松嫩平原现代浅水湖泊藻类组合与水体、底泥的耦合关系

Coupled relationship between algal assemblages and water, surface sediments in modern shallow lakes of the Songnen Plain

王雪 张新荣 刘嘉康 付秀丽 苏杨鑫

WANG Xue ZHANG Xinrong LIU Jiakang FU Xiuli SU Yangxin

大庆油田有限责任公司 勘探开发研究院, 黑龙江 大庆 163712 吉林大学 地球科学学院, 长春 130026 自然资源部东北亚矿产资源评价重点实验室, 长春 130026 吉林省油页岩与共生能源矿产重点实验室, 长春 130026

Research Institute of Exploration & Development, Daqing Oilfield Co. Ltd., Daqing, Helongjiang 163712, China College of Earth Science, Jilin University, Changchun, Jilin 130026, China Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources, Changchun, Jilin 130026, China Key Laboratory of Oil Shale and Paragentic Minerals of Jilin Province, Changchun, Jilin 130026, China

为探究中新生代陆相湖盆页岩有机质富集影响因素，根据藻类在生烃物质中的重要性，从现代湖泊沉积角度出发，采用藻类组合、水体理化性质、底泥粒度、磁化率和色度的皮尔逊相关分析等方法，研究了松嫩平原中内泡中现代藻类组合与水体和底泥之间的耦合关系。研究发现，地形和风场对半封闭混合型弱酸性微咸水湖有机质富集存在一定影响。中内泡不同位置蓝藻、绿藻、硅藻丰度的不同受水温影响，与底泥分选程度存在一定关系，水温和底泥分选程度显著受控于当地风场的干扰。

In order to study the influencing factors for the enrichment of organic matter in Mesozoic and Cenozoic shale in lacustrine basins, the Pearson analyses of algal assemblages, physical and chemical properties of water body, sedimentary grain size, magnetic susceptibility and chromaticity were carried out from the aspect of modern lacustrine deposition. The coupled relationship between modern algal assemblages and water body, surface sediments in the Zhongnei Lake, which is a semi-enclosed shallow lake in the Songnen Plain, showed that topography and wind field affected the enrichment of organic matter in semi-enclosed brackish lakes with acidic and mixed water bodies. In different sites of the Zhongnei Lake, the abundance of cyanobacteria, green algae and diatoms are affected by water temperature and has a certain relationship with the degree of sediment sorting. Water temperature and sediment sorting are significantly controlled by the interference of local wind field.

国家自然科学基金项目 41472173;国家自然科学基金项目 40702027

https://doi.org/10.11781/sysydz202301080