Article
Ecology
Tori A. Hebert, Halvor M. Halvorson, Kevin A. Kuehn
Summary: A systematic survey of standing dead decomposition studies in marsh wetlands found that litter with low C:N and C:P ratios decomposed faster, while % lignin was not significantly correlated with decomposition rates. Additionally, low-lignin litter was more susceptible to fungal colonization, and fungal carbon-use efficiency was negatively correlated with litter stoichiometry.
Article
Plant Sciences
Jun Pan, Craig R. See, Rui Wang, Junwei Luan, Jing Wang, Fan Liu, Xiankui Quan, Hongyang Chen, Xingchang Wang, Chuankuan Wang
Summary: Below-ground litter decomposition is an important source of nitrogen and phosphorus in forest soils, but roots also immobilize these nutrients during the process. However, the rates and drivers of nutrient immobilization and release from root litter remain poorly understood.
JOURNAL OF ECOLOGY
(2023)
Article
Ecology
Qingxu Ma, Yakov Kuzyakov, Wankun Pan, Sheng Tang, David R. Chadwick, Yuan Wen, Paul W. Hill, Andy Macdonald, Tida Ge, Linlin Si, Lianghuan Wu, Davey L. Jones
Summary: Global plant sulphur deficiency is on the rise due to reduced application of sulphate-based fertilisers and continuous S withdrawal during harvest. Research using quad labeling of S-containing amino acids in soil showed that soil microorganisms quickly absorbed and released sulfur compounds, with the release and reutilization being determined by amino acid structure. Short-term organic sulfur utilization in soil is determined by amino acid structure, while long-term utilization is controlled by microbial stoichiometry.
Article
Environmental Sciences
Shiqi Wang, Minghua Song, Chunmei Wang, Xiaomin Dou, Xinqing Wang, Xingyue Li
Summary: A long-term experiment was conducted to study the effects of different chemical forms and rates of nitrogen addition on the composition of soil microbes and the abundance of phosphorus functional genes. It was found that ammonia form-N increased the abundance of P-solubilizing bacteria, while continuous N deposition decreased soil pH and inhibited the viability and activity of bacterial communities. Furthermore, ammonium-N enhanced the relative abundance of most organic P mineralization genes, while nitrate-N showed a decreasing trend.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Soil Science
Petr Capek, Michal Choma, Karolina Tahovska, Jiri Kana, Jiri Kopacek, Hana Santruckova
Summary: Our study found that the capability of microbial community to reduce its demand for external nutrients is responsible for the difference between the predictions and observations. The active part of microbial community instantly recycled N from decaying part of microbial community and very likely utilized internal P sources (i.e. polyphosphates). The results suggest that N recycling from dead microbial biomass and the internal microbial P sources warrant further investigation.
Article
Agronomy
Zhaoxuan Ge, Dongzhi Wang, Qiang Liu, Jing Wang, Jing Zhang, Ruiming Cheng, Zhidong Zhang
Summary: The aim of this study was to investigate the impact of global nitrogen (N) and phosphorus (P) deposition on litter decomposition. The results showed that continuous N and P deposition can enhance the decomposition rate of leaf litter, but alter the nutrient release pattern in larch plantation.
Article
Green & Sustainable Science & Technology
Xiaojin Hu, Xiaodong Wan, Wei Tan, Huijun Xie, Linlan Zhuang, Jian Zhang, Shuang Liang, Zhen Hu
Summary: Iron oxides can nourish iron reducing bacteria and increase available electrons in constructed wetland systems. The addition of limonite improved nitrogen removal efficiency but excessive addition may induce phosphorus release. The study highlights the importance of balancing iron cycling for improved nutrient removal in wetlands.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Agronomy
Tomohiro Yokobe, Fujio Hyodo, Ryunosuke Tateno, Naoko Tokuchi
Summary: The topographic positions in natural forests can significantly impact litter traits, soil microbial characteristics, and nitrogen mineralization, leading to plant-soil feedbacks. In a temperate forest dominated by Fagus crenata, it was found that upper slope positions have higher coarse litter abundance and litter C-to-N ratio but lower soil microbial biomass, bacterial abundance, and N mineralization potential. This suggests that fine litter traits and coarse litter abundance are closely related to soil microbial characteristics and N mineralization in forests with varied topography.
Article
Soil Science
Timothy J. Fahey, Catherine Fahey, Marc Goebel, Pedro M. Antunes, Joseph B. Yavitt
Summary: Accurate measurement of fine root decomposition in forests is crucial for understanding nutrient cycling, carbon dynamics, and biotic responses. However, commonly used approaches may introduce errors or biases. This study compared the buried root litter bag method with the intact soil core approach and found that the latter generally resulted in higher decay rates and nutrient release. However, there were exceptions for certain tree species. The mycorrhizal type did not consistently affect the method effect or decay rate and nutrient release, but fungal communities differed between the two methods.
APPLIED SOIL ECOLOGY
(2024)
Article
Green & Sustainable Science & Technology
Naven Ramdat, Zi-Jing Wang, Jung-Chen Huang, Yikun Wang, Azharuddin Chachar, Chuanqi Zhou, Zhiping Wang
Summary: Constructed wetlands, specifically floating treatment wetlands, have the potential to efficiently remove excessive nutrients from surface waters. However, the presence of antibiotics, such as enrofloxacin, threatens the performance of these wetlands. This study revealed that enrofloxacin exposure enhanced plant growth and nutrient uptake, while slightly inhibiting nitrogen removal. The wetland showed resilience and adapted to enrofloxacin within a month, with no significant differences in nutrient removal and microbial communities compared to the control.
Article
Environmental Sciences
Wen-Huai Wang, Yi Wang, Ke Zhou, Hao-Min Li, Peng-Li Yang
Summary: The study found that CaO2 can increase nitrogen cycling enzyme activity and microbial abundance in sediments, thereby promoting nitrogen removal. At the same time, CaO2 can also accelerate organic phosphorus hydrolysis and phosphorus immobilization, reduce nutrient concentration, and kill algae, contributing to the remediation of endogenous pollution in water systems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Jirui Gong, Zihe Zhang, Chenchen Zhu, Jiayu Shi, Weiyuan Zhang, Liangyuan Song, Ying Li, Siqi Zhang, Jiaojiao Dong, Xiaobing Li
Summary: The study found that phosphorus addition can promote the decomposition of Stipa grandis and mixed litter, and phosphorus addition also promotes nitrogen and phosphorus immobilization, but leucine aminopeptidase production is also promoted under high phosphorus concentrations. The results show that Inner Mongolia's grasslands have significant decomposition and nutrient release processes under precipitation conditions.
JOURNAL OF ARID ENVIRONMENTS
(2022)
Article
Plant Sciences
Zenghui Peng, Yuhang Du, Shiyu Niu, Lianlian Xi, Yandong Niu, Youzhi Li
Summary: This study investigated the fixation of nitrogen and phosphorus in Miscanthus lutarioriparius and compared the difference in nitrogen and phosphorus sinks between harvest and non-harvest scenarios. The results showed that the nitrogen and phosphorus sinks greatly decreased after non-harvest, suggesting that continuous harvesting of the plant is recommended to enhance the capacity of element sinks.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agricultural Engineering
Tongtong Zhou, Jiangong Liu, Zhiyang Lie, Derrick Y. F. Lai
Summary: This study investigated the effects of different carbon substrates on the treatment efficiency of hydroponic wastewater using vertical flow constructed wetlands. The addition of sucrose and common reed litter improved the removal of nitrogen and phosphate, and the common reed litter also reduced the emission of greenhouse gases.
BIORESOURCE TECHNOLOGY
(2022)
Article
Biodiversity Conservation
Lei Qin, Chris Freeman, Xueying Jia, Zhongsheng Zhang, Bo Liu, Shaoqing Zhang, Ming Jiang
Summary: The study found that agricultural intervention significantly increased total phosphorus in agricultural and disturbed peatlands, decreased soil organic carbon content and total nitrogen in surface soil of agricultural peatlands, and yet total nitrogen significantly accumulated at 20-30 cm depth in both types of peatlands. Enzyme activities of N-acetyl-13-glucosaminidase and phosphatase declined in agricultural peatlands, with a stronger decrease in phosphatase in disturbed peatlands.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Jia-Wen Xu, Na Yang, Fu-Xi Shi, Yun Zhang, Songze Wan, Rong Mao
Summary: Bark plays a crucial role in controlling the characteristics of dissolved organic matter (DOM) leached from tree branches. It prevents the leaching of DOM and regulates its bioavailability. Regardless of tree type, the presence of bark reduces the production of tree branch-leached DOM, and the DOM production in branches with bark is always lower than expected.
Article
Agronomy
Xinhou Zhang, Yuanhang Zhang, Shuangshuang Jiang, Changchun Song, Jinbo Zhang, Rong Mao
Summary: In boreal peatlands, climate warming leads to changes in species dominance and evenness, which in turn affects the decomposition of litter mixtures.
Article
Forestry
Jia-Wen Xu, Jing-Hao Ji, Dong-Nan Hu, Zhi Zheng, Rong Mao
Summary: The study found that the production and biodegradability of fresh tree tissue-leached DOM are influenced by leaf habit and organ type, as well as co-driven by DOM aromaticity and N availability.
Article
Agriculture, Multidisciplinary
Hui-Min Chen, Fu-Xi Shi, Xian-Wei Wang, Xin-Hou Zhang, Rong Mao
Summary: The conversion of drylands to paddy fields on former wetlands in the Sanjiang Plain of northeast China enhances the soil organic carbon stock by promoting the accumulation of labile carbon fractions. Labile carbon fractions are more sensitive to this successive land-use change than recalcitrant carbon fractions.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2023)
Article
Agronomy
Pan-Pan Wu, Ling-Xin Jiang, Yan Zhang, Qi-Han Tu, Rong Mao
Summary: The study conducted in subtropical forests found that manganese has a greater impact on litter decomposition in the late stage rather than in the early stage, and influences mixed litter decomposition by reducing non-additive effects.
Article
Plant Sciences
Fu-Xi Shi, Xian-Wei Wang, Gui-Gang Lin, Xin-Hou Zhang, Hui-Min Chen, Rong Mao
Summary: Nitrogen enrichment alters plant composition in boreal permafrost peatlands, decreasing species richness and diversity while increasing above-ground biomass. The relative coverage of tall plants increases, whereas the coverage of short plants decreases with higher nitrogen addition levels. Cryptogams and dwarf evergreen shrubs are highly vulnerable to nitrogen enrichment, and their disappearance deteriorates ecosystem structure and function.
APPLIED VEGETATION SCIENCE
(2022)
Article
Biodiversity Conservation
Guang-Jiao Chen, Fu-Xi Shi, Qin Ying, Rong Mao
Summary: This study investigated the effects of alder expansion on soil microbial necromass carbon in a permafrost peatland in the Heilongjiang Province of China. The results showed that alder patches had lower C:N ratios and higher C:P ratios compared to open peatlands. Alder expansion increased microbial biomass carbon, net nitrogen mineralization rate, and basal respiration rate in the soil. However, it also decreased the ratio of microbial biomass carbon to nitrogen. Additionally, alder expansion led to an increase in the concentration of certain compounds in the soil, resulting in an increase in bacterial, fungal, and total necromass carbon.
ECOLOGICAL INDICATORS
(2022)
Article
Geosciences, Multidisciplinary
Fuyuan Gao, Junhuai Yang, Dunsheng Xia, Hao Lu, Shuyuan Wang, Kaiming Li, Zhenqian Wang, Zhipeng Wu, Jiaxin Zhou, Fuxi Shi
Summary: This study systematically considers the factors of moisture/precipitation, temperature, and near-surface wind in exploring the Holocene climate history of the arid Xinjiang region. The findings suggest a relatively cold and dry period in the early to middle Holocene, with strong near-surface winds, and a warmer and wetter period in the middle to late Holocene, with weaker near-surface winds. A conceptual model is proposed to explain the pattern of Holocene climate changes, highlighting the significant role of winter temperature in driving the climatic evolution of the region. These findings have implications for the socio-economic development and water resources security of the arid Xinjiang region in the future.
GEOSCIENCE FRONTIERS
(2022)
Article
Environmental Sciences
Fu -Xi Shi, Hui -Min Chen, Xian-Wei Wang, Rong Mao
Summary: Alder encroachment leads to reduced soil organic carbon storage in peatlands, increased microbial mineralization rate of organic carbon, and alterations in chemical structure stability. This may accelerate soil organic carbon loss.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Ecology
Le-Lin Yu, Xin-Hou Zhang, Fu-Xi Shi, Rong Mao
Summary: This study investigated the impact of shrub encroachment on nutrient resorption efficiency and proficiency in temperate wetlands. The results showed that increased shrub cover reduced leaf nitrogen resorption efficiency and proficiency, but had no significant effect on leaf phosphorus resorption efficiency and proficiency. Shrub encroachment also led to a decrease in community-level leaf nitrogen and phosphorus resorption efficiency, due to increased dominance of shrubs over grasses and sedges.
ECOLOGICAL PROCESSES
(2022)
Article
Geosciences, Multidisciplinary
Xiong-Fei Zhang, Nan-Hai Zhong, Rui Li, Fu-Xi Shi, Rong Mao
Summary: Increased N availability in boreal peatlands due to climate warming and atmospheric nitrogen deposition alters decomposition dynamics of plant litter, particularly for litter mixtures. It was found that increased N availability reduces the decomposition effects of litter mixtures, and this change is more pronounced in areas with low litter quality.
Article
Forestry
Hui -Min Chen, Fu -Xi Shi, Jia-Wen Xu, Xing -Ping Liu, Rong Mao
Summary: Tree mycorrhizal type is a potential indicator of soil dissolved organic matter (DOM) concentration and biodegradation, and its effects on DOM dynamics can be influenced by soil texture, stoichiometry, and C quality in subtropical forests, according to a study conducted in a subtropical secondary forest in southern China. The results showed that the dominance of ectomycorrhizal (ECM)-associated trees increased the concentration of soil water-extractable organic carbon (WEOC), while decreasing the biodegradation of soil water-extractable organic matter (WEOM) in the 10-30 cm soil depth.
FOREST ECOLOGY AND MANAGEMENT
(2023)
Article
Biodiversity Conservation
Maofei Ni, Rong Mao, Xianwei Wang
Summary: This study investigated the response of dissolved organic matter (DOM) quantity and characteristics to nitrogen (N) addition in a permafrost peatland in Northeast China. The results showed that increased N availability reduced dissolved organic carbon concentrations in surface water and soil pore water, and had a greater impact on DOM characteristics in soil pore water than in surface water.
ECOLOGICAL INDICATORS
(2023)
Article
Forestry
Yuepeng Chen, Shikai Li, Lu Zeng, Bo An, Tingqi Xiao, Rong Mao, Yun Zhang
Summary: The study aimed to investigate the effects of mycorrhizal and extraradical hyphae on soil properties and enzyme activity characteristics, and its indicative effect on soil nutrient effectiveness in a subtropical plantation. The results showed that tree species and pH significantly influenced soil physical and chemical properties, enzyme activity, and stoichiometric ratios.