Trophic status of a shallow lake in Inner Mongolia: long-term, seasonal, and spatial variation

Yu, Haifeng; Shi, Xiaohong; Wang, Shihuan; Zhao, Shengnan; Sun, Biao; Liu, Yu; Yang, Zhaoxia

doi:10.1016/j.ecolind.2023.111167

Cited by 10 publications

(2 citation statements)

References 31 publications

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“…According to domestic scholars' studies related to water quality and other aspects of Wuliangsu Lake, the eutrophication degree of Wuliangsu Lake has obvious seasonal characteristics [25,26], so the month was also utilized as a feature. The monthly information of the data (June, July, August, September) is used as the feature, which is represented by using the binary numbers 0 and 1.…”

Section: Monthly Featurementioning

confidence: 99%

Inversion of Chlorophyll-a Concentration in Wuliangsu Lake Based on OGolden-DBO-XGBoost

Zhou,

Fu,

2024

Applied Sciences

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Chlorophyll-a (Chl-a) concentration is one of the important indicators in water bodies for assessing the ecological health of water quality. In this paper, an OGolden-DBO-XGBoost Chl-a concentration inversion model is proposed using Wuliangsu Lake as the study area, and by combining the Sentinel-2 remote-sensing satellite images and measured Chl-a concentration data in Wuliangsu Lake, the XGBoost model is optimized using the hybrid-strategy-improved dung beetle optimization algorithm (OGolden-DBO), and an OGolden-DBO-XGBoost Chl-a concentration inversion model. The OGolden-DBO-XGBoost model’s coefficients of determination (R2s) were 0.8936 and 0.8850 on the training set and test set, according to the results. The root mean squared errors (RMSEs) were 3.1353 and 2.9659 μg/L, and the mean absolute errors (MAEs) were 1.8918 and 2.4282 μg/L. The model performed well and provided a strong support for the detection of Chl-a concentration in Wuliangsu Lake.

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Section: Monthly Featurementioning

confidence: 99%

Inversion of Chlorophyll-a Concentration in Wuliangsu Lake Based on OGolden-DBO-XGBoost

Zhou,

Fu,

2024

Applied Sciences

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“…In addition, studies had shown that the comprehensive eutrophication index of water during the freezing and thawing periods was higher than that during non-freezing period [40]. These variations will lead to the spring algal blooms [49].…”

Section: Effects Of Freeze-thaw Processes On Nutrient Migration and T...mentioning

confidence: 99%

A Review on the Driving Mechanism of the Spring Algal Bloom in Lakes Using Freezing and Thawing Processes

Zhao,

Liu,

et al. 2024

Water

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Spring algal blooms in mid–high-latitude lakes are facing serious challenges such as earlier outbreaks, longer duration, and increasing frequency under the dual pressure of climate warming and human activities, which threaten the health of freshwater ecosystems and water security. At present, the freeze-thaw processes is the key to distinguishing spring algal blooms in mid- to high-latitude lakes from low-latitude lakes. Based on the visualization and an analysis of the literature in the WOS database during 2007–2023, we clarified the driving mechanism of the freeze-thaw process (freeze-thaw, freeze-up, and thawing) on spring algal bloom in lakes by describing the evolution of the freeze-thaw processes on the nutrient migration and transformation, water temperature, lake transparency and dissolved oxygen, and physiological characteristics of algae between shallow lakes and deep lakes. We found that the complex phosphorus transformation process during the frozen period can better explain the spring-algal-bloom phenomenon compared to nitrogen. The dominant species of lake algae also undergo transformation during the freeze-thaw process. On this basis, the response mechanism of spring algal blooms in lakes to future climate change has been sorted out. The general framework of “principles analysis, model construction, simulation and prediction, assessment and management” and the prevention strategy for dealing with spring algal bloom in lakes have been proposed, for which we would like to provide scientific support and reference for the comprehensive prevention and control of spring algal bloom in lakes under the freezing and thawing processes.

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Nitrogen and phosphorus budgets of the bullfrog (Aquarana catesbeiana) in different body weights

Li,

Jin,

et al. 2025

Aquaculture

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Trophic status of a shallow lake in Inner Mongolia: long-term, seasonal, and spatial variation

Cited by 10 publications

References 31 publications

Inversion of Chlorophyll-a Concentration in Wuliangsu Lake Based on OGolden-DBO-XGBoost

Inversion of Chlorophyll-a Concentration in Wuliangsu Lake Based on OGolden-DBO-XGBoost

A Review on the Driving Mechanism of the Spring Algal Bloom in Lakes Using Freezing and Thawing Processes

Nitrogen and phosphorus budgets of the bullfrog (Aquarana catesbeiana) in different body weights

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