Impact of Submerged Macrophytes on Behavior of Organic Carbon and Nutrients: An Experimental Study

Q3 Environmental Science Journal of Water and Environment Technology Pub Date : 2021-01-01 DOI:10.2965/JWET.20-088

K. Wada, N. Kishimoto, I. Somiya, Toshihiko Sato, K. Ueno

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Abstract

The aim of this study was to survey the behavior of water quality and surface sediment during the growth period of submerged macrophytes. Their dynamics were investigated by a microcosm experiment. In midsummer, the nitrogen and phosphorus concentration of the column with vegetation (Column A) was kept low and the inorganic nitrogen loading in the first 15 days was about 3 times lower than that of the column without vegetation (Column B). The vegetated column prevented algal blooms in midsummer and was checked to see zooplankton and zoobenthos during the biological active period. The rate of change of masses of carbon and nutrients in the sediment before and after the column experiment were calculated on the basis of the contents of each and sediment thickness (0 to 5 cm). Masses of organic carbon in Column A and Column B in the sediment after 100 days were estimated to decrease by 14 and 23%, respectively. Masses of nitrogen in Column A and Column B in the sediment after 100 days were estimated to decrease by 11 and 26%, respectively. Thus, the mass reduction rate of the vegetated column was 10 to 16% less than that of the column without vegetation.

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沉水植物对有机碳和养分行为影响的实验研究

本研究的目的是调查沉水植物生长期间的水质和地表沉积物的变化。通过微观实验研究了它们的动力学。盛夏有植被柱(A柱)氮磷浓度较低，前15 d无机氮负荷约为无植被柱(B柱)的3倍。盛夏有植被柱防止了藻华，生物活化期检查浮游动物和底栖动物。根据各组分的含量和沉积物厚度(0 ~ 5 cm)计算柱实验前后沉积物中碳和营养物质的质量变化率。100 d后沉积物中A柱和B柱的有机碳质量分别减少了14%和23%。100 d后沉积物中A柱和B柱的氮质量分别下降了11%和26%。因此，植被柱的质量减少率比无植被柱的质量减少率低10 ~ 16%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.