钦州湾枯水期和丰水期分粒级Chl a的分布及影响因素
发布时间：2019-03-29 10:56
【摘要】：分别于2014年3月(枯水期)和7月(丰水期)对钦州湾海区Chl a浓度分布及其粒级组成进行了分析。结果表明,研究区域两个时期都具有较高氮浓度和氮磷比,枯水期磷酸盐浓度高于丰水期,Chl a浓度及其粒径结构差异显著。枯水期Chl a浓度(1.70±0.74μg/L)显著低于丰水期浓度(7.81±3.63μg/L)(p0.01)。优势粒级从枯水期Nano级Chl a(51.8±14.0%)向丰水期Pico级(50.4±17.4%)演变。Pico级与Micro级共同构成了丰水期的Chl a浓度高值,两个时期Nano级Chl a浓度无明显差别。Nano级Chl a对总Chl a浓度的贡献存在着自枯水期优势(51.8±14.0%)至丰水期降低(15.5±9.2%)的动态变化。通过与营养盐和盐度等因子的相关分析,可知浮游植物粒级组成的差异与钦州湾陆地径流的输入、营养盐浓度变动及高密度牡蛎养殖密切相关。
[Abstract]:The distribution of Chl a concentration and its grain size composition in Qinzhou Bay were analyzed in March 2014 (low water season) and July (high water season). The results showed that there were higher nitrogen concentration and nitrogen-phosphorus ratio in the two periods of study area. The concentration of phosphate in low-water period was higher than that in high-water period, and the difference of, Chl a concentration and particle size structure was significant. The concentration of Chl a in low water period (1.70 卤0.74 渭 g / L) was significantly lower than that in high water season (7.81 卤3.63 渭 g / L) (p0.01). The dominant grain size changed from Nano grade Chl a (51.8 卤14.0%) to Pico grade (50.4 卤17.4%) in low water season. Pico grade and Micro grade together constituted high Chl a concentration in high water season. There was no significant difference in Chl a concentration of Nano grade between the two periods, but the contribution of nano Chl a to total Chl a concentration varied from 51.8 卤14.0% in low water period to 15.5 卤9.2% in high water season. According to the correlation analysis with nutrient and salinity factors, the difference of phytoplankton grain size is closely related to the input of land runoff, the variation of nutrient concentration and the culture of high density oyster in Qinzhou Bay.
【作者单位】： 广西民族大学广西高校微生物与植物资源利用重点实验室;广西壮族自治区海洋环境监测中心站;漳州市龙文区环境保护监测站;
【基金】：广西民族大学科研项目(2013MDQN041);广西民族大学相思湖青年学者创新团队(2014)联合资助项目 国家自然科学基金项目(41466001) 广西科学研究与技术开发计划项目(桂科合14125008-2-8,桂科攻1598016-6) 广西自然科学基金项目(2015GXNSFBA139194)
【分类号】：P734
，
本文编号：2449460
[Abstract]:The distribution of Chl a concentration and its grain size composition in Qinzhou Bay were analyzed in March 2014 (low water season) and July (high water season). The results showed that there were higher nitrogen concentration and nitrogen-phosphorus ratio in the two periods of study area. The concentration of phosphate in low-water period was higher than that in high-water period, and the difference of, Chl a concentration and particle size structure was significant. The concentration of Chl a in low water period (1.70 卤0.74 渭 g / L) was significantly lower than that in high water season (7.81 卤3.63 渭 g / L) (p0.01). The dominant grain size changed from Nano grade Chl a (51.8 卤14.0%) to Pico grade (50.4 卤17.4%) in low water season. Pico grade and Micro grade together constituted high Chl a concentration in high water season. There was no significant difference in Chl a concentration of Nano grade between the two periods, but the contribution of nano Chl a to total Chl a concentration varied from 51.8 卤14.0% in low water period to 15.5 卤9.2% in high water season. According to the correlation analysis with nutrient and salinity factors, the difference of phytoplankton grain size is closely related to the input of land runoff, the variation of nutrient concentration and the culture of high density oyster in Qinzhou Bay.
【作者单位】： 广西民族大学广西高校微生物与植物资源利用重点实验室;广西壮族自治区海洋环境监测中心站;漳州市龙文区环境保护监测站;
【基金】：广西民族大学科研项目(2013MDQN041);广西民族大学相思湖青年学者创新团队(2014)联合资助项目 国家自然科学基金项目(41466001) 广西科学研究与技术开发计划项目(桂科合14125008-2-8,桂科攻1598016-6) 广西自然科学基金项目(2015GXNSFBA139194)
【分类号】：P734
，
本文编号：2449460
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