Drainage optimization of paddy field watershed for diffuse phosphorus pollution control and sustainable agricultural development

Liu, Lianhua; Ouyang, Wei; Liu, Hongbin; Zhu, Jianqiang; Fan, Xiangtao; Zhang, Fu-Lin; Ma, Youhua; Chen, Jingrui; Hao, Fang; Lian, Zhongmin

doi:10.1016/j.agee.2020.107238

Cited by 28 publications

(20 citation statements)

References 51 publications

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“…The structural limitations pertaining to simulating rice paddies in standard SWAT codes described above have resulted in several research efforts to modify the model to better represent rice paddy water balance dynamics [15,[60][61][62][63][64]190] , irrigation systems used to support rice production [60,61,63,64,[83][84][85] , or pesticide transport [61,62,189] or nutrient transport [181,191,192] in paddy systems. Some of the modified models feature adaptations of the original pothole routine in order to simulate rice paddy hydrology similar to that depicted in Figure 12 [60][61][62]64,181,[190][191][192] . Other efforts feature entire new rice paddy modules rather than adapting the pothole routine [65,67] .…”

Section: Overview Of Recently Modified Swat Approachesmentioning

confidence: 99%

“…Figure 12 shows a schematic of a typical representation of rice paddy water dynamics that have been reported in the literature for several modified SWAT models and for APEX-Paddy [15,[60][61][62][63][64]67,[83][84][85]180,181,190,191,192] .…”

Section: Typical Depiction Of Rice Paddies In Modified Swat Models An...mentioning

confidence: 99%

“…488. The PCPF-1@SWAT and PCPF-1@SWAT2012 models are primarily described in Section 5.1.3, and SWAT-RP is primarily discussed in Section 5.1.4 along with two other modified SWAT models [181,191,192] and APEX-Paddy [67] .…”

Section: Modified Swat Models Developed In Japan and Indiamentioning

confidence: 99%

“…The SWAT-P model [191,192] is a modified version of SWAT2012 (Rev 635) that uses a restructured pothole module to more realistically represent paddy hydrology and pollutant dynamics, which is a further adaptation of the SWAT-N 2 O coupler [181] (SWAT-P is referred to as SWAT-Paddy in the title of the study reported by Ouyang et al (2019) [191] ). The ability of SWAT-P to replicate total P movement for rice production systems was further confirmed for the 121.4 km 2 Fushui River Watershed (Table 4), which is located in Hubei Province in East-central China [192] .…”

Section: 13mentioning

confidence: 99%

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Simulation of rice paddy systems in SWAT: A review of previous applications and proposed SWAT+ rice paddy module

Gassman

Jeong

Boulangé

et al. 2022

International Journal of Agricultural and Biological Engineering

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The Soil and Water Assessment Tool (SWAT) is an ecohydrological watershed-scale model which was initially developed in the early 1990s to simulate the impacts of land use, management systems, and climate on hydrology and/or water quality. First adopted in the U.S., the use of the model then spread to Europe and then later to Asia and other regions. The range of applications that SWAT has been applied to have also expanded dramatically, which influenced ongoing model development which has been virtually continuous over the past two decades. A key component of many SWAT applications in Asia is accounting for rice paddy production that is common in some subregions within the continent. However, most of these studies do not provide explicit details of how rice production was simulated in SWAT. Other research has revealed that significant problems occur when trying to represent rice paddy systems in standard versions of SWAT, due to limitations in algorithms based on the runoff curve number approach or the pothole option. In response, key modifications have been made to SWAT in recent studies that have resulted in a more accurate representation of rice paddy systems. These developments point to the need for the incorporation of an enhanced rice paddy module within SWAT to better capture rice paddy hydrological and pollutant dynamics, which would support improved use of the model in Asia and other rice production regions. Subtopics related to simulating rice production in SWAT are discussed as follows: 1) an overview of global rice production; 2) history of SWAT development; 3) typical approaches for simulating rice production; 4) problems associated with the typical approaches; 5) recent code modifications to address deficiencies in replicating rice paddy systems; 6) recommendations for developing a standard rice paddy module for future SWAT codes.

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Section: Overview Of Recently Modified Swat Approachesmentioning

confidence: 99%

Section: Typical Depiction Of Rice Paddies In Modified Swat Models An...mentioning

confidence: 99%

Section: Modified Swat Models Developed In Japan and Indiamentioning

confidence: 99%

Section: 13mentioning

confidence: 99%

See 2 more Smart Citations

Simulation of rice paddy systems in SWAT: A review of previous applications and proposed SWAT+ rice paddy module

Gassman

Jeong

Boulangé

et al. 2022

International Journal of Agricultural and Biological Engineering

Self Cite

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“…Recent studies have focused on the dual functions of DPSs as drainage pathways and ecological wetlands (Evenson et al., 2018; Liu et al., 2021). As spontaneous and complex landscape patterns, DPSs have obvious effects on drainage processes, enhancing the complexity of spatial heterogeneity at the catchment scale (Li et al., 2019; Reulier et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

New Modeling Framework for Describing the Pollutant Transport and Removal of Ditch‐Pond System in an Agricultural Catchment

Cheng

Chen

Liu

et al. 2021

Water Resources Research

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Ditch‐pond systems (DPSs) play a key role in hydrologic regulation and pollutant removal in agricultural regions, yet there is a lack of quantitative tools that describe their complex transport and removal processes across spatial scales. To fill this gap, a new modeling framework is proposed by implementing three improvements based on the typical watershed models: (a) the explicit rasterization of natural‐artificial drainage, (b) accurate spatial representations of ditches and ponds, and (c) the development of a pollutant‐removal module. This framework is exemplified for a DPS‐dominated catchment in the Three Gorges Reservoir Region, China. The results revealed that 55.36% of the drainage areas in this catchment were dominated by ditch networks, highlighting the significant impacts of artificial factors. The results simulated by the new framework also indicated the great impacts of specific pond distributions on pollutant removal. In this context, pollutant exports in DPSs were distinctly lower than that in natural situation modeling, about 25.14%–46.65% of pollutants are removed by DPSs. On this basis, the scenario analysis also explored the critical placements of ponds and ditches to optimize pollutant removal and to enhance agricultural management in DPSs. This new framework is available for other real DPS‐dominated catchments with potential applications in typical model augmentations and improvements.

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Integrated Planning for Water Pollution Control in Suburban Regions in South-Eastern China

Yu,

Shentu,

Wang

et al. 2024

Lecture Notes in Civil Engineering

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Drainage optimization of paddy field watershed for diffuse phosphorus pollution control and sustainable agricultural development

Cited by 28 publications

References 51 publications

Simulation of rice paddy systems in SWAT: A review of previous applications and proposed SWAT+ rice paddy module

Simulation of rice paddy systems in SWAT: A review of previous applications and proposed SWAT+ rice paddy module

New Modeling Framework for Describing the Pollutant Transport and Removal of Ditch‐Pond System in an Agricultural Catchment

Integrated Planning for Water Pollution Control in Suburban Regions in South-Eastern China

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