scholarly journals Update of river health assessment indicator system, weight, and assignment criteria in China

2021 ◽  
Author(s):  
Yin Liu ◽  
Huidong Su ◽  
Shuanghu Zhang ◽  
Tiantian Jin
Keyword(s):  
Water Quality ◽  
Case Studies ◽  
Health Assessment ◽  
Aquatic Organism ◽  
Indicator System ◽  
Assessment Criteria ◽  
River Health ◽  
Assessment Indicator ◽  
Comprehensive Listing ◽  
Complex Cases

Abstract Comprehensive assessment of river health is challenging due to the diversity of rivers, the complexity of their ecosystem and functional service. This paper updates the river health assessment indicator system, weight, and assignment criteria in China by reviewing and examining the peer-reviewed literature. We propose an indicator system, weight and criteria, validated by 9 case studies and able to assess the country-scale river health. Our analysis shows that the rule layer of indicator system includes hydrology, water quality, aquatic organism, physical habitats, and functional service; its corresponding weights are set to 0.15, 0.21, 0.18, 0.22, and 0.24 respectively. The ten selected indicators are most representative for incorporating the indicator layer with their corresponding weights. The evaluation based on case studies shows that in 8 out of 9 cases, our results are consistent with those obtained by previous studies. Therefore, the suggested index system, weight and three-assessment criteria are well suited for the complex cases in China. This paper can serve as a reference for a river health assessment and present a comprehensive listing of assessment criteria.

River Landscape Health Diagnosis - Frame and Method

2013 ◽  
Vol 779-780 ◽  
pp. 1328-1331
Author(s):  
Che Yu Hsu ◽  
Sheng Jung Ou
Keyword(s):  
Health Assessment ◽  
Analytic Network Process ◽  
Indicator System ◽  
River Landscape ◽  
Assessment Indicator ◽  
Fuzzy Delphi ◽  
Depth Interview ◽  
Network Process ◽  
Physical And Chemical ◽  
Health Diagnosis

The paper applied the concepts of Landscape health from the literature review with integration in depth-interview, using the Fuzzy Delphi, Fuzzy Analytic Network Process to develop the River Landscape Health Assessment Indicator System (RLHAIS). The assessment indicators system includes the indicator in 3 aspects, that is, physical and chemical environment indicators, landscape change indicators, ecological environment indicators, and 14 indexes, which were then applied to the RLHAIS to analyze the current landscape health for the Dong-shan River upstream in Yilan. The result showed that the score of Dong-shan River upstream: in 2009 was 0.70881, in 2010 was 0.66235, and in 2011 was 0.68694, implying that the healthy level nearly fell onto the "Degraded" state.

The Evaluation of Water Quality and Investigation of Benthic Macroinvertebrates in Stone-Horse River of Dongjiang (China)

2014 ◽  
Vol 1073-1076 ◽  
pp. 405-407
Author(s):  
Hong Wei Wang ◽  
Lin Feng Li ◽  
Jie Zhang ◽  
Rui Yin ◽  
Duan Bo Cai ◽  
...  
Keyword(s):  
Water Quality ◽  
Benthic Macroinvertebrates ◽  
Evaluation System ◽  
Health Assessment ◽  
River Pollution ◽  
River Health ◽  
Pollution Detection ◽  
Detection Evaluation

The benthic macroinvertebrates community biodiversity of Stone-horse River of Dongjiang (China) was investigated in 2013, and evaluation system of river health assessment was established based on the benthic macroinvertebrates diversity. It provides relevant data which distribution of benthic macroinvertebrates for the basin of river pollution detection, evaluation and treatment.

scholarly journals Population Characteristics of Brachionus calyciflorus and Their Potential Application for Evaluating River Health in the Pearl River Delta, China

Water ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 749
Author(s):  
Yuan Gao ◽  
Zini Lai ◽  
Chao Wang ◽  
Haiyan Li ◽  
Yongzhan Mai
Keyword(s):  
Water Quality ◽  
Environmental Factors ◽  
Pearl River Delta ◽  
Significant Positive Correlation ◽  
River Delta ◽  
Population Characteristics ◽  
Pearl River ◽  
River Health ◽  
The Pearl River Delta ◽  
The Pearl River

Water pollution can be monitored through the use of indicator species, including Brachionus calyciflorus. To do this, it is necessary to understand the species’ population ecology. Four surveys of zooplankton were conducted in May, August, and December 2018 and February 2019 in the Pearl River Delta, China, to examine the population characteristics of B. calyciflorus. The temporal and spatial distribution of abundance, biomass, dominance, and occurrence frequency were compared with those from 2012 to investigate the relationship between changes in the population of B. calyciflorus and environmental factors. The average abundance, dominance, and occurrence of B. calyciflorus in this survey were significantly higher than those of 2012 in all seasons. Principal component analysis showed that environmental factors such as the temperature, transparency, total nitrogen, and total phosphorus of water had a major impact on the abundance of B. calyciflorus. There was a significant positive correlation with transparency, total nitrogen, and total phosphorus of water, and a very significant positive correlation with water temperature. Overall, these results demonstrated that the distribution characteristics of B. calyciflorus can reflect pollution in water bodies and can be used to evaluate water quality. These research results provide a reference for evaluating China’s river health and can help to manage water quality in the Pearl River Delta.

scholarly journals Geochemical and biological controls on the ecological relevance of total, dissolved, and colloidal forms of trace elements in large boreal rivers: review and case studies

2020 ◽  
Vol 28 (2) ◽  
pp. 138-163
Author(s):  
C.W. Cuss ◽  
C.N. Glover ◽  
M.B. Javed ◽  
A. Nagel ◽  
W. Shotyk
Keyword(s):  
Water Quality ◽  
Trace Elements ◽  
Case Studies ◽  
Quality Criteria ◽  
Water Levels ◽  
Water Quality Criteria ◽  
Aquatic Life ◽  
Athabasca River ◽  
Biological Variables ◽  
Boreal Rivers

The concentrations of trace elements (TEs) in large boreal rivers can fluctuate markedly due to changing water levels and flow rates associated with spring melt and variable contributions from tributaries and groundwaters, themselves having different compositions. These fluctuating and frequently high concentrations create regulatory challenges for protecting aquatic life. For example, water quality criteria do not account for changes in flow regimes that can result in TE levels that may exceed regulatory limits, and neither do they account for the markedly different lability and bioaccessibility of suspended solids. This review addresses the geochemical and biological processes that govern the lability and bioaccessibility of TEs in boreal rivers, with an emphasis on the challenges posed by the colloidal behaviour of many TEs, and their relationship to the dissolved fraction (i.e., <0.45 μm in size). After reviewing the processes and dynamics that give rise to the forms and behaviour of TEs in large boreal rivers, their relevance for aquatic organisms and the associated relationships between size and lability and bioaccessibility are discussed. The importance of biological variables and different forms of TEs for limiting lability and bioaccessibility are also addressed. Two case studies emphasize seasonal fluctuations and accompanying changes in the distribution of TE amongst different size fractions and associated colloidal species in large boreal rivers: the Northern Dvina and one of its tributaries, the Pinega River, both in Russia, and the Athabasca River in Alberta, Canada. Water quality in the Athabasca River is briefly discussed with respect to Canadian guidelines.

River health assessment: Proposing a comprehensive model based on physical habitat, chemical condition and biotic structure

2019 ◽  
Vol 103 ◽  
pp. 446-460 ◽  
Author(s):  
Shuo Wang ◽  
Qian Zhang ◽  
Tao Yang ◽  
Liqi Zhang ◽  
Xiaoping Li ◽  
...  
Keyword(s):  
Health Assessment ◽  
Physical Habitat ◽  
Comprehensive Model ◽  
Chemical Condition ◽  
River Health ◽  
Model Based

Uncertainty associated with river health assessment in a varying environment: The case of a predictive fish-based index in France

2014 ◽  
Vol 43 ◽  
pp. 195-204 ◽  
Author(s):  
Anahita Marzin ◽  
Olivier Delaigue ◽  
Maxime Logez ◽  
Jérôme Belliard ◽  
Didier Pont
Keyword(s):  
Health Assessment ◽  
River Health ◽  
Varying Environment
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