降雨期间养分输入对Atsumi湾浮游植物生长影响的评价

Q3 Environmental Science

Journal of Water and Environment Technology Pub Date : 2020-01-01 DOI:10.2965/jwet.19-025

Teuku Mahlil, Takanobu Inoue, K. Yokota

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引用次数: 2

摘要

富营养化是一个全球性的环境问题，在日本爱知县的Atsumi湾进行了40多年的研究。流域和河口营养物的分布受气象因素尤其是降雨的强烈影响。我们在2010年夏季的观测发现，降雨期间河流的高流量改变了整个海湾的营养物浓度，并且由于浮游植物对营养物的吸收，进一步导致了赤潮。为了研究河口的营养动态和浮游植物生长，重点研究降雨期间河流输入的影响，我们建立了一个深度平均的二维生态模型。该模型具有模拟营养动态的能力，以溶解的营养浓度的形式，以及整个河口的浮游植物生长。模型计算结果合理，与实测数据吻合较好。我们的评估表明，与降雨前相比，降雨后溶解营养物质有效性的增加和有利的辐照度刺激了海湾浮游植物的生产。

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Evaluation of Phytoplankton Growth in Atsumi Bay as an Effect of Nutrient Input during Rainfall

Eutrophication is a global environmental issue and has been studied for more than 40 years in Atsumi Bay, Aichi Prefecture, Japan. The distribution of nutrients in watersheds and estuaries is strongly influenced by meteorological factors, especially rainfall. Our observations in summer 2010 found that high river discharges during rainfall altered nutrient concentrations throughout the bay, and furthermore resulted in a red tide due to nutrient uptake by phytoplankton. In order to study nutrient dynamics and phytoplankton growth in estuaries, with a focus on the effects of river inputs during rainfall, we developed a depth-averaged two-dimensional ecological model. The model was conceived with the ability to simulate nutrient dynamics, in the form of dissolved nutrient concentrations, and phytoplankton growth throughout an estuary. The model provided reasonable results and agreed well with observed data. Our evaluation showed that the increase in availability of dissolved nutrients and favorable irradiance post-rainfall stimulated production of phytoplankton in the bay, compared to pre-rainfall.

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来源期刊

Journal of Water and Environment Technology Environmental Science-Water Science and Technology

CiteScore

1.80

自引率

0.00%

发文量

审稿时长

43 weeks

期刊介绍： The Journal of Water and Environment Technology is an Open Access, fully peer-reviewed international journal for all aspects of the science, technology and management of water and the environment. The journal’s articles are clearly placed in a broader context to be relevant and interesting to our global audience of researchers, engineers, water technologists, and policy makers. JWET is the official journal of the Japan Society on Water Environment (JSWE) published in English, and welcomes submissions that take basic, applied or modeling approaches to the interesting issues facing the field. Topics can include, but are not limited to: water environment, soil and groundwater, drinking water, biological treatment, physicochemical treatment, sludge and solid waste, toxicity, public health and risk assessment, test and analytical methods, environmental education and other issues. JWET also welcomes seminal studies that help lay the foundations for future research in the field. JWET is committed to an ethical, fair and rapid peer-review process. It is published six times per year. It has two article types: Original Articles and Review Articles.