Development of regional pollution export coefficients based on artificial rainfall experiments and its application in North China

Liu, R.; Yu, Wenwen; Shi, Jianhan; Wang, J.; Xu, Fu-Liu; Shen, Zhenyao

doi:10.1007/s13762-016-1187-9

Cited by 10 publications

(3 citation statements)

References 41 publications

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“…Since the loss of nitrogen and phosphorus mainly occurred in the rainy season (Liu et al 2016), the observation period of this experiment was From July to September 2010. The measurement data included runoff, runoff duration and concentrations of TN and TP in runoff.…”

Section: Export Coefficients Determinationmentioning

confidence: 99%

Non-point source pollution loads estimation in Three Gorges Reservoir Area based on improved observation experiment and export coefficient model

Tong

Zhou

Liu

et al. 2021

Water Science and Technology

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The non-point source (NPS) pollution has become an important limitation to the sustainable development of the Three Gorges Reservoir Area (TGRA) water resources. NPS load estimation research has theoretical and realistic significance for water environment security and water pollution control. Therefore, The TGRA was chosen to be as the study area, and the export coefficients of different land-use type were calculated through literature consultation method combined with improved observation experiment. The load of total nitrogen (TN) and total phosphorus (TP) of NPS from different pollution sources including farmland, decentralized livestock and poultry breeding and domestic pollution sources were estimated. The results are shown as follows: the order of TN load of different sources in TGRA from high to low was land use, livestock and poultry breeding, rural life,the TN from land use was 372% higher than that of rural; the order of TP load of different sources in TGRA from high to low was livestock and poultry breeding, rural life, land use, the TP from livestock and poultry breeding was 114.5% higher than that of land use. Therefore, the control of the livestock and poultry sewage discharge was the key practice to limit the TP loss, while the optimization of agricultural management was the key practice to control the loss of TN.

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Section: Export Coefficients Determinationmentioning

confidence: 99%

Non-point source pollution loads estimation in Three Gorges Reservoir Area based on improved observation experiment and export coefficient model

Tong

Zhou

Liu

et al. 2021

Water Science and Technology

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“…Although the output coefficients of different models reflect the uniqueness of the study area, the ECM uses the same output coefficient in different areas, while terrain heterogeneity is not considered when the model is used on a large scale, which limits the ECM [28,29]. Many scholars have improved the ECM, for example by including a precipitation coefficient and terrain factors in the study.…”

Section: Introductionmentioning

confidence: 99%

Water Resource Risk Assessment Based on Non-Point Source Pollution

Yuan

Zhang

2021

Water

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As one of the most important causes of water quality deterioration, NPS (non-point source) pollution has become an urgent environmental and livelihood issue. To date, there have been only a few studies focusing on NPS pollution conforming to the estimation, and the pollution sources are mainly concentrated in nitrogen and phosphorus nutrients. Unlike studies that only consider the intensity of nitrogen and phosphorus loads, the NPS pollution risk for the China’s Fuxian Lake Basin was evaluated in this study by using IECM (Improve Export Coefficient Model) and RUSLE (Revised Universal Soil Loss Equation) models to estimate nitrogen and phosphorus loads and soil loss and by using a multi-factor NPS pollution risk assessment index established on the basis of the data mentioned above. First, the results showed that the load intensity of nitrogen and phosphorus pollution in the Fuxian Lake Basin is low, so agricultural production and life are important sources of pollution. Second, the soil loss degree of erosion in the Fuxian Lake is mild, so topography is one of the most important factors affecting soil erosion. Third, the risk of NPS pollution in the Fuxian Lake Basin is at a medium level and its spatial distribution characteristics are similar to the intensity characteristics of nitrogen and phosphorus loss. Nitrogen, phosphorus, sediment, and mean concentrations are important factors affecting NPS pollution. These factors involve both natural and man-made environments. Therefore, it is necessary to comprehensively consider the factors affecting NPS in order to assess the NPS risk more accurately, as well as to better solve the problem of ecological pollution of water resources and to allow environmental restoration.

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“…Compared with the characteristics of point source pollution, nonpoint source pollution is widespread and difficult to quantify (Liu et al 2017). With the intensification of urbanization, nonpoint source pollution has gradually become the major source of water pollution (Qiu et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“Source–sink” landscape pattern analysis of nonpoint source pollution using remote sensing techniques

Zhang

Cui

et al. 2018

Int. J. Environ. Sci. Technol.

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Research on the "source-sink" landscape pattern of nonpoint source pollution is of great significance to natural resource management, environmental protection, water quality improvement, nonpoint source pollution prevention and control, and ecological security pattern construction. Remote sensing has proven by many scholars as a practical and effective technique to study landscape patterns and nonpoint source pollution. However, there are still many obstacles to the application of remote sensing technology, such as classification errors, scale effects and the issue, whereby landscape metrics cannot describe the landscape information comprehensively. In view of the characteristics of the macroscale and multi-scale of remote sensing, the analysis of landscape patterns is the basis for the study of the relationship research between patterns and ecological processes, and it is also the key to the study of landscape dynamics and functions. This paper attempts to summarize the representative results and the challenges of remote sensing in the study of the source and sink landscape of the nonpoint source pollution landscape and provide corresponding solutions as a reference for future research.

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Development of regional pollution export coefficients based on artificial rainfall experiments and its application in North China

Cited by 10 publications

References 41 publications

Non-point source pollution loads estimation in Three Gorges Reservoir Area based on improved observation experiment and export coefficient model

Non-point source pollution loads estimation in Three Gorges Reservoir Area based on improved observation experiment and export coefficient model

Water Resource Risk Assessment Based on Non-Point Source Pollution

“Source–sink” landscape pattern analysis of nonpoint source pollution using remote sensing techniques

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