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| 溶解有机物的光降解及其对浮游细菌和浮游植物的影响 |
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周伟华1,2, 廖健祖1,2,3, 郭亚娟1,2,3, 袁翔城1,2, 黄 晖1,2, 刘 胜1,2, 李 涛1,2
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1.中国科学院南海海洋研究所 热带海洋生物资源与生态重点实验室;2.中国科学院海南热带海洋生物实验站;3.中国科学院大学
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| 摘要: |
| 作为海洋中最大的动态有机碳储库, 溶解有机物的光降解(主要是紫外波段)对生源要素的生物地球化学循环以及海洋生态系统的结构和功能具有重要的影响。本文探讨了影响溶解有机物光降解的环境因素、其光化学过程和产物, 并重点阐述了溶解有机物的光降解对浮游细菌和浮游植物的影响。溶解有机物的来源和成分复杂, 其光降解在不同海区有不同的生态效应, 为了能更准确地把握其生态效应, 需要更全面和深入的研究。 |
| 关键词: 溶解有机物 光降解 紫外线 浮游细菌 浮游植物 |
| DOI：10.11759/hykx20151214003 |
| 分类号: |
| 基金项目:国家自然科学基金(No.31370500, No.40806050, No.31370499) |
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| Photodegradation of dissolved organic matter and its effect on bacterioplankton and phytoplankton |
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ZHOU Wei-hua,LIAO Jian-zu,GUO Ya-juan,YUAN Xiang-cheng,HUANG Hui,LIU Sheng,LI Tao
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| Abstract: |
| As the largest dynamic reservoir of organic carbon in the ocean, photodegradation of dissolved organic matter (DOM) under ultraviolet radiation (UV) has important effects on the biogeochemical cycles of biogenic elements, as well as on the structure and function of the marine ecosystem. This article summarizes the environmental factors that affect the photodegradation processes and products of DOM. In addition, the effects of photodegradation of DOM on bacterioplankton and phytoplankton are discussed. Owing to the different sources and complex compositions of DOM, the ecological effects of photodegradation are spatially different. Hence, further comprehensive studies are crucially needed to evaluate the ecological effects of photodegradation of DOM in different sea areas. |
| Key words: dissolved organic matter photodegradation ultraviolet radiation bacterioplankton phytoplankton |