Evidence map›Paper›PMID 41942672›Full record

ArticleScientific reports2026

Enhancing reservoir water quality simulation through machine learning-driven remote sensing integration with EFDC: a coupled framework for eutrophication management in data-scarce regions.

Haobin Meng, Jing Zhang, Xianyong Meng, Yao Chang, Zhen Zheng, Binbin Li

Abstract read
In one paragraph

Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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3 · Its place in the literature

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0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Haobin MengTechnical Centre for Soil, Agriculture and Rural Ecology and Environment, Ministry of Ecology and Environment, Beijing, 100012, China.
Jing ZhangBeijing Key Laboratory of Resource Environment and Geographic Information System, Capital Normal University, Beijing, 100048, China. 5607@cnu.edu.cn.
Xianyong MengSchool of Smart Water Conservancy Engineering, Xinjiang Institute of Technology, Aksu, 843000, China. xymeng@cau.edu.cn.
Yao ChangBeijing Key Laboratory of Resource Environment and Geographic Information System, Capital Normal University, Beijing, 100048, China.
Zhen ZhengFuzhou Research Academy of Environmental Sciences, Fuzhou, 350000, China.
Binbin LiSchool of Smart Water Conservancy Engineering, Xinjiang Institute of Technology, Aksu, 843000, China.

Funding

National Natural Science Foundation of China No. 41271004"Tianchi Plan" Innovation Leading Talents Project of Xinjiang Uygur Autonomous Region No. 2024TCLJ01Xianyong Meng, the Xinjiang Institute of Technology High-Level Talent Research Initiation Fund No. XJLG2024G003
6 · The paper itself

Abstract

Hydrological model accuracy is often constrained by limited in-situ data. This study develops a coupled framework integrating machine-learning-based remote sensing retrievals with the Environmental Fluid Dynamics Code (EFDC) to improve reservoir water quality simulations. Landsat imagery (2013-2023) and multiple algorithms (Random Forest, Gradient Boosting, AdaBoost, etc.) were used to derive spatiotemporal distributions of total nitrogen (TN), total phosphorus (TP), and chlorophyll-a (Chl-a), which were incorporated as dynamic boundary conditions in EFDC. The coupled model reduced simulation errors by 0.13-5.28% and increased mean R² from 0.70 to 0.81. Compared with standalone EFDC, retrieval-based estimates showed lower mean relative errors for TN (20.61%), TP (28.95%), and Chl-a (26.08%). Seasonal analysis revealed Chl-a peaks in June (14.6 µg/L) and TN/TP accumulation in summer. Scenario simulations indicated that external load reduction (5-30%) effectively decreased TN and TP but had limited influence on Chl-a due to threshold effects. The optimal integrated strategy (30% external load reduction + 1.0% outflow reduction, scenario f-1) achieved concurrent reductions of 27.4% (TN), 23.7% (TP), and 13.2% (Chl-a), averaging 21.4% across all indicators. Critically, scenario analysis revealed that reducing external inflow loads alone produced limited suppression of algal biomass due to threshold effects and internal nutrient buffering, whereas combined reductions in inflow loading and moderate adjustments to hydrodynamic outflow regulation were necessary to achieve meaningful Chl-a control. These findings demonstrate that alterations to both nutrient inflow and reservoir hydrodynamics are essential levers for eutrophication management, with implications for operational decision-making in data-scarce reservoir systems worldwide.

Indexed as

Coupled modelingEFDC modelingMachine learningRemote sensingReservoir eutrophicationShanzai reservoir

Identifiers

PMID41942672
PMCPMC13219439

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.