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He H, Liu J, Shu Z, Chen Y, Pan Z, Peng C, Wang X, Zhou F, Zhou M, Du Z, Sun K, Xing B, Wang Z. Microbially Driven Iron Cycling Facilitates Organic Carbon Accrual in Decadal Biochar-Amended Soil. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024. [PMID: 38968084 DOI: 10.1021/acs.est.3c09003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/07/2024]
Abstract
Soil organic carbon (SOC) is pivotal for both agricultural activities and climate change mitigation, and biochar stands as a promising tool for bolstering SOC and curtailing soil carbon dioxide (CO2) emissions. However, the involvement of biochar in SOC dynamics and the underlying interactions among biochar, soil microbes, iron minerals, and fresh organic matter (FOM, such as plant debris) remain largely unknown, especially in agricultural soils after long-term biochar amendment. We therefore introduced FOM to soils with and without a decade-long history of biochar amendment, performed soil microcosm incubations, and evaluated carbon and iron dynamics as well as microbial properties. Biochar amendment resulted in 2-fold SOC accrual over a decade and attenuated FOM-induced CO2 emissions by approximately 11% during a 56-day incubation through diverse pathways. Notably, biochar facilitated microbially driven iron reduction and subsequent Fenton-like reactions, potentially having enhanced microbial extracellular electron transfer and the carbon use efficiency in the long run. Throughout iron cycling processes, physical protection by minerals could contribute to both microbial carbon accumulation and plant debris preservation, alongside direct adsorption and occlusion of SOC by biochar particles. Furthermore, soil slurry experiments, with sterilization and ferrous iron stimulation controls, confirmed the role of microbes in hydroxyl radical generation and biotic carbon sequestration in biochar-amended soils. Overall, our study sheds light on the intricate biotic and abiotic mechanisms governing carbon dynamics in long-term biochar-amended upland soils.
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Affiliation(s)
- Haohua He
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Jie Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Zhipeng Shu
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Yalan Chen
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Zezhen Pan
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
- National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Eco-Chongming, Shanghai 200062, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200433, China
| | - Chao Peng
- College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China
| | - Xingxing Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Fengwu Zhou
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Ming Zhou
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Zhangliu Du
- Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Ke Sun
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Baoshan Xing
- Stockbridge School of Agriculture, University of Massachusetts, Amherst, Massachusetts 01003, United States
| | - Zimeng Wang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
- National Observations and Research Station for Wetland Ecosystems of the Yangtze Estuary, Institute of Eco-Chongming, Shanghai 200062, China
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200433, China
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Wang Y, Yin Y, Joseph S, Flury M, Wang X, Tahery S, Li B, Shang J. Stabilization of organic carbon in top- and subsoil by biochar application into calcareous farmland. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:168046. [PMID: 37890636 DOI: 10.1016/j.scitotenv.2023.168046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 10/04/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023]
Abstract
Biochar is recognized for its role in carbon sequestration and emission mitigation in farmland topsoil. However, the mechanisms by which biochar affects soil organic carbon (SOC), its composition, and stability, in the topsoil (0-20 cm) and subsoil (140-160 cm) remain unclear. Applying biochar to the calcareous farmland topsoil significantly increased the topsoil SOC contents by 33 % after a decade, with a 5 % increase in dissolved organic carbon (DOC) contents (topsoil) and a substantial increase of 162 % in subsoil DOC contents. Additionally, humic substances showed an increase of 24 % (topsoil), while low-molecular-weight water-extracted DOC exhibited a remarkable increase of 142 % in the subsoil. The application of biochar significantly increases the contents of SOC, DOC, and microbial biomass carbon (MBC) in the topsoil, as well as SOC and DOC contents in the subsoil. However, a slight decrease is observed for MBC content in the subsoil. Biochar-amended soil significantly suppressed enzyme activity in the topsoil and decreased α diversity in topsoil and subsoil while increasing the content of mineral-associated soil organic matter (MAOM). These observed changes are conducive to stabilizing SOC, emphasizing MAOM formation as a primary mechanism for carbon sequestration in both topsoil and subsoils. This study provides evidence that biochar contributes to the long-term organic carbon sequestration in calcareous farmland, highlighting the importance of considering both topsoil and subsoil when evaluating the dynamic impacts of biochar on SOC.
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Affiliation(s)
- Yang Wang
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture, Beijing 100193, China
| | - Yingjie Yin
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture, Beijing 100193, China
| | - Stephen Joseph
- School of Materials Science and Engineering, University of New South Wales (NSW), Sydney, NSW 2052, Australia
| | - Markus Flury
- Department of Crop and Soil Sciences, Washington State University, Puyallup, Washington 98371, United States; Department of Crop and Soil Sciences, Washington States University, Pullman, Washington 99164, United States
| | - Xiang Wang
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture, Beijing 100193, China
| | - Sara Tahery
- School of Materials Science and Engineering, University of New South Wales (NSW), Sydney, NSW 2052, Australia
| | - Baoguo Li
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture, Beijing 100193, China
| | - Jianying Shang
- College of Land Science and Technology, China Agricultural University, Key Laboratory of Arable Land Conservation (North China), Ministry of Agriculture, Beijing 100193, China.
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Khan MA, Salman AZ, Khan ST. Indigenously produced biochar retains fertility in sandy soil through unique microbial diversity sustenance: a step toward the circular economy. Front Microbiol 2023; 14:1158784. [PMID: 37440878 PMCID: PMC10335804 DOI: 10.3389/fmicb.2023.1158784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 06/05/2023] [Indexed: 07/15/2023] Open
Abstract
Introduction Agricultural productivity in the arid hot desert climate of UAE is limited by the unavailability of water, high temperature, and salt stresses. Growing enough food under abiotic stresses and decreasing reliance on imports in an era of global warming are a challenge. Biochar with high water and nutrient retention capacity and acid neutralization activity is an attractive soil conditioner. This study investigates the microbial community in the arid soil of Dubai under shade house conditions irrigated with saline water and the shift in the microbial community, following 1 year of amendment with indigenously prepared biochar from date palm waste. Methods Amplicon sequencing was used to elucidate changes in bacterial, archaeal, and fungal community structures in response to long-term biochar amendment. Samples were collected from quinoa fields receiving standard NPK doses and from fields receiving 20 and 30 tons ha-1 of biochar, in addition to NPK for 1 year. Water holding capacity, pH, electrical conductivity, calcium, magnesium, chloride, potassium, sodium, phosphorus, total carbon, organic matter, and total nitrogen in the soil from biochar-treated and untreated controls were determined. Results and discussion The results show that soil amendment with biochar helps retain archaeal and bacterial diversity. Analysis of differentially abundant bacterial and fungal genera indicates enrichment of plant growth-promoting microorganisms. Interestingly, many of the abundant genera are known to tolerate salt stress, and some observed genera were of marine origin. Biochar application improved the mineral status and organic matter content of the soil. Various physicochemical properties of soil receiving 30 tons ha-1 of biochar improved significantly over the control soil. This study strongly suggests that biochar helps retain soil fertility through the enrichment of plant growth-promoting microorganisms.
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Affiliation(s)
- Munawwar Ali Khan
- Department of Life and Environmental Sciences, College of Natural and Health Sciences, Zayed University, Dubai, United Arab Emirates
| | - Alsayeda Zahra Salman
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | - Shams Tabrez Khan
- Department of Agricultural Microbiology, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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SanClements MD, Record S, Rose KC, Donnelly A, Chong SS, Duffy K, Hallmark A, Heffernan JB, Liu J, Mitchell JJ, Moore DJP, Naithani K, O'Reilly CM, Sokol ER, Stack Whitney K, Weintraub‐Leff SR, Yang D. People, infrastructure, and data: A pathway to an inclusive and diverse ecological network of networks. Ecosphere 2022. [DOI: 10.1002/ecs2.4262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
| | - Sydne Record
- Department of Wildlife, Fisheries, and Conservation Biology University of Maine Orono Maine USA
| | - Kevin C. Rose
- Department of Biological Sciences Rensselaer Polytechnic Institute Troy New York USA
| | - Alison Donnelly
- Department of Geography University of Wisconsin‐Milwaukee Milwaukee Wisconsin USA
| | - Steven S. Chong
- University of California Berkeley Library University of California Berkeley California USA
| | - Katharyn Duffy
- School of Informatics, Computing and Cyber Systems Northern Arizona University Flagstaff Arizona USA
| | - Alesia Hallmark
- National Ecological Observatory Network Battelle Boulder Colorado USA
| | - James B. Heffernan
- Nicholas School of the Environment Duke University Durham North Carolina USA
| | - Jianguo Liu
- Center for Systems Integration and Sustainability, Department of Fisheries and Wildlife Michigan State University East Lansing Michigan USA
| | | | - David J. P. Moore
- School of Natural Resources and the Environment University of Arizona Tucson Arizona USA
| | - Kusum Naithani
- Department of Biological Sciences University of Arkansas Fayetteville Arkansas USA
| | - Catherine M. O'Reilly
- Department of Geography, Geology, and the Environment Illinois State University Normal Illinois USA
| | - Eric R. Sokol
- National Ecological Observatory Network Battelle Boulder Colorado USA
| | - Kaitlin Stack Whitney
- Science, Technology & Society Department Rochester Institute of Technology Rochester New York USA
| | | | - Di Yang
- Wyoming Geographic Information Science Center University of Wyoming Laramie Wyoming USA
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Zhang S, Fang Y, Luo Y, Li Y, Ge T, Wang Y, Wang H, Yu B, Song X, Chen J, Zhou J, Li Y, Chang SX. Linking soil carbon availability, microbial community composition and enzyme activities to organic carbon mineralization of a bamboo forest soil amended with pyrogenic and fresh organic matter. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 801:149717. [PMID: 34425443 DOI: 10.1016/j.scitotenv.2021.149717] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/11/2021] [Accepted: 08/13/2021] [Indexed: 05/21/2023]
Abstract
Despite fresh and pyrogenic organic matter have been widely used as amendments to improve soil organic carbon (SOC) storage, mineralization that links to C quality and soil temperature, microbial community composition and enzyme activity remain poorly understood. This study aims to explore the effects of amendments (bamboo leaves and its biochar) and incubation temperature on mineralization, and disentangle the relationships of SOC mineralization with chemical composition of SOC, labile organic C, microbial community composition, and activities of enzymes in a subtropical bamboo forest soil. Results showed that cumulative soil CO2 emissions ranked as bamboo leaf (Leaf) > bamboo leaf biochar (Biochar) > Control, regardless of the incubation temperature. Compared to the control, the Leaf treatment markedly increased, whereas the Biochar treatment decreased, the temperature sensitivity of SOC mineralization (P < 0.05). The cumulative soil CO2 emission was positively correlated (P < 0.05) with water-soluble organic C (WSOC), microbial biomass C (MBC), O-alkyl C and alkyl C contents, and activities of β-glucosidase and dehydrogenase, but negatively correlated (P < 0.01) with aromatic C content, regardless of the incubation temperature. This indicated that the lower SOC mineralization rate and lower temperature sensitivity in the Biochar (cf. Leaf) treatment were intimately associated with the lower WSOC, MBC, O-alkyl C content, and β-glucosidase and dehydrogenase activities, and higher aromatic C content in the Biochar. The high relative abundance of bacteria relating SOC mineralization included Rhizobiales, Sphingobacteriales and JG30-KF-AS9, whereas that of fungi included Eurotiales, Sordariales, Agaricales and Helotiales. Our results revealed that the application of pyrogenic organic matter, as compared to the application of fresh organic matter, can reduce SOC mineralization and its temperature sensitivity in a subtropical forest soil by limiting the availability of C and microbial activity, and thus has a great potential for maintaining soil carbon stock in subtropical forest ecosystems.
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Affiliation(s)
- Shaobo Zhang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Yunying Fang
- Elizabeth Macarthur Agricultural Institute, NSW Department of Primary Industries, Menangle, NSW 2568, Australia
| | - Yu Luo
- College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Yongchun Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Tida Ge
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China
| | - Yixiang Wang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Hailong Wang
- School of Environment and Chemical Engineering, Foshan University, Foshan 528000, China
| | - Bing Yu
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Xinzhang Song
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Junhui Chen
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Jiashu Zhou
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China
| | - Yongfu Li
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China.
| | - Scott X Chang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou 311300, China; Department of Renewable Resources, University of Alberta, 442 Earth Sciences Building, Edmonton, AB T6G 2E3, Canada
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