Article
Plant Sciences
Meixia Liu, Xueqing Zhao, Md Elias Hossain, Shangwen Wang, Wenyi Dong, Subramaniam Gopalakrishnan, Enke Liu
Summary: Different nitrogen application rates under plastic film mulching have significant effects on soil extracellular enzyme activities and stoichiometry, with plastic film mulching benefiting soil nutrient balance and microbial activity.
Article
Soil Science
Leanne Peixoto, Lars Elsgaard, Jim Rasmussen, Jorgen E. Olesen
Summary: The study investigated the impact of nitrogen, phosphorus, and sulfur limitations on carbon mineralization in deep subsoil samples amended with glucose and artificial root exudates. Results showed that mineralization was co-limited by nitrogen and phosphorus, with artificial root exudates containing amino acid-derived nitrogen potentially overcoming the nitrogen limitation in deep subsoils. This highlights the potential role of labile carbon substrates and nutrients from deep-rooted crops in influencing carbon sequestration in subsoil.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2021)
Article
Soil Science
Jian LI, Per Bengtson
Summary: The rhizosphere priming effect (RPE) is an important regulator of soil organic matter (SOM) decomposition and nutrient turnover. The choice of control greatly influences the quantification of RPE. This study suggests using a planted control to accurately assess RPE and highlights the importance of considering the choice of control when studying the response of RPE to environmental change.
Article
Soil Science
Lei Song, Jinsong Wang, Junxiao Pan, Yingjie Yan, Shuli Niu
Summary: This study measured the gross N mineralization rate (GNMR) and related properties in an alpine meadow under chronic nitrogen (N) addition at different soil depths. The results showed that GNMR was negatively correlated with N addition rate and soil available NO3- content, and positively correlated with soil pH and carbon/nitrogen ratio (C/N). Acidification, increased N availability, and C limitation all decreased soil N mineralization, with acidification dominating in the topsoil and C limitation dominating in the subsoil. These findings improve our understanding of soil N mineralization with chronic N enrichment at different depths.
Article
Soil Science
Quanxin Zeng, Yuanyuan Liu, Qiufang Zhang, Kongcan Mei, Xiaochun Yuan, Kaimiao Lin, Jiacong Zhou, Xiaoxia Wu, Min Xu, Yuehmin Chen
Summary: This study aimed to investigate the effects of long-term nitrogen (N) fertilization on priming effects (PE) induced by labile carbon (C) inputs. It was found that the previously fertilized soil had lower cumulative primed carbon regardless of the mode of glucose addition, and it showed a positive relationship with soil pH and peroxidase activity. The frequency of glucose addition affected the intensity and regulation of soil PE.
BIOLOGY AND FERTILITY OF SOILS
(2023)
Article
Ecology
Jingjing Yang, Pingting Guan, Peng Zhang, Yunga Wu, Deli Wang, Donghui Wu
Summary: The research found that precipitation has an impact on microbial nutrient demand in agroecosystems, especially in different soil profiles. Soil pH and moisture are the main factors affecting soil enzyme activity. Furthermore, the nutrient limitation mechanism in soil varies with precipitation changes, with microbial phosphorus limitation exacerbated by increased precipitation in the topsoil and microbial carbon and phosphorus limitation positively correlated with precipitation in the subsoil.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2023)
Article
Agronomy
Zhenhui Jiang, Yizhen Liu, Jingping Yang, Zhiqin Zhou, Anna Gunina
Summary: The study found that nitrogen input affects the rhizosphere priming effect, with high nitrogen competition leading to microbial C:N imbalance, which affects enzyme activities and microbial metabolic efficiency, thereby influencing the competition between plants and microbes.
Article
Geosciences, Multidisciplinary
Cuicui Hou, Yongwen Huang, Peijie Zhang, Hongli Zhang, Xiaoxin Sun, Jianmin Ma, Xinhou Zhang, Yingchen Li
Summary: Croplands reclaimed from floodplain wetlands have increased soil nutrient contents and enzyme activities, particularly in the plough layer. However, these croplands are still deficient in nitrogen.
Article
Plant Sciences
Zaid Khan, Kangkang Zhang, Mohammad Nauman Khan, Junguo Bi, Kunmiao Zhu, Lijun Luo, Liyong Hu
Summary: The use of biochar can improve soil and plant enzymatic activities, enhance nutrient cycling and accumulation, and increase the utilization of inorganic fertilizer and crop growth. Combining biochar with nitrogen fertilizer can increase soil enzymatic activities and improve the activity of nitrogen metabolism-related enzymes in plants. The combination of 30 t ha(-1) biochar and 450 kg ha(-1) nitrogen fertilizer can promote rapeseed growth and yield, while 15 t ha(-1) biochar with 225 kg ha(-1) nitrogen fertilizer can improve nitrogen use efficiency.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agronomy
Xing Liu, Nan Jiang, Guoyan Jing, Shuqiang Wang, Zhenhua Chen, Yulan Zhang
Summary: The effect of biochar application rate on the mechanism of organic N transformation and enzyme mineralization contribution is unclear. Two 5-year field experiments were conducted in contrasting soils, revealing that biochar application rate significantly influenced soil organic carbon content, microbial biomass nitrogen content, and protease activity, while soil type significantly affected ammonium nitrogen and nitrate nitrogen content, and dehydrogenase activity. These findings provide insights into the regulation of soil nitrogen turnover by biochar application.
GLOBAL CHANGE BIOLOGY BIOENERGY
(2023)
Article
Engineering, Environmental
Weilu Kang, Shan Sun, Xiangang Hu
Summary: Microplastics are widely distributed on Earth, especially in the oceans. They have different effects on nitrogen assimilation in diatoms under nitrogen-replete and nitrogen-limited conditions. The spatial redistribution of nitrogen assimilation in response to microplastics highlights the potential risks of contamination in the ocean.
Article
Soil Science
Shiting Xia, Jun Jiang, Fengcai Liu, Zhongbing Chang, Mengxiao Yu, Chunyi Liu, Ying-Ping Wang, Junhua Yan
Summary: Nitrogen addition drives ecosystems towards phosphorus limitation, while the effect of phosphorus addition on ecosystem nitrogen cycling processes is unclear. A meta-analysis of observational data from 222 independent studies was conducted to assess the responses of plant and soil nitrogen pools, and nitrogen fluxes to phosphorus addition at a global scale. The results showed that phosphorus addition had an overall positive impact on plant nitrogen uptake and ecosystem nitrogen retention, with increases in plant nitrogen pools and microbial nitrogen transformation, and a decrease in soil nitrogen leaching. The role of soil microbes in promoting plant nitrogen uptake was greater in mid-/high-latitude ecosystems, and the sensitivity of nitrogen-cycling variables to phosphorus addition was stronger in acidic or weathered soils. Incorporating these findings into terrestrial ecosystem nutrient-cycling models is crucial.
APPLIED SOIL ECOLOGY
(2023)
Article
Plant Sciences
Aimin Zhu, Haili Liu, Yuehua Wang, Hailian Sun, Guodong Han
Summary: Grazing disturbance affects the activities of nitrogen assimilation related enzymes in grassland plants, with light and moderate grazing being beneficial for nitrogen assimilation. Therefore, establishing appropriate stocking rates is crucial for material flows in the grassland ecosystem and for the stability and sustainable utilization of grassland resources.
Article
Ecology
Dandan Qi, Guodong Huang, Yuhan Feng, Xin He, Yu Song, Fuqiang Song
Summary: This study investigated the impact mechanisms of long-term nitrogen addition on soil priming effect (PE) in Korean pine plantations. The results showed that nitrogen addition significantly changed the soil bacterial community structure and carbon enzyme activities played a direct role in regulating PE.
FUNCTIONAL ECOLOGY
(2023)
Article
Soil Science
Michael Herre, Stefanie Heinze, Julian Heitkoetter, Bernd Marschner
Summary: The input of substrates and nutrients into deeper soil layers is limited to small regions of the bulk soil through living roots and preferential flow paths, which can stimulate a more abundant and diverse microbial community. This study aimed to investigate if SOC mineralization is differentially limited by nutrients and substrates in bulk and rhizosphere soil, and if the limitation varies among different sites.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Soil Science
Edmund Kyei Akoto-Danso, Delphine Manka'abusi, Christoph Steiner, Steffen Werner, Volker Haering, George Nyarko, Bernd Marschner, Pay Drechsel, Andreas Buerkert
NUTRIENT CYCLING IN AGROECOSYSTEMS
(2019)
Review
Public, Environmental & Occupational Health
Mihai Zamfir, Doris G. Gerstner, Sandra M. Walser, Juergen Buenger, Thomas Eikmann, Stefanie Heinze, Annette Kolk, Dennis Nowak, Monika Raulf, Helmut Sagunski, Nadja Sedlmaier, Roland Suchenwirth, Gerhard A. Wiesmueller, Klaus-Michael Wollin, Irene Tesseraux, Caroline E. W. Herr
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
(2019)
Article
Soil Science
Delphine Manka'abusi, Christoph Steiner, Edmund Kyei Akoto-Danso, Desire J. P. Lompo, Volker Haering, Steffen Werner, Bernd Marschner, Andreas Buerkert
NUTRIENT CYCLING IN AGROECOSYSTEMS
(2019)
Article
Agronomy
Edmund Kyei Akoto-Danso, Delphine Manka'abusi, Christoph Steiner, Steffen Werner, Volker Haering, Desire J-P Lompo, George Nyarko, Bernd Marschner, Pay Drechsel, Andreas Buerkert
JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
(2019)
Article
Forestry
Kristina Kirfel, Stefanie Heinze, Dietrich Hertel, Christoph Leuschner
FOREST ECOLOGY AND MANAGEMENT
(2019)
Article
Soil Science
Steffen Werner, Edmund Kyei Akoto-Danso, Delphine Manka'abusi, Christoph Steiner, Volker Haering, George Nyarko, Andreas Buerkert, Bernd Marschner
NUTRIENT CYCLING IN AGROECOSYSTEMS
(2019)
Article
Environmental Sciences
Melanie Martz, Jannis Heil, Bernd Marschner, Britta Stumpe
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Plant Sciences
Ina C. Meier, Timo Tueckmantel, Julian Heitkoetter, Karolin Mueller, Sebastian Preusser, Thomas J. Wrobel, Ellen Kandeler, Bernd Marschner, Christoph Leuschner
Article
Soil Science
Mamoun A. Gharaibeh, Bernd Marschner, Stefanie Heinze, Nicolai Moos
Article
Soil Science
Bernhard Ahrens, Georg Guggenberger, Janet Rethemeyer, Stephan John, Bernd Marschner, Stefanie Heinze, Gerrit Angst, Carsten W. Mueller, Ingrid Koegel-Knabner, Christoph Leuschner, Dietrich Hertel, Joerg Bachmann, Markus Reichstein, Marion Schrumpf
SOIL BIOLOGY & BIOCHEMISTRY
(2020)
Article
Agronomy
Isaac Asirifi, Steffen Werner, Stefanie Heinze, Courage K. S. Saba, Innocent Y. D. Lawson, Bernd Marschner
Summary: The study found that biochar and wastewater irrigation have positive effects on soil biological properties, contributing to soil fertility.
Article
Environmental Sciences
Isaac Asirifi, Korbinian Kaetzl, Steffen Werner, Courage K. S. Saba, Felix K. Abagale, Philip Amoah, Bernd Marschner
Summary: The study in urban agriculture in northern Ghana found that wastewater irrigation led to the contamination of vegetables and soil with pathogens such as E. coli, fecal coliform, and helminth eggs. The application of biochar did not affect bacteria contamination, and heavy metal levels were below standard for agricultural activities. Pathogen contamination was directly linked to irrigation water, with minimal influence from biochar application.
JOURNAL OF ENVIRONMENTAL QUALITY
(2021)
Review
Agronomy
Stefanie Heinze, Michael Hemkemeyer, Sanja Annabell Schwalb, Khalid Saifullah Khan, Rainer Georg Joergensen, Florian Wichern
Summary: This review summarizes the current state of knowledge on microbial biomass in different soils, with a focus on the importance of sulfur (S) and methodological shortcomings. The study shows that microbial biomass in soils is influenced by various factors, including soil pH and organic carbon content. Future research is needed to verify these observations and further explore the relationships between elements in soil and the soil microbial ionome.
Article
Agronomy
Chinyere Blessing Okebalama, Bernd Marschner
Summary: This study assessed the responses of soil aggregates to the reapplication of biochar and organic/inorganic fertilizers. The results showed that the application of ecological sanitation manure increased soil fertility, while the combination of biochar with urea and cattle manure had a better effect on carbon and nitrogen accumulation in the soil.