Optical characteristics and factors that influence representative Lakes in the Taihu Lake basin, China

IF 1.3 4区环境科学与生态学 Q3 ECOLOGY

Journal of Freshwater Ecology Pub Date : 2022-02-28 DOI:10.1080/02705060.2022.2045231

W. Ren, Xiaodong Wu, J. Chao, Xuguang Ge, Shunmei Zhu, Mengdie Zhou

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Abstract

Abstract From 2018 to 2019, a survey of a typical lakes system in the Taihu Lake basin, China, was carried out. To provide reference values for the restoration and management of submerged vegetation in the lakes, the optical attenuation coefficient (Kd ) and euphotic depth (Zeu ) of the water body were calculated, and the distribution characteristics and factors that influenced the underwater optical field lands with different nutrition levels in the basin were analyzed. The main factor affecting the distribution of photosynthetically active radiation (PAR) in lakes in the Taihu Lake basin is suspended solids (SS), dominated by inorganic suspended matter (ISS). Chlorophyll a (Chl-a), dissolved organic carbon (DOC), and chromophoric dissolved organic matter (CDOM) all affect, although weakly, the optical characteristics of lake wetlands. In CDOM, humic-like components have a more significant impact on Kd . The Kd of lakes in the Taihu Lake basin is closely related to permanganate index (CODMn) and especially total phosphorus (TP); The growth of aquatic vegetation is increased in Shanghu, Dianshan-Yuandang, Yangcheng, and Wuli Lakes that have higher Zeu and Zeu /Depth values.

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太湖流域代表性湖泊的光学特征及其影响因素

2018 - 2019年，对太湖流域典型湖泊系统进行了调查。为了给湖泊淹没植被的恢复和管理提供参考，计算了水体的光学衰减系数(Kd)和光场深度(Zeu)，分析了流域不同营养水平水下光场地的分布特征及影响因素。影响太湖流域湖泊光合有效辐射(PAR)分布的主要因子是悬浮物(SS)，以无机悬浮物(ISS)为主。叶绿素a (Chl-a)、溶解有机碳(DOC)和显色性溶解有机质(CDOM)均对湖泊湿地的光学特性有微弱影响。在CDOM中，腐殖质样组分对Kd的影响更为显著。太湖流域湖泊的Kd与高锰酸盐指数(CODMn)，特别是与总磷(TP)密切相关;在Zeu和Zeu /Depth值较高的上湖、淀山-源塘、羊城和五里湖，水生植被生长加快。

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 Freshwater Ecology 生物-湖沼学

CiteScore

2.20

自引率

7.70%

发文量

审稿时长

3 months

期刊介绍： The Journal of Freshwater Ecology, published since 1981, is an open access peer-reviewed journal for the field of aquatic ecology of freshwater systems that is aimed at an international audience of researchers and professionals. Its coverage reflects the wide diversity of ecological subdisciplines and topics, including but not limited to physiological, population, community, and ecosystem ecology as well as biogeochemistry and ecohydrology of all types of freshwater systems including lentic, lotic, hyporheic and wetland systems. Studies that improve our understanding of anthropogenic impacts and changes to freshwater systems are also appropriate.