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Chinese Journal of Oceanology and Limnology 2002年第1期20卷 74-80页

作者：吴玉霖周成旭张永山 Institute of Oceanology Chinese Academy of Sciences Qingdao China

Vertical profiles of chl-a and primary productivity in the middle continental shelf area and eddy area of the East China Sea were studied using data from a cruise in the East China Sea in February to March, 1997 and a cruise in July, 1998. The results showed that chl-a vertical distribution closely related to in situ hydrological and nutrient conditions. chla-a concentration ranged from 0.22 to 0.35 mg/m 3 and 0.93-1.09 mg/m 3 in the eddy area and in the middle continental shelf area, respectively. In both areas, chl-a concentrations in deep layers were slightly higher than those in shallow layers, but was of the same order of magnitude. In summer, when a thermocline existed in the water column, highest chl-a concentrations appeared at the base of the thermocline layers in both areas. In the eddy area, chl-a concentration maximized at 3l.743 mg/m 3, and averaged l.143 mg/m 3 below 30 m depth. In the middle continental shelf area, the highest chl-a concentration was 2.120 mg/m 3, the average was 1.168 mg/m 3. The primary productivity reached 1418.76 mgC/(m 2·d) in summer and 1360.69 mgC/(m 2·d) in winter. In the eddy area, the primary productivity was 787.50 mgC/(m 2·d) in summer and 159.04 mgC/(m 2·d) in winter. Vertical carbon sinking rate from the deep layer to the bottom in both areas is also discussed in this paper.

关键词： chl-a primary productivity vertical profile ECS

象山港chl-a的分布及其与环境因子关系研究

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中国海洋大学学报（自然科学版） 2015年第8期45卷 63-70页

作者：蔡惠文卓丽飞吕华庆石钢德浙江海洋学院浙江舟山316022 国家海洋设施养殖工程技术中心浙江舟山316022 宁波市象山港海洋环境监测站浙江宁波315141

根据2012年5、8、10月在象山港海域的监测资料,分析了该海域chl-a的时空分布特征,及其与水温、盐度、溶解氧、COD以及营养盐等主要环境因子的相关关系。结果表明：象山港海域chl-a浓度在0.27~27.29μg/L范围内,平均浓度为2.80μg/L。海... 详细信息

根据2012年5、8、10月在象山港海域的监测资料,分析了该海域chl-a的时空分布特征,及其与水温、盐度、溶解氧、COD以及营养盐等主要环境因子的相关关系。结果表明：象山港海域chl-a浓度在0.27~27.29μg/L范围内,平均浓度为2.80μg/L。海域chl-a浓度的季节性变化非常明显,峰值出现在夏季,而秋季浓度最低;并且具有从内湾港顶向港外逐渐递减的空间分布规律。相关性分析显示,在夏季,影响chl-a含量的主要因素是盐度和溶解氧;在秋季,chl-a与活性磷酸盐和硅酸盐间的相关性非常显著,但与无机氮（DIN）不具显著意义相关关系。总体看来,象山港海域chl-a的时空分布受到海域水动力条件、海水养殖活动等的共同影响,夏季还可能受到台风影响。

关键词：象山港 chl-a 硅酸盐磷酸盐环境因子

基于时间序列的鄱阳湖chl-a预测模型优化构建

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长江科学院院报 2023年第10期40卷 14-21页

作者：钱春龙曾一川袁伟皓吴怡江苏中瑞咨询有限公司南京210036 河海大学环境学院南京210098

为提升鄱阳湖富营养化评估与预测适应性,选择湖区代表性点位2012—2020年的逐月监测作为模型样本训练时间。模型自变量选择水体主要理化参数,并计算其中水质参数部分的综合水质标识指数(WQII)以评价鄱阳湖近年水质演变趋势。进一步地,... 详细信息

为提升鄱阳湖富营养化评估与预测适应性,选择湖区代表性点位2012—2020年的逐月监测作为模型样本训练时间。模型自变量选择水体主要理化参数,并计算其中水质参数部分的综合水质标识指数(WQII)以评价鄱阳湖近年水质演变趋势。进一步地,分别建立响应变量为叶绿素a(chl-a)的多元线性逐步回归方程(MLSR)、季节性自回归求和移动平均模型(SARIMA),并预测所有点位2020年6—8月份的浓度值,与实测值比较以检验两种模型适用程度。结果显示:各代表监测点的综合水质在2018年出现提升且在丰水期更优,平均WQII排序为康山(2.91)>都昌(3.01)>蚌湖(3.11)>蛇山(3.31);SARIMA模型相比于MLSR方程的chl-a浓度预测准确度更高,为大型通江湖泊藻类爆发预警提供了优化理论参考。

关键词：通江湖泊综合水质标识指数法 chl-a SARIMA 逐步回归

维普期刊数据库博看期刊

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基于无人机高光谱遥感的水体chl-a反演

测绘与空间地理信息 2024年第7期47卷 123-125,132页

作者：白立飞山东省地质测绘院山东济南250003

无人机平台搭载高光谱传感器获取的高光谱数据具有高分辨率、波谱丰富的特点,本研究基于实测采样点光谱特征、采样点chl-a浓度,采用相关性分析的方法选取最优波段,构建水体chl-a反演模型,应用于无人机高光谱数据进行chl-a的反演监测。... 详细信息

无人机平台搭载高光谱传感器获取的高光谱数据具有高分辨率、波谱丰富的特点,本研究基于实测采样点光谱特征、采样点chl-a浓度,采用相关性分析的方法选取最优波段,构建水体chl-a反演模型,应用于无人机高光谱数据进行chl-a的反演监测。结果表明:通过分析单波段、一阶微分值与chl-a参数,发现使用674 nm、570nm波长构建的一阶微分与水体chl-a构建的线性反演模型,具有较高的相关性与精度,可满足对小中型地表水体叶绿素的快速反演监测。基于反演结果构建空间分布图,实现水质参数的可视化。

关键词：无人机高光谱遥感 chl-a 反演模型

湛江湾秋季海表叶绿素a浓度时空分布特征及其与环境因子相关关系

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广东海洋大学学报 2021年第6期41卷 25-35页

作者：周敏赵辉广东海洋大学化学与环境学院广东湛江524088 南方海洋科学与工程广东实验室广东湛江524088

【目的】研究湛江湾秋季海表叶绿素a(chl-a)和营养盐浓度的时空分布特征,探讨湾内环境因子对海域浮游植物chl-a调控机制。【方法】根据湛江湾2017―2019年秋季(11月)的3个航次现场调查资料,通过主成分多元线性回归分析和Pearson相关分析... 详细信息

【目的】研究湛江湾秋季海表叶绿素a(chl-a)和营养盐浓度的时空分布特征,探讨湾内环境因子对海域浮游植物chl-a调控机制。【方法】根据湛江湾2017―2019年秋季(11月)的3个航次现场调查资料,通过主成分多元线性回归分析和Pearson相关分析,结合湾南和湾北营养盐结构对海域浮游植物chl-a浓度分布特征进行综合分析。【结果】空间上,秋季湛江湾表层chl-a浓度大致呈湾北低、湾南高,湾内向湾外递减的趋势,营养盐浓度呈湾北向湾南、湾内向湾外递减的趋势。时间上,溶解无机氮(DIN)平均浓度逐年缓慢上升,PO4-P浓度呈逐年下降趋势,SiO3-Si和chl-a走势相同均先增加后降低。营养结构分析表明,海湾浮游植物生长的限制情况2017年主要为氮限制,2018年湾口为氮限制、湾内为磷限制,2019年主要为磷限制,湾口尤其严重。【结论】湛江湾湾北海域受沿岸径流和近岸陆源污染的影响,营养盐浓度较高、chl-a浓度较低;湾南海域受不规则半日潮影响显著,受到人类活动干扰较少,营养盐浓度相对较低、chl-a浓度相对较高。

关键词： chl-a 营养盐相关关系富营养化湛江湾

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Numerical Study of the Three Gorges Dam Influences on chlorophyll-a in the Changjiang Estuary and the Adjacent East China Sea

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Journal of Ocean University of China 2021年第1期20卷 10-22页

作者： CHEN Dongxing LIU Qianqian YIN Kedong School of Marine Sciences/Guangdong Key Laboratory of Marine Resources and Coastal Engineering Sun Yat-sen UniversityGuangzhou 510275China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 510275China Department of Physics and Physical Oceanography University of North Carolina WilmingtonWilmingtonNC 28403USA

The impoundment of the Three Gorges Dam(TGD)has altered downstream hydrological characteristics and sediment discharge,and it has caused ecological impacts,such as changes in chlorophyll-a(chl-a)in estuaries and coastal *** investigate the TGD's influence on chl-a's interannual and seasonal variations in the Changjiang Estuary and the adjacent coastal East China Sea,a physical-biogeochemical model was developed with numerical experiments covering a decade,including TGD's preperiod(pre-TGD,1999–2003)and post-period(post-TGD,2004–2008).The modeling results demonstrate an annual increase in the regional average chl-a from pre-to post-TGD,with the largest increase reaching up to 20.8%in spring in the nearshore region beyond the Changjiang *** spatial variations in chl-a are high,with the largest variation being observed around the 20–40 m *** increase in chl-a is influenced by improved light and nutrient conditions,which is attributed to dam construction and fertilization by human activities.A decline in nitrogen-phosphorus fertilizer usage ratio along the Changjiang River watershed after the TGD's impoundment is another factor that influences the chl-a's *** modeling results also show severe NO3 and PO4 imbalances with a larger N/P ratio during the post-TGD period,especially in regions with large chl-a ***,the greater increase in the usage of phosphorus fertilizer than nitrogen fertilizer influences chl-a's variation and has potential promotion effects on the outbreak of harmful algal bloom events.

关键词： physical-biogeochemical model chl-a coastal ecosystem East China Sea

Nutrient and chlorophyll a anomaly in red-tide periods of 2003-2008 in Sishili Bay, China

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Chinese Journal of Oceanology and Limnology 2011年第3期29卷 664-673页

作者：郝彦菊唐丹玲喻龙邢前国 Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Research Center of Remote Sensing and Marine Ecology/Environment (RSMEE) Key Laboratory of Tropical Marine Environmental Dynamics (LED) South China Sea Institute of Oceanology Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Monitoring and Forecasting Center of the Oceanic Environment of Yantai

Sishili Bay is the most important aquiculture and tourism area for the city of Yantai, China; however, red tides occurred frequently and have caused huge economic losses in this bay in recent years. To gain a better understanding of the local ecological environments in the bay, we conducted this research between 2003 and 2008 to analyze variations in nutrients and chlorophyll （chl-a） during high frequency red tide period （May to September）. The results show that the chl-a concentration increased from 2.70 in 2003 to 7.26 mg/m3 in 2008, while the concentration of total inorganic nitrogen （TIN） and silicate （SiO3-Si） increased lineally from 5.18 and 1.45 pmol/L in 2003 to 18.57 and 9.52 pmol/L in 2008, respectively, and the annual phosphate （PO4-P） varied between 0.15 and 0.46 μmol/L. Special attention was given to a red tide in August 2007 occurred when water temperature was high and nutrient concentrations increased sharply because of a heavy rainfall. Overall, the results show the P limitation in Sishili Bay, and reveal that red tides were caused by eutrophication from terrestrial inputs and local warm weather, particularly during rainy periods. Therefore, to control red tide, greater efforts should be made to reduce sewage discharges into Sishili Bay, particularly during rainfall seasons.

关键词： chl-a TIN PO4-P red tide frequency Sishili Bay

Field Detection of chlorophyll-a Concentration in the Sea Surface Layer by an Airborne Oceanographic Lidar

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Journal of Ocean University of China 2008年第1期7卷 108-112页

作者： LIU Zhishen MA Sen WANG Xin LI Zhigang Ocean Remote Sensing Institute Ocean University of China Qingdao 266003 R R. China

An airborne oceanographic lidar, with a frequency-tripled Q-switched Nd： YAG laser of 355 nm, has been designed to measure chlorophyll-a （chl-a） concentration in the sea surface layer by the Ocean Remote Sensing Institute, OUC. The field experiment was carried out in the bay which is located south of the Liaodong Peninsula on the 10th of September 2005. After the flight, the raw data were processed and analyzed by the fluorescence-to-Raman ratio method with seawater attenuation coefficients calculated from signal profiles. The results of chl-a concentration sea water were also compared with those of chl-a concentration by measurements by lidar are shown. The measurements in clear a Moderate Resolution Imaging Spectroradiometer （MODIS）.

关键词： airborne oceanographic lidar fluorescence Raman seawater attenuation coefficients chl-a MODIS

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香溪河库湾水质特征与非回水区水华响应关系

中国环境科学 2019年第7期39卷 3018-3026页

作者：张庆文宋林旭纪道斌方海涛何金艳霍静刘心愿王耀耀朱晓声三峡大学水利与环境学院

为探究香溪河在受倒灌影响较弱的河段水华暴发征兆及机理,于水华高发期5~8月对香溪河进行监测,分析电导率、水温、叶绿素a(chl-a)以及流速.结果表明,在6~8月,香溪河倒灌现象于XX05点(峡口镇)处基本结束,XX06~XX09受倒灌来水影响较弱;香... 详细信息

为探究香溪河在受倒灌影响较弱的河段水华暴发征兆及机理,于水华高发期5~8月对香溪河进行监测,分析电导率、水温、叶绿素a(chl-a)以及流速.结果表明,在6~8月,香溪河倒灌现象于XX05点(峡口镇)处基本结束,XX06~XX09受倒灌来水影响较弱;香溪河于7月暴发水华,各个监测点位上chl-a含量均值达到100μg/L以上,XX05~XX06与XX07-XX09点位上暴发不同种水华;在水华暴发前后,水体温度无显著变化,且并无明显分层现象,说明水温分层是水华暴发的主要原因这一理论并不能很好的适用于非回水区;通过对电导率数值的研究发现,数值在垂向上出现显著拐点,而拐点出现在临界层与光补偿层之间,同时与叶绿素a含量分布呈现显著负相关性.香溪河总氮(TN)、总磷(TP)平均值为1.849mg/L和0.157mg/L,均超过富营养化的阈值,水体氮磷含量与chl-a浓度无显著相关性,水体中除N、P营养盐外的其它离子对香溪河水华的暴发起着重要作用.在水华消退后,电导率数值又逐渐恢复表层高底层低的垂向线性分布特性,与水华的暴发、消退有着明显的响应.

关键词：香溪河水温电导率水华预测临界层理论 chl-a

EFFECTS OF Fe AND Mn ON THE GROWTH OF A RED TIDE DINOFLAGELLATE SCRIPPSIELLA TROCHOIDEA (STEIN) LOEBLCH Ⅲ

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Chinese Journal of Oceanology and Limnology 1997年第2期15卷 173-180页

作者：秦晓明邹景忠钱培元

Batch culture experiments were conducted with a red tide dinoflagellate Scrippsiella trochoidea(Stein) Loeblch Ⅲ colleted from Jiaozhou Bay, Shandong, China. Growth rates and Cellular chl-a were meas ured in media with iron and manganese ion concentrations controlled at different levels using EdTA-trace metal buffer systems. Cell density increased 3.2 times to 6.5 times over the range of lowest (0 mol/L) to highest(10-5 mol/L) iron and manganese ion concentrations. The range of Cell density response was much lower than the range of total available iron and manganese, which was >100-fold that of Fe. This nonlinear relationship indicates that the cells adapt to make more efficient use of iron and manganese un der limiting conditions. The cellular chl-a content maximized after 3 days incubation and then decreased gradually under either iron or manganese limitation conditions. It indicated that the algae gained higher photosynthesis ability when transferred to a new environment. Growth responses to iron and manganese limitation can be both modeled according to the equation of Monod. The half-saturation constant for growth, k, is 4.6×10-8 mol/L for Fe and 5.1×10-8 mol/L for Mn. Our results showed that the iron availability in Jiaozhou Bay does not limit the growth of S. trochoidea.

关键词： Scrippsiella trochoidea red tide growth rate cellular chl-a trace metals