海水温度对衰亡期浒苔释放生源硫影响的模拟研究

韩露; 邓雪; 李培峰; 高先池; 刘春颖

doi:10.3969/j.issn.0253-4193.2018.10.011

海水温度对衰亡期浒苔释放生源硫影响的模拟研究

doi: 10.3969/j.issn.0253-4193.2018.10.011

1.
中国海洋大学化学化工学院, 山东青岛 266100;中国海洋大学海洋化学理论与工程技术教育部重点实验室, 山东青岛 266100
2.
中国海洋大学化学化工学院, 山东青岛 266100

基金项目: 国家自然科学基金（41676065）；国家重点研发计划（2016YFA0601301）；高校自主基金（201762032）。

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出版历程
- 收稿日期: 2018-03-23
- 修回日期: 2018-06-13

Effects of temperature on biogenic sulfur production of Ulva prolifera during the decline period

1.
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;Key Laboratory of Marine Chemistry Theory and Technology/Ministry of Education, Ocean University of China, Qingdao 266100, China
2.
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China

摘要

摘要: 为研究浒苔释放生源硫的特征，本文对采集于黄海绿潮中期和末期的浒苔进行了实验室模拟培养，探讨了不同温度对衰亡期浒苔释放生源硫化物的影响。实验结果表明，在10~25℃温度范围内，温度升高能够加速浒苔的衰亡。二甲基硫（DMS）的平均释放速率范围为2.79~150.70 nmol/（L·g·d），二甲基硫基丙酸内盐（DMSP）的平均释放速率范围为2.16~113.26 nmol/（L·g·d）。温度升高能够使DMS和DMSP的释放速率加快，释放量增加，DMS最大平均释放速率在25℃条件下比10℃条件下升高了约60%，培养液中DMS浓度升高了2~3倍。采集于绿潮末期的浒苔培养液中的DMS和DMSP和采集于绿潮中期的浒苔相比，浓度有所增加，采集于浒苔绿潮末期浒苔培养液中DMS的最高平均浓度为418.41 nmol/L，约为中期的4倍；DMSP的最高平均浓度为316.14 nmol/L，是中期的3倍。浒苔绿潮的爆发会对水体中的硫体系循环产生影响，进而影响该海域生态环境。
- 浒苔 /
- 衰亡 /
- 温度 /
- 二甲基硫 /
- 二甲基巯基丙酸内盐
Abstract: In order to study the characteristics of the release of biogenic sulfur of Ulva prolifera, laboratory simulations were conducted on the Ulva prolifera collected in the middle and late green tides of the Yellow Sea. The effects of different temperatures on the release of biogenic sulfides from Ulva prolifera were investigated. The results are as follows:under the condition of 10-25℃, the increase of temperature can promote the decline of Ulva prolifera. The average release rate of DMS ranged from 2.79-150.70 nmol/(L·g·d), the average release rate of DMSP ranged from 2.16-113.26 nmol/(L·g·d). On the other hand, the high temperature can accelerate the releasing rates of dimethysulfide (DMS) and dimethylsulfonionpropionate (DMSP), and increase the releasing amount. The maximum average release rate of DMS is increased by about 60% at 25℃ compared with 10℃, and the concentration of DMS in culture fluid is increased by 2-3 times. The concentration of DMS and DMSP collected in the culture fluid of Ulva prolifera at the end of green tide was increased compared with that of Ulva prolifera taken during the mid-green tide. The highest concentration of DMS in the culture fluid at the end of green tide of Ulva prolifera was 418.41 nmol/L, which was about 4 times of that in the middle period. The highest concentration of DMS in DMSP was 316.14 nmol/L, which was 3 times of the middle period. The outbreak of the green tide of the Enteromorpha will affect the circulation of the sulfur system in the water body and thus affect the ecological environment of the sea area.
- Ulva prolifera /
- decline /
- temperature /
- dimethysulfide (DMS) /
- dimethylsulfonionpropionate (DMSP)

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