Characteristics of Dissolved Organic Matter as Affected by Decomposition of Different Organic Materials in Alpine Wetland
Abstract
:1. Introduction
2. Materials and Methods
2.1. Preparation of Organic Materials
2.2. Decomposition Experiment and Sampling
2.3. Measurement of Basic Properties
2.4. Three-Dimensional Excitation-Emission Matrix Fluorescence Spectroscopy (3D-EEM)
2.5. Statistical Analysis
3. Results
3.1. Basic Properties
3.2. Spectral Indices of DOM
3.3. DOM Components by EEM and Parallel Factor Analysis
3.4. Correlation of DOM Components with Basic Properties and Spectral Indices of DOM
4. Discussion
4.1. Chemical Characteristics of DOM in Decomposition of Different Organic Materials in Alpine Wetland
4.2. DOM Compositions in Decomposition of Different Organic Materials in Alpine Wetland
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Treatments | pH | DOC/mg L−1 | DTN/mg L−1 | DOC/DTN | P/mg L−1 | K/mg L−1 | Fe/mg L−1 | Ca/mg L−1 |
---|---|---|---|---|---|---|---|---|
S | 8.49 ± 0.05 b | 128.83 ± 17.89 c | 11.91 ± 0.55 b | 10.83 ± 0.42 b | 0.086 ± 0.010 b | 32.56 ± 4.29 a | 0.084 ± 0.011 a | 49.71 ± 7.58 a |
M | 8.75 ± 0.08 a | 179.66 ± 11.95 b | 15.44 ± 0.67 a | 11.64 ± 0.93 b | 0.121 ± 0.016 a | 35.96 ± 5.81 a | 0.089 ± 0.012 a | 55.68 ± 6.42 a |
P | 8.57 ± 0.09 b | 213.44 ± 10.93 a | 10.56 ± 0.31 b | 20.23 ± 1.62 a | 0.099 ± 0.014 ab | 41.85 ± 6.72 a | 0.079 ± 0.017 a | 51.82 ± 8.33 a |
SP | 8.43 ± 0.05 c | 254.73 ± 12.26 a | 11.61 ± 0.33 b | 21.96 ± 1.46 a | 0.092 ± 0.011 b | 37.82 ± 5.22 a | 0.091 ± 0.016 a | 49.69 ± 6.95 a |
SM | 8.51 ± 0.05 c | 148.36 ± 22.82 bc | 13.75 ± 0.27 ab | 10.78 ± 3.10 b | 0.122 ± 0.020 a | 34.98 ± 4.96 a | 0.085 ± 0.014 a | 48.35 ± 7.86 a |
SMP | 8.58 ± 0.05 b | 197.33 ± 16.42 b | 13.09 ± 0.37 ab | 8.22 ± 1.43 b | 0.125 ± 0.019 a | 37.43 ± 4.37 a | 0.093 ± 0.023 a | 52.74 ± 6.99 a |
Treatments | FI | BIX | HIX |
---|---|---|---|
S | 1.458 ± 0.039 c | 0.418 ± 0.011 c | 2.907 ± 0.128 a |
M | 1.612 ± 0.030 a | 0.578 ± 0.016 a | 1.524 ± 0.053 c |
P | 1.524 ± 0.026 ab | 0.459 ± 0.008 bc | 2.327 ± 0.125 b |
SM | 1.485 ± 0.007 bc | 0.430 ± 0.006 c | 2.770 ± 0.071 ab |
SP | 1.440 ± 0.066 c | 0.501 ± 0.010 ab | 2.260 ± 0.046 c |
SMP | 1.514 ± 0.079 bc | 0.463 ± 0.028 bc | 2.165 ± 0.293 b |
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Song, Y.; Li, M.; Wang, Y.; Yang, W. Characteristics of Dissolved Organic Matter as Affected by Decomposition of Different Organic Materials in Alpine Wetland. Agronomy 2024, 14, 1979. https://doi.org/10.3390/agronomy14091979
Song Y, Li M, Wang Y, Yang W. Characteristics of Dissolved Organic Matter as Affected by Decomposition of Different Organic Materials in Alpine Wetland. Agronomy. 2024; 14(9):1979. https://doi.org/10.3390/agronomy14091979
Chicago/Turabian StyleSong, Yueguang, Meng Li, Yifei Wang, and Weishan Yang. 2024. "Characteristics of Dissolved Organic Matter as Affected by Decomposition of Different Organic Materials in Alpine Wetland" Agronomy 14, no. 9: 1979. https://doi.org/10.3390/agronomy14091979