Hydrodynamic impact on trace metals in sediments in the cascade reservoirs, North China

Li, Yanyan; Gao, Bo; Xu, Dongyu; Peng, Wenqi; Liu, Xiaobo; Qu, Xiaodong; Zhang, Min

doi:10.1016/j.scitotenv.2020.136914

Cited by 33 publications

(15 citation statements)

References 39 publications

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“…Suzhou city is located in the north of Anhui Province, with a population of 6.5 million and an area of 9787 km 2 . This area has a warm temperate semi humid climate with four distinct seasons, windy and cold in winter, hot and rainy in summer.…”

Section: Study Areamentioning

confidence: 99%

“…With the rapid development of urbanization and industrialization, heavy metal pollution in sediments of rivers, lakes and other waters has become a global problem, and has been widely concerned because of the characteristics of heavy metals, such as enrichment, concealment, persistence and toxicity [1]. Sediment is an important part of aquatic ecosystem, which is not only the material basis for the growth of benthos and aquatic plants [2], but also the source of heavy metals and other pollutants. When the environmental conditions (oxidation-reduction potential, pH, human disturbance and so on) change, heavy metals may be released from the sediment to the overlying water body, causing secondary pollution, thus affecting the water environment quality [3].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Characteristics and Source Analysis of Heavy Metals in the Sediment of Water Area of Urban Scenic: A Case Study of the Delta Park in Suzhou City, Anhui Province, China

Jiang¹,

Gui²,

Chen³

et al. 2021

Pol. J. Environ. Stud.

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Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Characteristics and Source Analysis of Heavy Metals in the Sediment of Water Area of Urban Scenic: A Case Study of the Delta Park in Suzhou City, Anhui Province, China

Jiang¹,

Gui²,

Chen³

et al. 2021

Pol. J. Environ. Stud.

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“…The RI of HYER was higher than that of XFJR. The highest RI value of HMs was 40.86 , which is similar Fengshu Dam area ( upper reaches of East River), probably because of the dam's interception and spillage effect (Li et al, 2020).…”

Section: Source Identificationmentioning

confidence: 75%

Heavy Metals and Arsenic in Sediments of Xinfengjiang Reservoir in South China: Levels, Source Identification and Health Risk Assessment

Li³

et al. 2020

Appl Env Biotechnol

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Xinfengjiang Reservoir (XFJR) is the largest drinking water source in the southern China, and plays a vital role in supporting the development of China's Pearl River delta. The levels, source identification, potential ecological risks and health risk of eight metal elements including Zn, Pb, Ni, Mn, Cu, Cr, Cd and As in the sediments of the XFJR and Heyuan section of the East River (HYER) were investigated.

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“…The corresponding reservoir surface areas are 70 km 2 and 40 km 2 , respectively. In addition, the long term annual streamflow is about 2.45 billion m 3 and has transferred 19.22 billion m 3 water to Tianjin over 26 years [5,31]. The daily average temperature is between −14.7 and 31 °C over 30 years.…”

Section: Study Areamentioning

confidence: 99%

“…The Panjiakou (PJK) and Daheiting (DHT) reservoirs were built at the middle reach of the Luanhe River in Hebei Province and jointly operated for water storage and regulation ( Figure 1). Water from the cascade reservoirs subsequently flows into the Yuqiao reservoir in Tianjin [4,5]. The construction of this project significantly improved the quality of life for people in Tianjin.…”

Section: Introductionmentioning

confidence: 99%

The Long-Term and Retention Impacts of the Intervention Policy for Cage Aquaculture on the Reservoir Water Qualities in Northern China

Kang

Yin

Cui

et al. 2020

Water

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To ensure the safety of the water supply of the Panjiakou reservoir, in 2016, the Chinese central government comprehensively banned the fishing cage culture that had lasted for almost 30 years. However, the long-term effects and retention impacts of the government’s mandatory intervention on the reservoir water quality are unknown. To determine the reservoir water quality, we employed statistical methods along with the mathematical model to investigate the internal relationship since the construction of the reservoir. We applied seasonal trend decomposition using loess (STL) to explore the long-term and seasonality trend of monthly total nitrogen (TN) and total phosphorous (TP). To separate the impact of upstream water quality changes from cage culture on reservoir water quality, we employed generalized additive models (GAMs). We created a model, the LAKE2K model, to investigate the internal sources of the sediment that accumulated during the aquaculture period and its retardant effect. The results revealed that the concentration of upstream TN was more affected by non-point sources than by TP. The long-term policy of encouraging aquaculture has greatly contributed to the increase in the reservoir TP concentration rather than an increase in TN; the prohibition of cage aquaculture has resulted in a sharp drop in TP. After the ban, the sediment became the main source of TP. We suspect that the TP concentration of the reservoir and sediment will decrease gradually until a new equilibrium is reached within 10 years. This study offers lake managers an opportunity to increase their insight into the interaction of management measures with water quality and provides valuable information for the natural recovery of the eutrophic system.

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Hydrodynamic impact on trace metals in sediments in the cascade reservoirs, North China

Cited by 33 publications

References 39 publications

The Characteristics and Source Analysis of Heavy Metals in the Sediment of Water Area of Urban Scenic: A Case Study of the Delta Park in Suzhou City, Anhui Province, China

The Characteristics and Source Analysis of Heavy Metals in the Sediment of Water Area of Urban Scenic: A Case Study of the Delta Park in Suzhou City, Anhui Province, China

Heavy Metals and Arsenic in Sediments of Xinfengjiang Reservoir in South China: Levels, Source Identification and Health Risk Assessment

The Long-Term and Retention Impacts of the Intervention Policy for Cage Aquaculture on the Reservoir Water Qualities in Northern China

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