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| 1 | 象山港溶解无机氮环境容量研究显示文摘综合考虑凫溪、颜公河、郭巨大碶等10个陆源污染物入海口的影响,建立了象山港三维水质模型并对该海域溶解无机氮(Dissolved Inorganic Nitrogen,DIN)时空分布进行了数值模拟。结合象山港海域功能区划要求,通过调整各入海口DIN最低排海浓度(Rmin)的取值范围设置了四类情境,基于排海通量最优化法计算了对应情境下象山港DIN的环境容量。结果表明,象山港DIN环境容量随Rmin的增大而减小,其范围介于127.16~274.17 t/a;同时Rmin的增大也导致各入海口DIN排海通量需要削减,按削减优先程度,可将各入海口划分为Ⅰ、Ⅱ、Ⅲ、Ⅳ四级,入海口所处海域水体半交换时间越长、DIN年排海通量越大,相应的削减优先程度越高。 | 郑军勇 毛新燕 生小萱 孙健安 江文胜 | 2020 | 海洋科学2020，44，4： | 2 |
| 2 | 大亚湾水质对人类活动响应的关键控制指标识别和量化解析显示文摘随着沿海地区经济和人口的不断发展,人类活动对海湾水质状况的影响日渐加剧。本文以大亚湾为研究对象,以近20年的调查统计数据为基础,综合运用变异系数评价、双变量相关性分析、主成分分析、线性回归分析等方法,对影响大亚湾水质的人为压力要素和海域承压要素所包含的指标进行筛选;将自身变动幅度较大且对大亚湾水质产生主要影响的指标识别为关键控制指标,并通过承载力占比的计算对关键控制指标进行量化解析,继而对指标产生的水质效应进行定量评价。结果表明,人为压力要素中的围填海面积、生活污水排放量和工业废水排放量这3个指标的变异性大、主成分综合载荷数较高且与大亚湾海域的主要污染物溶解无机氮含量的年际变化有显著相关性,是影响大亚湾水质的关键控制指标。对这3个指标进行承载力占比计算的结果显示,围填海面积、生活污水排放量和工业废水排放量的承载力占比分别为6.19%、5.07%和17.51%,其中工业废水排放的占比最高,对海湾承载力的影响最大。以上研究显示,人类活动是造成大亚湾水质恶化的主要原因,为有效改善大亚湾的海洋环境质量、提高管理水平,应从岸线整治修复和陆源排污(尤其是工业废水的排放)控制入手,科学制定管理方案,推动大亚湾地区的可持续发展。 | 姜迅 武文 宋德海 | 2023 | 热带海洋学报2023，42，1： | 1 |
| 3 | Seasonal and regional diff erences in long-term changes in large mesozooplankton(>505μm)biomass and abundance in a semi-enclosed subtropical bay显示文摘Obvious spatiotemporal heterogeneity is a distinct characteristic of ecosystems in subtropical bays.To aid targeted management and ecological restoration in long and narrow semi-enclosed subtropical bays,we analyzed seasonal and regional differences in long-term changes(1980-2019)in the biomass and abundance of large mesozooplankton(LMZ;>505μm)in Xiangshan Bay,Zhejiang,China.We found spatiotemporal heterogeneity in the historical changes of LMZ.Significant negative trends in LMZ biomass were found in the inner and middle bay during the warm season(summer and autumn),when the nutrient concentration(especially dissolved inorganic nitrogen)and temperature increased simultaneously.Nutrient changes in Xiangshan Bay began in the late 1980s or early 1990s,coinciding with large-scale fish cage development.A rapid decline in LMZ biomass occurred after 2005 when power plants commenced operation,accelerating the warming trend.Therefore,the joint stress of eutrophication and warming likely precipitated the decline in LMZ biomass.Conversely,a significant increase in LMZ biomass was found in the outer bay in spring.This trend was consistent with the trend of LMZ biomass near the Changjiang(Yangtze)River estuary,which indicates that the pelagic ecosystem in the outer bay was aff ected by water from the Changjiang River estuary during spring.Based on our results,ecosystem management and restoration in semi-enclosed subtropical bays should focus on internal waters,which have a poor capacity for water exchange.For Xiangshan Bay,the changes in the Changjiang River estuary ecosystem during the cold season(winter and spring)should also be considered. | Ping DU Zhibing JIANG Yuanli ZHU Yibo LIAO Quanzhen CHEN Jiangning ZENG Lu SHOU | 2021 | Journal of Oceanology and Limnology2021，39，6： | 0 |
| 4 | Ecological thresholds of phytoplankton community across environmental gradients in the harmful algal blooms-frequently-occurring,subtropical coastal waters,East China Sea显示文摘Phytoplankton communities can response immediately and directly to environmental changes,and thus have been applied as reliable biotic indicators in aquatic systems.This study provided insights into the relationships concerning ecological thresholds of phytoplankton communities and individual taxon in response to environmental changes in coastal waters of northern Zhejiang Province,East China Sea.Results demonstrated that there existed seasonal variations of phytoplankton community ecological thresholds of which spring being higher than those in summer.As for individual species,Prorocentrum donghaiense and Noctiluca scintillans were identified as the most tolerant and sensitive indicator species in spring and summer,respectively.They exhibited strong indications in response to environmental changes.These findings highlighted that phytoplankton community structure in this region was stable when environmental gradients were below the thresholds of sensitive species,whereas potential harmful algal blooms may occur when environmental gradients exceeded the thresholds of tolerant species. | Ran Ye Chunying Ge Qiong Wang Qing Xu Guofeng Xu Yongkang Yan Mingli Qin Yanhong Cai Yuejun Fei | 2021 | Acta Oceanologica Sinica2021，40，6： | 0 |
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