Article
Agronomy
Bei Wu, Xiangtian Meng, Huaiying Yao, Wulf Amelung
Summary: Prolonged paddy management alters the Fe isotope composition of soil and rice plants, indicating the origin of rice plants and the extent of past soil paddy management. The study found that prolonged paddy management reduces Fe concentrations in the topsoil, leading to an enrichment of heavy Fe isotopes. The Fe content in rice also increases with paddy age, while its Fe isotope composition resembles that of the Fe plaques on the roots rather than paddy soil.
Article
Geosciences, Multidisciplinary
Jinhua Pan, Jin Wang, Shunyao Zhuang
Summary: In coastal areas of China, the conversion of tidal flats into paddy fields and prolonged rice cultivation activities have significant effects on soil amino acid nitrogen (AAN) contents and N cycling. This study collected paddy soil samples from different cultivation durations (50 to 700 years) and found that AAN accumulates under long-term rice cultivation, and its accumulation is closely related to soil properties. However, AAN accumulation is limited to 300 years, indicating potential effects on the stability of soil N cycling and sustainable N-use under long-term rice cultivation.
Article
Soil Science
Yuan -Jun Luo, Lai -Ming Huang, Da -Gang Yuan
Summary: This study reveals the characteristics and controls of inorganic and organic phosphorus (P) transformation during paddy soil evolution over a millennial time scale. Results show that long-term paddy cultivation alters the rate and trajectory of P transformation in the topsoils, highlighting the importance of labile organic P activation for nutrient supply in the older paddy soils.
SOIL & TILLAGE RESEARCH
(2022)
Article
Soil Science
Dan Huang, Xinyu Zhu, Baile Xu, Yan He, Mingkui Zhang, Fei Liu, Zhenghua Lian, Randy A. Dahlgren, Philip C. Brookes, Jianming Xu
Summary: Systematic studies on natural nanoparticles in soil are limited, but this study on a soil chronosequence in eastern China shows that the NNP content increases with soil cultivation age and the most important factor affecting NNP properties is the soil cultivation age itself, accounting for 60.7% of the total variation. Cluster and principal component analysis revealed a split in NNP samples into age groups, indicating a rapid evolution of NNP properties after an initial period of desalinization.
Article
Agriculture, Multidisciplinary
Jun Wang, Lu Lv, Ronggui Hu, Haiyang Ma, Bo Liu, Wenju Zhang, Lei Wu
Summary: Nitrification and denitrification are crucial for nitrogen losses in agricultural soils and are affected by soil properties. This study investigated the patterns and controlling factors of nitrification and denitrification potentials in paddy soils in major rice-producing areas of Hubei Province, China. The results showed that soil pH and SOC were the primary factors regulating nitrification and denitrification potentials, respectively.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2024)
Article
Agronomy
Xing Yu, Xu Tao, Jun Liao, Sicheng Liu, Le Xu, Shen Yuan, Zuolin Zhang, Fei Wang, Nanyan Deng, Jianliang Huang, Shaobing Peng
Summary: Ratoon rice (RR) is more efficient and sustainable than single-season rice (SR) and double-season rice (DR), with enormous potential to expand its cultivation area in China for increasing rice production. The suitable cultivation region and paddy area for RR were estimated using the Maxent model, showing significant differences in potential areas compared to DR, indicating opportunities for growth in RR cultivation without reducing current DR planting area.
FIELD CROPS RESEARCH
(2022)
Article
Environmental Sciences
Luyao Qin, Meng Wang, Xiaoyi Sun, Lei Yu, Jing Wang, Yun Han, Shibao Chen
Summary: Ferrihydrite (Fh) in paddy soil undergoes phase transition during dynamic redox conditions, affecting Cd distribution and isotope fractionation. Rice culture experiments were conducted with or without Fh application under different irrigation regimes to study the relationship between Fe species, Cd availability, and Cd isotope ratios. Fh addition under flooding conditions promoted the formation of amorphous Fe oxides and increased Cd immobilization. Heavy Cd isotopes were enriched in the liquid phase and light Cd isotopes in Fe/Mn (oxy)hydroxides. The expression of transporters involved in Cd transport in rice was suppressed under low pe + pH conditions. These findings demonstrate that low pe + pH facilitates Cd stabilization by the presence of amorphous iron oxides, leading to the enrichment of heavy Cd isotopes in the liquid phase and light Cd isotopes in Fe/Mn (oxy)hydroxides.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Juhee Lee, Seongwoo Choi, Yeomyeong Lee, Sang Yoon Kim
Summary: Livestock manure application significantly increased NH3 volatilization rates, especially during the initial and additional fertilization stages in rice cultivation. Swine manure exhibited much higher volatilization rates than cattle manure, attributed to its higher labile NH4+ concentration and urease activity. NH3 emission rates proportionally increased with application levels in swine manure, but not in cattle manure.
ENVIRONMENTAL POLLUTION
(2021)
Article
Food Science & Technology
Esra Ersoy Omeroglu, Asli Bayer, Mert Sudagidan, Veli Cengiz Ozalp, Ihsan Yasa
Summary: Access to safe food is a pressing issue, with a focus on rice due to potential health concerns related to high levels of arsenic. This study investigated the amounts of arsenic in water and soil used in rice development, changes in gene expression, and the diversity of dominant microbiota. Results showed that rice grain and husk samples had the highest arsenic accumulation in areas where groundwater was used, while samples from the stream had the lowest levels. Arsenic accumulated in different parts of the rice plant as development progressed.
Article
Green & Sustainable Science & Technology
Mengyang Wu, Xinchun Cao, Xiangping Guo, Jianfeng Xiao, Jie Ren
Summary: The study found that changes in irrigation and drainage methods in Nanjing, China can regulate and reduce the grey water footprint. In East China, rain-catching and controlled irrigation (RCCI) was identified as the best policy for managing field water in paddy production, effectively reducing the grey water footprint.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Agronomy
Nirajan Luintel, Weiqiang Ma, Yaoming Ma, Binbin Wang, Jie Xu, Binod Dawadi, Bhogendra Mishra
Summary: This study investigated the spatial and temporal variation of rice cultivation in Nepal between 2003 and 2018 using MODIS data and the PhenoRice algorithm. The results showed that rice cultivation is concentrated in the low elevation belt in the south, with differences in cultivation timing between regions. Over the past decade, there has been a significant decrease in rice cultivated area, particularly in the eastern plains, while expanding in the mid-hills in the western region.
AGRICULTURAL AND FOREST METEOROLOGY
(2021)
Article
Geography, Physical
Xiuming Liu, Xuegang Mao
Summary: The magnetic susceptibility records of loess-palaeosol sequences on the Chinese Loess Plateau can be used for paleoclimatic reconstructions, but the interpretations in different environments are still debated. A model comprising three cases is proposed to interpret the magnetic susceptibility of loess-palaeosol sequences in diverse environments.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Soil Science
Chaoqun Wang, Lukas Thielemann, Michaela A. Dippold, Georg Guggenberger, Yakov Kuzyakov, Callum C. Banfield, Tida Ge, Stephanie Guenther, Maxim Dorodnikov
Summary: Changes in rice root morphology reflect the decrease in phosphorus (P) deficiency after the dissolution of ferric iron (Fe(III))-bound phosphate (Fe-P) in low-redox paddy soils. A new in-situ 32P phosphor-imaging approach was developed to estimate P uptake by rice roots released from Fe-P dissolution. Direct root access to Fe-P increased rice crown roots elongation, branching, and P accessibility under P deficiency.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Engineering, Environmental
Yu Zeng, Guodong Fang, Qinglong Fu, Dionysios D. Dionysiou, Xiaolei Wang, Juan Gao, Dongmei Zhou, Yujun Wang
Summary: This study investigated the photochemical processes in paddy water, identifying DOM-D-3*, O-1(2), and OH· as the main reactive intermediates with quantified quantum yields and steady-state concentrations. The findings demonstrated that DOM properties and nitrite concentration were key factors influencing RIs generation, and RIs significantly enhanced arsenite oxidation in paddy water. The study provides new insights into arsenite abiotic transformation pathways in paddy soil and water.
Article
Soil Science
Lulu Zhao, Qian Fang, Hanlie Hong, Thomas J. Algeo, Anhuai Lu, Ke Yin, Chaowen Wang, Chen Liu, Li Chen, Shucheng Xie
Summary: By investigating soil samples from four loess chronosequences representing different climatic zones of China using spectral and chemical data, loess-derived soils were successfully discriminated and key properties related to pedogenic weathering were analyzed. The results indicate that sensor fusion approach provides more accurate and robust predictions in soil investigations.
Article
Soil Science
Vincent J. M. N. L. Felde, Steffen A. Schweizer, Danh Biesgen, Angela Ulbrich, Daniel Uteau, Claudia Knief, Markus Graf-Rosenfellner, Ingrid Koegel-Knabner, Stephan Peth
Summary: Different methods of isolating soil microaggregates were compared in terms of mechanical stability, organic carbon contents, and microbial community composition. Dry crushing method showed higher stability and bacterial diversity compared to wet sieving, with a stronger correlation between bacterial community composition and clay content.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Soil Science
Ingrid Koegel-Knabner, Wulf Amelung
Summary: This passage summarizes the accumulation process of soil organic matter (SOM) in different soil groups and their main influencing factors, emphasizing the effects of climate, pedogenesis, and different types of soils on the composition and properties of OM. The contribution of different soil groups to global organic carbon stocks varies, highlighting the importance of considering the pedogenic environment in assessing global SOM storage potentials.
Article
Soil Science
Evelin Pihlap, Markus Steffens, Ingrid Koegel-Knabner
Summary: This study aims to elucidate the initial aggregate formation in calcareous loess, showing that organic matter induces the formation of large macroaggregates, while microaggregates do not accumulate soil organic carbon. The findings suggest that soil aggregate formation on young calcareous soils involves both fresh soil organic matter contributing to macroaggregate formation and intrinsic cementation of loess through carbonates affecting microaggregate stability.
Editorial Material
Soil Science
A. Chabbi, I. Koegel-Knabner, C. Rumpel
Correction
Soil Science
Noelia Garcia-Franco, Roswitha Walter, Martin Wiesmeier, Luis Carlos Colocho Hurtarte, Bernd Josef Berauer, Vincent Buness, Marcus Zistl-Schlingmann, Ralf Kiese, Michael Dannenmann, Ingrid Koegel-Knabner
BIOLOGY AND FERTILITY OF SOILS
(2021)
Article
Environmental Sciences
Angelika Kolbl, Klaus Kaiser, Pauline Winkler, Luke Mosley, Rob Fitzpatrick, Petra Marschner, Friedrich E. Wagner, Werner Haeusler, Robert Mikutta
Summary: Experiment on soils containing jarosite showed that adding straw increased pH to 6.5 and decreased Eh to 0 mV, releasing Fe, K, and S into the soil solution. Inducing moderately reductive conditions can effectively remediate soils acidified by oxidation of sulfuric materials.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agriculture, Multidisciplinary
Stefanie Mayer, Martin Wiesmeier, Eva Sakamoto, Rico Huebner, Remi Cardinael, Anna Kuehnel, Ingrid Koegel-Knabner
Summary: Improved agricultural practices such as agroforestry systems have the potential to sequester significant amounts of soil organic carbon (SOC) in temperate climate zones, with higher sequestration rates in topsoils and subsoils, making them an effective measure for climate change mitigation and adaptation.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2022)
Review
Environmental Sciences
Peter M. Kopittke, Asmeret Asefaw Berhe, Yolima Carrillo, Timothy R. Cavagnaro, Deli Chen, Qing-Lin Chen, Mercedes Roman Dobarco, Feike A. Dijkstra, Damien J. Field, Michael J. Grundy, Ji-Zheng He, Frances C. Hoyle, Ingrid Kogel-Knabner, Shu Kee Lam, Petra Marschner, Cristina Martinez, Alex B. McBratney, Eve McDonald-Madden, Neal W. Menzies, Luke M. Mosley, Carsten W. Mueller, Daniel V. Murphy, Uffe N. Nielsen, Anthony G. O'Donnell, Elise Pendall, Jennifer Pett-Ridge, Cornelia Rumpel, Iain M. Young, Budiman Minasny
Summary: Healthy soils play a crucial role in planetary survivability, providing not only calories but also other essential functions. However, intensive agriculture is rapidly degrading soils and diminishing their capacity to deliver vital functions, highlighting the need to focus on the multiple functions of soils for long-term human welfare and the survivability of the planet.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Soil Science
Julien Guigue, Christopher Just, Siwei Luo, Marta Fogt, Michael Schloter, Ingrid Koegel-Knabner, Eleanor Hobley
Summary: This study investigated the molecular changes of particulate organic matter (POM) during decomposition in soil, revealing the roles of POM chemistry and morphology in the early stages of organic matter decomposition cascade. By combining laboratory imaging visible-near-infrared (VNIR) spectroscopy with machine learning, high-resolution mapping of the spatial distribution of molecular characteristics of organic particles in soil cores was achieved at a sub-millimetre scale.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2022)
Article
Soil Science
Livia Urbanski, Peter Schad, Karsten Kalbitz, Jan van Mourik, Ernst Gehrt, Ingrid Koegel-Knabner
Summary: Plaggic Anthrosols are anthropogenic soils with high OC concentrations and improved soil conditions for plant growth. The addition of plaggen material increased soil volume and OC concentrations in the Ap horizons, resulting in significantly higher OC stocks in Plaggic Anthrosols compared to reference soils.
Article
Biodiversity Conservation
Simon Zech, Steffen A. Schweizer, Franziska B. Bucka, Nadja Ray, Ingrid Koegel-Knabner, Alexander Prechtel
Summary: The structure of soil aggregates plays a crucial role in the turnover of particulate organic matter (POM) and organic carbon (OC) dynamics. Dynamic rearrangement of soil aggregates influences POM-related OC turnover and can stimulate mineralization of old POM.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Biodiversity Conservation
Gerrit Angst, Jan Frouz, Jan Willem van Groenigen, Stefan Scheu, Ingrid Kogel-Knabner, Nico Eisenhauer
Summary: Microbial necromass is an important component of soil organic matter (SOM), and managing its production is essential for mitigating climate change. The current consensus is that the production of microbial necromass depends on the carbon use efficiency of microorganisms and the quality of organic matter inputs. However, the role of earthworms in this process has been overlooked. Earthworms accelerate the formation of microbial necromass by creating transient hotspots with high levels of bioavailable substrate, promoting the build-up and turnover of microbial biomass. This conversion of soil organic matter into a more resistant state can help combat climate change.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Soil Science
Angelika Kolbl, Klaus Kaiser, Aaron Thompson, Luke Mosley, Rob Fitzpatrick, Petra Marschner, Leopold Sauheitl, Robert Mikutta
Summary: This study tested the potential of wheat straw-derived dissolved organic carbon (DOC) for remediation of sandy sulfuric soil. The results showed that addition of wheat straw-derived DOC can induce reduction reactions and rapidly increase soil pH under submerged conditions. This method has the potential for rapid and sustainable remediation of sandy sulfuric subsoils.
Article
Agriculture, Multidisciplinary
Laura E. Skadell, Florian Schneider, Martina I. Gocke, Julien Guigue, Wulf Amelung, Sara L. Bauke, Eleanor U. Hobley, Dietmar Barkusky, Bernd Honermeier, Ingrid Kogel-Knabner, Urs Schmidhalter, Kathlin Schweitzer, Sabine J. Seidel, Stefan Siebert, Michael Sommer, Yavar Vaziritabar, Axel Don
Summary: Agricultural management can impact soil organic carbon stocks, with the depth to which these impacts reach remaining uncertain. It is crucial to consider depth effects in order to accurately assess changes in SOC stocks, particularly when evaluating carbon farming measures that are increasingly important in the face of climate change.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2023)
Review
Agronomy
Wulf Amelung, Ni Tang, Nina Siebers, Michaela Aehnelt, Karin Eusterhues, Vincent J. M. N. L. Felde, Georg Guggenberger, Klaus Kaiser, Ingrid Koegel-Knabner, Erwin Klumpp, Claudia Knief, Jens Kruse, Eva Lehndorff, Robert Mikutta, Stephan Peth, Nadja Ray, Alexander Prechtel, Thomas Ritschel, Steffen A. Schweizer, Susanne K. Woche, Bei Wu, Kai U. Totsche
Summary: The functions of soils are closely related to their pore space and biogeochemical interfaces. The study of soil microaggregates can provide insights into their structure and functions. Advanced techniques allow us to assess the size, composition, and porosity of microaggregates and explore their role in element cycling. However, these techniques have specific requirements and limitations in sample preparation and analysis.
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
(2023)
