Migration characteristics of arsenic in sediments under the influence of cascade reservoirs in Lancang River basin

Cheng, Yao; Zhao, Fengxia; Wu, Jinkun; Peng, Gao; Wang, Jin

doi:10.1016/j.jhydrol.2021.127424

Cited by 17 publications

(1 citation statement)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Our results show that for Dams, the essential variables were those dealing with Dams' average size and discharge. Reservoirs play a vital role in the sediment movement in rivers [46,61,62], and larger reservoirs may have a more substantial effect on the transport processes than smaller ones. Many studies have found a connection between vegetation indices such as NDVI and EVI and catchment sediment discharge [63,64].…”

Section: Rock Chemistry Vegetation Indices and Precipitation Affect M...mentioning

confidence: 99%

Ranking of Basin-Scale Factors Affecting Metal Concentrations in River Sediment

Lotz

Opp

2022

Applied Sciences

View full text Add to dashboard Cite

River sediments often contain potentially harmful pollutants such as metals. Much research has been conducted to identify factors involved in sediment concentrations of metals. While most metal pollution studies focus on smaller scales, it has been shown that basin-scale parameters are powerful predictors of river water quality. The present study focused on basin-scale factors of metal concentrations in river sediments. The study was performed on the contiguous USA using Random Forest (R.F.) to analyze the importance of different factors of the metal pollution potential of river sediments and evaluate the possibility of assessing this potential from basin characteristics. Results indicated that the most important factors belonged to the groups Geology, Dams, and Land cover. Rock characteristics (contents of K2O, CaO, and SiO2) and reservoir drainage area were strong factors. Vegetation indices were more important than land cover types. The response of different metals to basin-scale factors varied greatly. The R.F. models performed well with prediction errors of 16.5% to 28.1%, showing that basin-scale parameters hold sufficient information for predicting potential metal concentrations. The results contribute to research and policymaking dependent on understanding large-scale factors of metal pollution.

show abstract

Section: Rock Chemistry Vegetation Indices and Precipitation Affect M...mentioning

confidence: 99%

Ranking of Basin-Scale Factors Affecting Metal Concentrations in River Sediment

Lotz

Opp

2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

Migration and Transformation of Pollutants in the Reservoir

Hamid¹,

Pei²

2023

Reservoir Ecotoxicology

View full text Add to dashboard Cite

Advances in Ecological and Environmental Effects of Mountain River Sediment

Yuan

Lü

Liu

et al. 2023

Lecture Notes in Civil Engineering

View full text Add to dashboard Cite

Sediment is one of the main factors affecting the ecological environment of rivers, and its eco-environmental effect plays an important role in maintaining the balance of water environment and aquatic biodiversity. Sediment in mountain rivers has obvious characteristics such as wide gradation, which has unique impacts on the ecological environment. In addition, the increasingly intense human activities in mountain rivers, such as the construction and operation of large-scale cascade reservoirs, lead to further complicated changes in the ecological and environmental effects of sediment. In this paper, the environmental effects of mountain river sediment in adsorption, desorption and transport and the ecological effects on aquatic microorganisms, animals, plants and the entire food web were systematically reviewed. The problems existing in relevant researches were discussed, and the research prospects were presented, in order to provide guidance for the protection of mountain rivers.

show abstract

Migration characteristics of arsenic in sediments under the influence of cascade reservoirs in Lancang River basin

Cited by 17 publications

References 61 publications

Ranking of Basin-Scale Factors Affecting Metal Concentrations in River Sediment

Ranking of Basin-Scale Factors Affecting Metal Concentrations in River Sediment

Migration and Transformation of Pollutants in the Reservoir

Advances in Ecological and Environmental Effects of Mountain River Sediment

Contact Info

Product

Resources

About