Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China.
Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, P.R. China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, Shandong 266071, PR China; Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, Shandong 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
Mar Pollut Bull. 2022 Feb;175:113171. doi: 10.1016/j.marpolbul.2021.113171. Epub 2021 Nov 26.
Analysis of the common and most influential natural and anthropogenic activities on the spatiotemporal variation in nutrients at a multiannual scale is important. Eleven cruises from 2015 to 2017 were carried out to better elucidate the seasonal and spatial variations in nutrients, as well as the impact factors on dissolved inorganic nitrogen (DIN), phosphorus (DIP) and silicate (DSi). Both nutrient concentrations and forms showed similar and significant seasonal variations over the 3 years, and were closely related to the biomass and species of phytoplankton. Terrestrial inputs had significant effects on the spatial distribution of nutrients throughout the year, especially in the surface water, which showed DIN > DIP>DSi. In summer, shellfish aquaculture and hypoxia jointly affected the spatial distribution of nutrients. The bottom water nutrient concentrations in the aquaculture area were 1.1-2.3 times higher than those outside of the aquaculture area. Seasonal hypoxia can increase the release of DSi and NH from the sediment to the water. In summary, anthropogenic activities and physical conditions jointly influenced the nutrient distributions.
分析多种因素在多年时间尺度上对营养盐时空变化的共同和最具影响力的自然和人为活动非常重要。本研究于 2015 年至 2017 年开展了 11 次航次调查，以更好地阐明营养盐的季节性和空间变化，以及溶解无机氮（DIN）、磷（DIP）和硅酸盐（DSi）的影响因素。3 年来，营养盐浓度和形态均表现出相似且显著的季节性变化，与浮游植物的生物量和种类密切相关。陆地输入对全年营养盐的空间分布有显著影响，特别是在表层水中，表现为 DIN>DIP>DSi。在夏季，贝类养殖和缺氧共同影响了营养盐的空间分布。养殖区底层水中的营养盐浓度比养殖区外高 1.1-2.3 倍。季节性缺氧会增加 DSi 和 NH 从沉积物向水中的释放。综上所述，人为活动和物理条件共同影响了营养盐的分布。
