The Bioavailability Characteristics of CDOM in Lake Hongze and Lake Luoma under Different Hydrological Scenarios
文献类型：期刊论文
| 作者 | Zhang Liu-qing; Kai, Peng; Yang Yan; Shi Yu; Li Yuan-peng; Zhou Lei; Zhou Yong-qiang; Zhang Yun-lin |
| 刊名 | SPECTROSCOPY AND SPECTRAL ANALYSIS
 |
| 出版日期 | 2020 |
| 卷号 | 40期号:1页码:85-90 |
| 英文摘要 | We investigated the bioavailability characteristics of chromophoric dissolved organic matter (CDOM) in different hydrological scenarios of Lake Hongze and Lake Luoma using bio-incuhation experiments coupled with excitation-emission matrices and parallel factor analysis (EEMs-PARAFAC). The results showed that (1) Three fluorescent components were obtained using PARAFAC, including a humic-like C1, a tryptophan-like C2 and a tyrosine-like C3. (2) After 28 days of bio-incubation, the bioavailability of dissolved organic carbon (BDOC) in Lake Hongze and Lake Luoma in dry season (17% +/- 4% and 15%+/- 4%) was higher than that in flood season (5%715% and 10% +/- 7%) , and the high %BDOC values of the two lakes were mainly distributed in the inflowing river mouths. (3) The specific absorbance at 254 nm SUVA(254) and humic-like components in the two lakes during dry season was significantly higher than that pre-bio-incubation, and Delta SUVA(254) and Delta C1 were negative. The tyrosine-like component was significantly lower than that pre-bio-incubation and Delta C3 was positive, indicating that the microorganisms preferentially utilized the less stable tyrosine-like component in the dry season, and produced more stable humic-like C1 and also increased the humification of the samples collected from the two lakes. (4) There were significant negative correlations between BDOC, %BDOC and Delta SUVA(254), Delta C3, %Delta C3, respectively. These results indicated that CDOM optical composition directly affects its bioavailability in the two lakes. |
| 源URL | [http://159.226.73.51/handle/332005/20203]  |
| 专题 | 中国科学院南京地理与湖泊研究所 |
| 推荐引用方式 GB/T 7714 | Zhang Liu-qing,Kai, Peng,Yang Yan,et al. The Bioavailability Characteristics of CDOM in Lake Hongze and Lake Luoma under Different Hydrological Scenarios[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2020,40(1):85-90. |
| APA | Zhang Liu-qing.,Kai, Peng.,Yang Yan.,Shi Yu.,Li Yuan-peng.,...&Zhang Yun-lin.(2020).The Bioavailability Characteristics of CDOM in Lake Hongze and Lake Luoma under Different Hydrological Scenarios.SPECTROSCOPY AND SPECTRAL ANALYSIS,40(1),85-90. |
| MLA | Zhang Liu-qing,et al."The Bioavailability Characteristics of CDOM in Lake Hongze and Lake Luoma under Different Hydrological Scenarios".SPECTROSCOPY AND SPECTRAL ANALYSIS 40.1(2020):85-90. |
入库方式： OAI收割
来源：南京地理与湖泊研究所
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