Distribution characteristics and potential release risk of nitrogen in sediments in Lake Daihai, China

Zhao, Li; Chen, Junyi; Xia, Junqiang; Xing, Jianyu; Wang, Shuhang

doi:10.1007/s11356-023-26801-z

Cited by 3 publications

(4 citation statements)

References 45 publications

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“…Comparisons of the TN and TP concentrations of lakes in Inner Mongolia with those of other lakes in China (Fig. 7) (Zhao et al, 2020) showed that the TN concentrations of lakes in Inner Mongolia exceeded those of other lakes in China, with the TN concentration of Daihai Lake being particularly high. The TP concentrations of lakes in Inner Mongolia were higher than those of lakes in the Qinghai-Tibet Plateau.…”

Section: Overall Water Quality and Eutrophication Status Of Lakes In ...mentioning

confidence: 98%

“…The catchment areas of Daihai Lake, Hongjiannao Lake, and Ulansuhai Lake host large human populations and extensive arable land. Therefore, these lakes receive large nutrient loads from human populations, such as domestic wastewater, which directly or indirectly affect lake water quality (Liu and Wang, 2014;Zhang et al, 2019;Zhao et al, 2020). In addition, the excessive fertilization of farmland leads to an accumulation of nitrogen in soil, which can enter lakes through surface runoff and soil erosion caused by precipitation and irrigation drainage (Liu and Wang, 2014;Zhang et al, 2019;Zhao et al, 2020).…”

Section: Factors Driving the Spatial Variations In Lake Water Qualitymentioning

confidence: 99%

“…Therefore, these lakes receive large nutrient loads from human populations, such as domestic wastewater, which directly or indirectly affect lake water quality (Liu and Wang, 2014;Zhang et al, 2019;Zhao et al, 2020). In addition, the excessive fertilization of farmland leads to an accumulation of nitrogen in soil, which can enter lakes through surface runoff and soil erosion caused by precipitation and irrigation drainage (Liu and Wang, 2014;Zhang et al, 2019;Zhao et al, 2020). Therefore, the TN and NH 4 + -N concentrations of Daihai Lake were significantly higher than those of other lakes.…”

Section: Factors Driving the Spatial Variations In Lake Water Qualitymentioning

confidence: 99%

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Spatial changes and driving factors of lake water quality in Inner Mongolia, China

Ren

Liu

et al. 2022

J. Arid Land

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Lakes play important roles in sustaining the ecosystem and economic development in Inner Mongolia Autonomous Region of China, but the spatial patterns and driving mechanisms of water quality in lakes so far remain unclear. This study aimed to identify the spatial changes in water quality and the driving factors of seven lakes (Juyanhai Lake, Ulansuhai Lake, Hongjiannao Lake, Daihai Lake, Chagannaoer Lake, Hulun Lake, and Wulannuoer Lake) across the longitudinal axis (from the west to the east) of Inner Mongolia. Large-scale research was conducted using the comprehensive trophic level index (TLI (Σ)), multivariate statistics, and spatial analysis methods. The results showed that most lakes in Inner Mongolia were weakly alkaline. Total dissolved solids and salinity of lake water showed obvious zonation characteristics. Nitrogen and phosphorus were identified as the main pollutants in lakes, with high average concentrations of total nitrogen and total phosphorus being of 4.05 and 0.21 mg/L, respectively. The values of TLI (Σ) ranged from 49.14 to 71.77, indicating varying degrees of lake eutrophication, and phosphorus was the main driver of lake eutrophication. The lakes of Inner Mongolia could be categorized into lakes to the west of Daihai Lake and lakes to the east of Daihai Lake in terms of salinity and TLI (Σ). The salinity levels of lakes to the west of Daihai Lake exceeded those of lakes to the east of Daihai Lake, whereas the opposite trend was observed for lake trophic level. The intensity and mode of anthropogenic activities were the driving factors of the spatial patterns of lake water quality. It is recommended to control the impact of anthropogenic activities on the water quality of lakes in Inner Mongolia to improve lake ecological environment. These findings provide a more thorough understanding of the driving mechanism of the spatial patterns of water quality in lakes of Inner Mongolia, which can be used to develop strategies for lake ecosystem protection and water resources management in this region.

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Section: Overall Water Quality and Eutrophication Status Of Lakes In ...mentioning

confidence: 98%

Section: Factors Driving the Spatial Variations In Lake Water Qualitymentioning

confidence: 99%

Section: Factors Driving the Spatial Variations In Lake Water Qualitymentioning

confidence: 99%

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Spatial changes and driving factors of lake water quality in Inner Mongolia, China

Ren

Liu

et al. 2022

J. Arid Land

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“…The soil layer under the forestland canopy exhibited functions of water conservation, soil erosion, interception, and water quality degradation (Sliva and Williams, 2001;Richardson et al, 2011). TN and TP were negatively correlated with the water area, indicating that the lake had a dilution and purification effect on the pollutants in the water (Zhao et al, 2020).…”

Section: The Effect Of Lucc Along Lake Basins On the Water Quality Of...mentioning

confidence: 99%

How the land use/cover changes and environmental factors at different scales affect lake water quality in arid and semi-arid regions

Liu

Jin³

et al. 2023

Front. Ecol. Evol.

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The quantitative relationship between land use/cover change (LUCC) within basins, lake water environmental factors, and water quality has long been a popular research area. In this study, we investigated three typical basins (Ulansuhai Basin, Daihai Basin, and Dalinor Basin) in arid and semi-arid areas of China. The assessment was based on the China Land Cover Dataset (CLCD), which was used to calculate the land use dynamic degree index and Markov transfer matrix. Moreover, an econometric analysis model and a hybrid evolutionary algorithm (HEA) model were used to explore the quantitative relationship between LUCC and environmental factors on the lake water quality. The results showed that the LUCC of the three lake basins was dominated by cultivated land and grassland over the past 20 years. In all of the basins, grassland and water area were converted into cultivated land, water area decreased to varying degrees, and impervious surface area increased continuously. Moreover, the concentration of TN and TP were generally proportional to chemical oxygen demand concentration (COD), biochemical oxygen demand concentration (BOD5), and dissolved oxygen concentration (DO), but inversely proportional to water depth and transparency; the relationship between Nutrient concentration and pH was usually related to the ecological threshold. On the basin scale, the grassland and forestland played positive roles in improving water quality, while cultivated land and impervious surface were the main factors contributing to water pollution. Overall, this study provides a scientific theoretical basis for the rational utilization of land resources, improvement of lake water quality, and ecological protection of typical lake basins in arid and semi-arid regions.

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Sediment nitrogen form occurrence associated with its ecological risk in the Yangtze River Delta plain-river network

He,

Zhao,

Zhang

et al. 2024

International Journal of Sediment Research

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Distribution characteristics and potential release risk of nitrogen in sediments in Lake Daihai, China

Cited by 3 publications

References 45 publications

Spatial changes and driving factors of lake water quality in Inner Mongolia, China

Spatial changes and driving factors of lake water quality in Inner Mongolia, China

How the land use/cover changes and environmental factors at different scales affect lake water quality in arid and semi-arid regions

Sediment nitrogen form occurrence associated with its ecological risk in the Yangtze River Delta plain-river network

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