Mapping Turbidity Spatial Distribution of Monobe River in Kochi, Japan, Using Satellite Images and Existing Turbidity Data DOI Creative Commons
Naoyuki Hashimoto, Yuichiro Matsuoka,

Saori Niimi

et al.

River Research and Applications, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 25, 2024

ABSTRACT Maintaining the environment and functionality of rivers is crucial for natural socioeconomic activities. In Kochi Prefecture, field measurements turbidity have been conducted to contribute countermeasures against prolonged turbid water in Monobe River; however, a detailed understanding across river has not yet achieved. Therefore, we attempted propose simple estimation equation based on satellite remote sensing using existing data visualized spatial distribution River. For over 50 FTU, mean absolute error percentage (MAPE) proposed were 9.9 FTU 8%, respectively, showing higher accuracy than previous studies, while under was improved practical use (MAPE 49%). By applying images, from estuary River upstream Nagase Dam. The results consistent with known findings dynamics, such as decreasing straight section increasing it curved section, considered be reasonably estimated. visualization also revealed cases which fluctuated greatly sections where (e.g., increases or decreases due morphology). future, expected that will used combination conventional measurement understand analyze situation occurrence

Language: Английский

A Multi-Model approach for remote Sensing-Based actual evapotranspiration mapping using Google Earth Engine (ETMapper-GEE) DOI Creative Commons
Abdelrazek Elnashar, Shahab Aldin Shojaeezadeh, Tobias K. D. Weber

et al.

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 133062 - 133062

Published: March 1, 2025

Language: Английский

Citations

1
An innovative approach for quality assessment and its contamination on surface water for drinking purpose in Mahanadi River Basin, Odisha of India, with the integration of BA-WQI, AHP-TOPSIS, FL-DWQI, MOORA, and RF methodology DOI Creative Commons
Abhijeet Das

Applied Water Science, Journal Year: 2024, Volume and Issue: 14(12)

Published: Nov. 25, 2024

Water is essential for life, as it supports bodily functions, nourishes crops, and maintains ecosystems. Drinking water crucial maintaining good health can also contribute to economic development by reducing health-care costs improving productivity. The present study evaluated the surface quality of Mahanadi River (Odisha, India). Hence, evaluate hydro-chemical processes, sources contamination, quality, a methodical examination was conducted using an integrated approach, namely Bayesian Approximation (BA), Analytical Hierarchy Process (AHP)-Technique Order Preference Similarity Ideal Solution (TOPSIS), Fuzzy Logic (FL), Multi-Objective Optimization on Basis Ratio Analysis (MOORA), Random Forest (RF) method. For this, samples from 16 locations were taken period 2018–2024, test 21 physicochemical parameters in selected sampling sites. From assessment parameters, with respect WHO standards, pH indicates alkaline, TKN, TC all surpassed prescribed drinking limit. However, major ion hardness spatial interpolation maps typically show that declines upstream downstream, extreme values found downstream. index BA-WQI value revealed 50% belong unsatisfactory quality. This accompanied several parameter's high values, TDS, NO3−, Cl−, SO42−, which highest among locations. Again, noticed 12.50% sites come under zone excellent water. 37.50% indicated class. As result, renowned MCDM model, such AHP-TOPSIS, presented, makes use rough set theory weights provide trustworthy objective total pollution levels at each sample site. this innovative technique depicted W-(9) most polluted region if compared other places, followed W-(8), (16), (2), (7), respectively. Based FL-DWQI 12.5% monitored specimens point towards category, rest 18.75% remaining samples, or 68.75%, consist 'poor, very poor, unsuitable qualities'. relevant degree these stations more closely linked variety expanding human activities, excessive use, fertilizer effects, agricultural runoff, industrial activity around river corridor. Additionally, MOORA has been performance scores extracted. These four W-(9), (8), (4), contain higher scores, 0.89, 0.093, 0.06, 0.04. places containing variables exceeded limits, account coliform, EC properties, named accordingly. It discovered main causes river's adulteration runoff home waste Furthermore, RF analysis carried out five critical TH, EC, obtained basis R2 RMSE score. Here, first factors sufficient explain 83.86%, 84.27%, 84.14%, 85% model accuracy correlation matrix. In end, target suggests about 89% accuracy. Afterwards, expressed terms RF-WQI. varied between 15 243, denoting poor finding investigation eight inadequate sites, illegally deposited municipal solid waste, deteriorating household supplies. work highlights viability dependability integrating techniques monitoring evaluating findings are comprehending sustainability, consumption research area.

Language: Английский

Citations

5
Economic life evaluation of reservoir dams based on comprehensive costs and benefits analysis considering potential dam breach: A case study of the Luhun reservoir in China DOI
Wei Ge,

Heqiang Sun,

Laihong Jing

et al.

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 639, P. 131613 - 131613

Published: July 6, 2024

Language: Английский

Citations

4
Investigating the impact of diversion projects on river health using the spherical fuzzy cloud TOPSIS model and the SHapley Additive exPlanation technique DOI Creative Commons
Ting Cheng,

Minhua Ju,

Wenhui Zhang

et al.

Ecological Indicators, Journal Year: 2025, Volume and Issue: 170, P. 113112 - 113112

Published: Jan. 1, 2025

Language: Английский

Citations

0
Developing a Novel Robust Model to Improve the Accuracy of River Ecosystem Health Assessment in the Qinghai–Tibet Plateau DOI Open Access
Yuan Xu, Yun Li, Xiaogang Wang

et al.

Sustainability, Journal Year: 2025, Volume and Issue: 17(5), P. 2041 - 2041

Published: Feb. 27, 2025

River ecosystem health assessment (REHA) is crucial for sustainable river management and water security. However, existing REHA methodologies still fail to consider the multiple effects of input uncertainty, environmental stochasticity, decision-maker’s bounded rationality. Moreover, studies primarily focused on plain areas, leaving Qinghai–Tibet Plateau (QTP) understudied despite its ecosystems’ heightened fragility complexity. To address these gaps, this study combined Pythagorean fuzzy sets with cloud modeling proposed (PFC) approach. Accordingly, a novel robust model (PFC-TODIM) was created by expanding conventional TODIM method PFC algorithm. We provided an indicator system tailored distinctive characteristics in QTP, leveraging multisource data. health, driving mechanisms, potential threats were investigated Lhasa (LR) using PFC-TODIM model. Results showed that effectively took uncertainties into consideration, thereby improving accuracy robustness. In LR, conditions demonstrated substantial spatial disparities. Sampling sites 28%, 48%, 24% subhealthy, healthy, excellent, respectively. Findings anthropogenic factors, such as dams, urban development, fish release adversely affect should be properly managed.

Language: Английский

Citations

0
Z-Pythagorean adjusted fuzzy cloud-asymmetric regret decision-making model for environmental pollution assessment DOI
Sidong Xian, Nuo Xu,

Xichun Lan

et al.

Expert Systems with Applications, Journal Year: 2025, Volume and Issue: unknown, P. 127309 - 127309

Published: March 1, 2025

Language: Английский

Citations

0
Research on the analysis of the coupling coordination degree of Shaanxi's atmospheric ecological governance and urban clean governance based on environmental sustainability DOI Creative Commons
Weidi Zhang, Lei Wen

Ecological Indicators, Journal Year: 2023, Volume and Issue: 155, P. 111068 - 111068

Published: Oct. 14, 2023

With the rapid growth of urbanisation, environmental issues such as atmospheric pollution and ecological degradation are becoming increasingly prominent; therefore, it is crucial to investigate coupled coordinated development path ecology governance urban cleanliness governance. This study builds an evaluation index system applies entropy value method coordination degree model conduct in-depth analysis comprehensive level relationship between in Shaanxi 2011 2021. The study's findings indicate that, during 2011–2021, exhibited a gradual upward trend, indicating that certain achievements have been made recent years, but there still room for further improvement. In particular from 2015, lagged behind, initial phase led muddled index. Second, 2016 2019, sanitation entered mild at middle stage governance, tended increase consistently. Particularly noteworthy fact 2021, tends be close 1, which can attributed implementation large-scale policies had significant effects on comprehensively described using analysis. spite first results observed necessary maximise benefits consolidate optimise structure, aim meet environment carbon emission target region.

Language: Английский

Citations

9
River ecosystem health assessment in the Qinghai-Tibet Plateau: A novel hybrid method based on artificial intelligence and multi-source data fusion DOI
Zhengxian Zhang, Xiaogang Wang, Li Yun

et al.

Expert Systems with Applications, Journal Year: 2024, Volume and Issue: 251, P. 124078 - 124078

Published: April 21, 2024

Language: Английский

Citations

3
Characterization of groundwater potability and irrigation potential in Uttar Pradesh, India using water quality index and multivariate statistics DOI Creative Commons

Supriya Chaudhary,

Gurudatta Singh, Deepak Gupta

et al.

Journal of Hydroinformatics, Journal Year: 2024, Volume and Issue: 26(5), P. 1100 - 1121

Published: March 19, 2024

ABSTRACT This study includes groundwater quality data from 290 monitoring sites 69 districts of Uttar Pradesh, India. The analysis the showed that 98.97, 24.48, 52.07, and 68.97% samples had concentrations electrical conductivity (EC), total hardness (TH), Mg2+, HCO3−, respectively, higher than maximum permissible limit. Groundwater index (GWQI) was calculated for these which revealed 21 (7.24%) inappropriate GWQI drinking water, 18 (6.21%) an unsuitable irrigation. Most sampling (98.97%) high EC contents in with a mean value 999.33 μS/cm. Fluoride content found within limits 95.52% samples, while 4.48% concentrations. use hierarchical cluster differentiated all into two clusters: one pollution other low pollution. Significant correlations exist between physicochemical irrigation indicators correlation matrix. High loadings EC, TH, Ca2+, Na+, Cl−, SO42− were identified first principal component, are thought to be pollution-controlled processes anthropogenic sources. According Chadha diagram, CaHCO3 Ca–Mg–HCl most prevalent chemicals water.

Language: Английский

Citations

2
Spatiotemporal dynamics and anthropogenic drivers of geological hazard prevention efficiency in China DOI Open Access
Yi Liu,

Xianjin Huang,

Zhengxian Zhang

et al.

Cities, Journal Year: 2023, Volume and Issue: 143, P. 104607 - 104607

Published: Oct. 4, 2023

Language: Английский

Citations

5