As and Cd in soil matrix varying in initial pH (4.6, 5.7, 6.4, 7....