Soil organic nitrogen content and composition in different wetland habitat types along the south-east coast of China

Xiang, Lin; Yang, Yan; Yang, Ping; Yang, Hong; Lin-hai, Zhang; Tong, Chuan; Lai, Derrick Y.F.; Lin, Yongxin; Tan, Lishan; Tian, Yalan; Tang, Kam W.

doi:10.1016/j.catena.2023.107457

Cited by 6 publications

(13 citation statements)

References 57 publications

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“…The long-term accumulation and circulation of soil N affect the balance and stability of the whole ecosystem Bai et al, 2012). Our study found that the TN content of the Gahai wet meadow was higher than that of mud ats, alterni ora marshes, and aquaculture ponds (Lin et al, 2023), and this mainly due to the differences in the vegetation, climate conditions, soil landform, and soil characteristics in different study areas (Wu et al, 2013). The results showed that compared with CK, N and P addition signi cantly increased the TN content of soil in the 0-40cm layer (Fig.…”

Section: Discussionmentioning

confidence: 59%

Response of soil nitrogen pool to nitrogen and phosphorus addition in the wet meadow of the Qinghai-Tibet Plateau

LU,

Li,

et al. 2024

Preprint

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Background and aims The soil nitrogen (N) conversion process is an important part of the N cycle in wetland ecosystems, which regulates the content of soil available N and determines the retention status of soil N. N deposition and phosphorus (P) input caused by human activities will change the soil N pool, thereby affecting the soil function and conversion process. However, the responses of soil nitrogen pools to N and P addition in the QTP remain unknown. Methods In this study, an experiment was carried out for two years in wetlands situated on the Qinghai-Tibet Plateau. We analyzed the effects of N and P additions on soil nitrogen pool (i.e., blank control (CK), N addition (15 kg N ha− 1 yr− 1, N15), P addition (15 kg P ha− 1 yr− 1, P15), and NP co-addition (15 kg NP ha− 1 yr− 1, N15P15)), and discussed the main driving factors. Results The results showed that N and P addition significantly increased the contents of total nitrogen (TN) and ammonia nitrogen (NH4+-N) in 0-40cm soil layer, and decreased the contents of soil dissolved organic nitrogen (DON), but had no significant effect on the contents of soil microbial biomass nitrogen (MBN). The nitrate nitrogen (NO3−-N) content decreased under the N15 addition, and the TN storage was the highest under the P15 addition. Under each treatment, the surface soil (0-10cm) was more sensitive to N and P addition, while the deep soil was relatively stable. Redundancy analysis (RDA) showed that soil organic carbon (Explanation = 40.80%), soil density (Explanation = 8.70%), and carbon-to-nitrogen ratio (Explanation = 8.40%) were the main environmental factors affecting the content of each N fraction under the N and P addition. Conclusion N and P addition would affect the stability and transformation of wetland soil nitrogen pool, and the nitrogen transformation process was mainly regulated by soil physicochemical properties.

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Section: Discussionmentioning

confidence: 59%

Response of soil nitrogen pool to nitrogen and phosphorus addition in the wet meadow of the Qinghai-Tibet Plateau

LU,

Li,

et al. 2024

Preprint

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“…An earlier study along the southeast coast of China found that soil organic nitrogen (SON) increased after invasion of mudflats by S. alterniflora but decreased when the Spartina marshes were converted to aquaculture ponds, primarily due to changing organic matter input (Lin et al, 2023). These findings were in line with the changes in soil inorganic nitrogen (SIN) (Yang et al, 2023).…”

Section: Introductionmentioning

confidence: 60%

“…Descriptions of the wetland areas, local climate and history of habitat modification (mudflats to S. alterniflora marshes, then to earthen aquaculture ponds) can be found in (Hong et al, 2023;Lin et al, 2023;Yang et al, 2022a and.…”

Section: Study Area Soil Sampling and Analysismentioning

confidence: 99%

“…Afterward, a subsample was air-dried, finely ground (< 0.149 mm) and used for measuring soil total N (STN) with a Vario MAX CN analyzer (Elementar Scientific Instruments, Germany) (Lin et al, 2023;Xia et al, 2021). Another subsample was extracted with 2 M KCl solution for nitrate-N (NO3 --N) and ammonium-N (NH4 + -N) (Gao et al, 2019), and the concentrations of NO3 --N and NH4 + -N in the extracts were quantified using SAN ++ Continuous Flow Analyzer (Skalar, Netherlands).…”

Section: Study Area Soil Sampling and Analysismentioning

confidence: 99%

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Latitudinal responses of wetland soil nitrogen pools to plant invasion and subsequent aquaculture reclamation along the southeastern coast of China

Tan,

Yang,

Lin

et al. 2024

Agriculture, Ecosystems & Environment

Self Cite

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“…The available phosphorus content was extracted using sodium bicarbonate, colored with molybdenum antimony, and measured and calculated using a spectrophotometer (Shimadzu, Japan). The hydrolyzable nitrogen content was determined by steam distillation using 10 M NaOH after Kjeldahl digested of the acid hydrolysate ( Lin et al., 2023 ). Soil organic matter content was measured using a CHNS/O elemental analyzer (Thermo Fisher Scientific Corp., USA).…”

Section: Methodsmentioning

confidence: 99%

Response of bacterial community metabolites to bacterial wilt caused by Ralstonia solanacearum: a multi-omics analysis

Wei,

Liang,

Wang

et al. 2024

Front. Plant Sci.

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The soil microbial community plays a critical role in promoting robust plant growth and serves as an effective defence mechanism against root pathogens. Current research has focused on unravelling the compositions and functions of diverse microbial taxa in plant rhizospheres invaded by Ralstonia solanacearum, however, the specific mechanisms by which key microbial groups with distinct functions exert their effects remain unclear. In this study, we employed a combination of amplicon sequencing and metabolomics analysis to investigate the principal metabolic mechanisms of key microbial taxa in plant rhizosphere soil. Compared to the healthy tobacco rhizosphere samples, the bacterial diversity and co-occurrence network of the diseased tobacco rhizosphere soil were significantly reduced. Notably, certain genera, including Gaiella, Rhodoplanes, and MND1 (Nitrosomonadaceae), were found to be significantly more abundant in the rhizosphere of healthy plants than in that of diseased plants. Eight environmental factors, including exchangeable magnesium, available phosphorus, and pH, were found to be crucial factors influencing the composition of the microbial community. Ralstonia displayed negative correlations with pH, exchangeable magnesium, and cation exchange flux, but showed a positive correlation with available iron. Furthermore, metabolomic analysis revealed that the metabolic pathways related to the synthesis of various antibacterial compounds were significantly enriched in the healthy group. The correlation analysis results indicate that the bacterial genera Polycyclovorans, Lysobacter, Pseudomonas, and Nitrosospira may participate in the synthesis of antibacterial compounds. Collectively, our findings contribute to a more in-depth understanding of disease resistance mechanisms within healthy microbial communities and provide a theoretical foundation for the development of targeted strategies using beneficial microorganisms to suppress disease occurrence.

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Soil organic nitrogen content and composition in different wetland habitat types along the south-east coast of China

Cited by 6 publications

References 57 publications

Response of soil nitrogen pool to nitrogen and phosphorus addition in the wet meadow of the Qinghai-Tibet Plateau

Response of soil nitrogen pool to nitrogen and phosphorus addition in the wet meadow of the Qinghai-Tibet Plateau

Latitudinal responses of wetland soil nitrogen pools to plant invasion and subsequent aquaculture reclamation along the southeastern coast of China

Response of bacterial community metabolites to bacterial wilt caused by Ralstonia solanacearum: a multi-omics analysis

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