Using soil erosion to locate nonpoint source pollution risks in coastal zones: A case study in the Yellow River Delta, China

Wang, Youxiao; Liu, Gaohuan; Zhao, Zhonghe; Wu, Chunsheng; Yu, Bowei

doi:10.1016/j.envpol.2021.117117

Cited by 27 publications

(12 citation statements)

References 49 publications

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“…Accumulation process of nitrogen in water is actually a process in which nitrogen load is transported into water under the external driving effect. Nitrogen load transport process shows that natural environment factors such as rainfall characteristics, topographic characteristics, soil physical and chemical properties, river network structure and so on affect the material flow and energy flow state of NPS process (Wang et al, 2021). The influence of these factors is shown by the spatial variation of natural driving forces, which is the reason for the different influence patterns.…”

Section: Spatio-temporal Variation Of Natural Influence On the Enviro...mentioning

confidence: 99%

“…SCS-CN model is also an empirical model based on statistics from experimental observation data, representing the natural law of rainfall runoff to simulate surface runoff that promotes the pollutant transportation (Caletka et al, 2020;Jung et al, 2012). The Universal Soil Loss Equation (USLE) is a famous empirical model to predict the annual average soil loss caused by surface erosion and gully erosion according to the experimental data of nearly 10,000 runoff plots, it considers rainfall, soil erodibility, crop management, slope length and soil and water conservation measures (Wang et al, 2021;Pijl et al, 2020). The mechanism model, represented by the soil water assessment tool (SWAT) model, can simulate some detailed process, included the hydrological process and the nutrient transfer into rivers, and provide accurate results on a small-or large-scale Athira, R.P., 2021;Baijracharya et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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The impacts of spatio-temporal variation of natural and agricultural influences on the environmental water quality in a fluvial-lacustrine watershed in China

Feng

Zheng

Jia

et al. 2022

Preprint

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Despite the significant impacts of natural factors such as rainfall, topography, soil type, and river network as well as agricultural activities on the environmental water quality, little is known about the influence of their temporal and spatial variations in a fluvial-lacustrine watershed. In this study, a whole process accounting method based the export coefficient model (WP-ECM) was first developed to quantify how natural factors and agricultural activities distribution influenced water quality. A case study was performed in a typical fluvial-lacustrine area –Dongting basin, China. The simulated results indicated that the natural factors can promote the migration and transformation of agricultural pollutants generated from the watershed and the spatial distribution of the natural factors displayed high variability. It should be priority to monitor the areas with greater natural impact in the basin. Moreover, the cultivated land area and the number of pig-breeding were positively correlated with the pollutant discharge, and it is an important measures to reduce and control the anthropological influence in the agricultural high-impact areas. From the perspective of the spatial distribution of comprehensive influence, the comprehensive high-impact areas are mainly distributed in the Dongting Lake district in 2005–2010 and in Xiang River watershed in 2010–2020. A key strategy for controlling or reducing the cultivated land area and the intensity of livestock breeding in these high-impacts areas, especially in Dongting Lake district and Xiang River watershed, is to reduce the impact of the environmental water quality for the entire basin.

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Section: Spatio-temporal Variation Of Natural Influence On the Enviro...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The impacts of spatio-temporal variation of natural and agricultural influences on the environmental water quality in a fluvial-lacustrine watershed in China

Feng

Zheng

Jia

et al. 2022

Preprint

View full text Add to dashboard Cite

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“…non-point source pollution resulted from soil loss carrying pollutants down the slopes, (2). reduction of soil fertility that affects crop yield, and (3). sedimentation in rivers and water bodies.…”

Section: Introductionmentioning

confidence: 99%

“…sedimentation in rivers and water bodies. [1][2][3][4][5] Quantification of soil loss has always been attracting researchers' attention, and the technology of soil loss estimation has changed from parametrized estimation like USLE [6,7] and Revised Universal Soil Loss Equation (RUSLE) [8] to processes-based simulations, for instance CREAMS [9], AgNPS [10], WEPP [11,12], SWAT [13]. Regardless the simplicity or complexity of models, soil loss estimation is still built upon the existing understanding of soil erosion processes.…”

Section: Introductionmentioning

confidence: 99%

Impact of Antecedent Soil Moisture on Interrill Erosion

Chen,

2024

Preprint

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The impact of antecedent soil moisture content on soil erosion is a complicated phenomenon, which is still under argument with contradictions in research results. Hence, the objective of this study is to investigate the impact of antecedent soil moisture content to soil loss on clay soil by conducting two-year field experiments under natural rainfall on runoff plots with length of 10 meters, width of 3 meters, and uniform slope of 9%. Volumetric soil moisture sensors were used to log soil moisture changes, and soil moisture readings were used along with rainfall records to quantify the antecedent soil moisture conditions for each rainfall event. Results of this study show duration of the effective erosion event outranks the antecedent volumetric soil moisture content. Field study also suggests that accumulative rain falling within 48 hours (Pp48) prior to an effective erosion event strongly correlated with soil loss per Rainfall-Runoff Erosivity Index (Soil Loss / EI30), particularly when the duration of an effective erosion event is either between 3 ~ 7 hours or 10~ 30 hours. Hence, Pp48 can be considered as an alternative to replace antecedent soil moisture content in RUSLE 2’s cover and management factor.

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“…In many researches of NPS pollution, pollutant export loads were widely used to analyze the NPS pollution situation [2][3][4]. When focused on single pollutant, export loads provide accurate information of pollution.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of non-point source pollution based on grey water footprint method: A case study in the urban agglomeration of Shenzhen, Dongguan and Huizhou

Yue

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Based on a grey water footprint method, NPS pollution in the urban agglomeration of Shenzhen, Dongguan and Huizhou was evaluated in this research. The results showed that the NPS pollution level in this urban agglomeration decreased from 1995 to 2019. The grey water footprint of NPS pollution in the cities of Shenzhen, Dongguan and Huizhou had similar variation characteristic, which showed a trend of first increasing, then decreasing, and finally increasing during the research period. The largest source of grey water footprint of NPS pollution was land use, followed by livestock and poultry breeding. The water pollution level of NPS pollution was highest in Shenzhen and lowest in Huizhou, which was in the same order as gross domestic product (GDP) in this agglomeration. Thus, city governments should attach more importance to prevention and control of NPS pollution in the process of economic development, especially for land use source.

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Using soil erosion to locate nonpoint source pollution risks in coastal zones: A case study in the Yellow River Delta, China

Cited by 27 publications

References 49 publications

The impacts of spatio-temporal variation of natural and agricultural influences on the environmental water quality in a fluvial-lacustrine watershed in China

The impacts of spatio-temporal variation of natural and agricultural influences on the environmental water quality in a fluvial-lacustrine watershed in China

Impact of Antecedent Soil Moisture on Interrill Erosion

Evaluation of non-point source pollution based on grey water footprint method: A case study in the urban agglomeration of Shenzhen, Dongguan and Huizhou

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