Comparison of soil erosion models used to study the Chinese Loess Plateau

Li, Pengfei; Mu, Xingmin; Holden, Joseph; Wu, Yiping; Irvine, Brian; Wang, Fei; Gao, Peng; Zhao, Guangju; Sun, Wenyi

doi:10.1016/j.earscirev.2017.05.005

Cited by 144 publications

(68 citation statements)

References 98 publications

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“…Another approach to erosion mapping is the use of process‐based models, such as the Pan‐European Soil Erosion Risk Assessment (PESERA) model (Irvine & Kosmas, ; Kirkby, Irvine, Jones, & Govers, ). Albeit neither the USLE nor PESERA model was included in their study, Li et al () found no clear advantage of process‐based and empirical modes over one another, after the comparison of 11 different soil erosion models.…”

Section: Introductionmentioning

confidence: 88%

Evaluating the new soil erosion map of Hungary—A semiquantitative approach

et al. 2018

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Soil erosion by water is one of the most significant forms of soil degradation globally, especially in Europe. A new soil erosion risk map of Hungary has been compiled and published recently, using the combined outputs of the Universal Soil Loss Equation and Pan‐European Soil Erosion Risk Assessment models. Our study aimed at providing evaluation of the map by using semiquantitative validation data obtained from the Hungarian Soil Degradation Subsystem of the National Environmental Information System. The Soil Degradation Subsystem database contained information at farm level as well as indicators based on laboratory data for 5‐ha representative plots. On the basis of the semiquantitative analysis, the map results align well with the farm‐based degradation data and provide viable information not only at the regional scale but also at the farm scale. However, indicators from representative plots did not support model results, indicating possible conflict between farm‐ and plot‐level data. Cross‐comparison of these indicators showed only limited correlation between farm‐ and plot‐level indicators.

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Section: Introductionmentioning

confidence: 88%

Evaluating the new soil erosion map of Hungary—A semiquantitative approach

et al. 2018

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“…The dominance of anthropogenic activities may be a result of (a) increased demand for water resources in the Yellow River due to national economic development (Liu & Zhang, ), (b) soil and water conservation programs and eco‐environment rehabilitation campaign on the Loess Plateau (Gao et al, ; Mu et al, ), (c) the construction of water control projects (e.g., reservoirs) (Tian, Cui, Xu, & Zhou, ; G. Wang, Wu, & Wang, ). In addition, there have been a large scale of soil and water conservation measures (e.g., check dams, terraces) on the Loess Plateau since the 1970s (P. F. Li, Mu, Holden et al, ; Zhao, Mu, Wen, Wang, & Gao, ). Such measures were more influential on soil erosion than run‐off given that they were mainly designed to reduce the severe soil erosion on the plateau, leading to a more rapid reduction of sediment discharge and eventually an earlier change point in the slope of streamflow DMC.…”

Section: Discussionmentioning

confidence: 99%

“…However, the implementation of SWAT model requires a large amount of data on topography, climate, soil, and land use (Neitsch, Arnold, Kiniry, Williams, & King, ). In many places, some of these data are not available, or the accuracy of the data is limited (P. H. Li, Mu, Holden et al, ). As a result, it is difficult to apply the SWAT model to these places or modelling results may be subject to unacceptable uncertainties.…”

Section: Discussionmentioning

confidence: 99%

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Use of double mass curves in hydrologic benefit evaluations

Gao

Zhao

et al. 2017

Hydrological Processes

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104

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Environmental change resulting from intensified human interventions and climate change has impacted the hydrological function of many large river systems, largely altering the production and transport of run‐off and sediment. It is thus vital to quantitatively evaluate the influence of climate change and human activities on streamflow and sediment discharge. Water balance equations, hydrological models, and comparative analyses are commonly used to fulfil this need. Double mass curves (DMCs), being one useful method for comparative analyses, are characterized by low data requirements and high transferability, and thus more practical than water balance equations and hydrological models for hydrologic benefit evaluations. However, the detailed derivation procedure of the DMC has, to date, yet been described in literature. Moreover, in previous studies, changing points of the DMC were determined either rather empirically or as the changing point of streamflow or sediment discharge (i.e., precipitation was not considered). Hence, the changing point detected may be subject to inaccuracies. This paper, for the first time, comprehensively detailed the derivation procedure of the DMC; a new way was proposed to quantitatively examine the changing point of the DMC; an example was also given to demonstrate the use of the DMC in the hydrologic benefit evaluation. It is hopeful that the method given in our paper will be widely adopted by future studies as a standard procedure to derive and use the DMC.

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“…An example of a conceptual soil erosion model is the Morgan-Morgan-Finney (MMF) model (Morgan et al, 1984) including its revised (RMMF; Morgan, 2001) and modified (MMMF; Morgan and Duzant, 2008) versions. It has been applied in a variety of climate regions, land-use types and scales (De Jong et al, 1999;Vigiak et al, 2005;López-Vicente et al, 2008;Vieira et al, 2014;Li et al, 2017). This model retains the simplicity of empirical models yet has a stronger physical base.…”

Section: Introductionmentioning

confidence: 99%

A model for catchment soil erosion management in humid agricultural environments

Peñuela

Sellami

Smith

2017

Earth Surf Processes Landf

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Intensive agricultural practices have critically contributed to the global increase in soil erosion and sediment fluxes. To reduce the impact of these practices, models able to represent the effect of changes in agricultural land‐use, farming and conservation practices are needed. Moreover, simulations spanning multi‐decadal periods can overcome the potentially confounding influence of climate variability on shorter‐term studies of impacts from agricultural change. Conceptual erosion models, such as the Morgan–Morgan–Finney (MMF) model, allow simulation of soil erosion rates and sediment fluxes over longer periods, while still retaining a general description of runoff and sediment generation processes. In addition, the modified‐MMF (MMMF) model offers improved representation of vegetation cover effects through measurable plant properties. However, as an annual model, the MMF model does not capture seasonal variability in climate, hydrology and land cover. Here, we propose a new model for humid environments based on the MMF model to address its limitations and improve its predictive ability, while retaining its simplicity and low computational and parameterization requirements. This includes monthly computation, representation of catchment hydrology based on delineation of saturated areas according to the topographic wetness index (TWI), and improved representation of ground and vegetation cover effects. The proposed model, MMF‐TWI, was applied in an agricultural catchment in the UK and performance compared to published data and MMMF simulation results. Land cover spatial and temporal variability, crop type as well as farming and conservation practices were found to have a significant influence on simulated sediment yields. Our findings demonstrate: (a) that MMF‐TWI model improves predictive ability compared to the MMMF model in humid environments, (b) the importance of capturing sub‐annual variability in climate, saturated areas and land cover, (c) the ability of MMF‐TWI model to represent impacts from farming and conservation practices, and (d) the potential for MMF‐TWI model to be applied as a soil erosion management tool. Copyright © 2017 John Wiley & Sons, Ltd.

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Comparison of soil erosion models used to study the Chinese Loess Plateau

Cited by 144 publications

References 98 publications

Evaluating the new soil erosion map of Hungary—A semiquantitative approach

Evaluating the new soil erosion map of Hungary—A semiquantitative approach

Use of double mass curves in hydrologic benefit evaluations

A model for catchment soil erosion management in humid agricultural environments

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