Identification of critical areas and evaluation of best management practices using SWAT for sustainable watershed management

Uniyal, Bhumika; Jha, Madan K.; Verma, Arvind; Anebagilu, Prajna Kasargodu

doi:10.1016/j.scitotenv.2020.140737

Cited by 73 publications

(34 citation statements)

References 49 publications

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“…Dessa forma, a identificação de áreas críticas quanto às áreas mais afetadas pela ausência de matas ciliares, não apenas direcionará a atenção de planejadores e gestores para a zona mais problemática, mas também reduzirá o custo econômico envolvido na abordagem de medidas de conservação do solo e da água [4]. Considerando que o desenvolvimento humano, que envolve expectativa de vida, educação e renda, tem efeito positivo no crescimento e na conservação da floresta [50], é necessário o desenvolvimento de políticas públicas que favoreçam o aumento do nível educacional e a redução da desigualdade, visando delimitar a expansão desordenada das atividades antrópicas.…”

Section: Integridade Da Mata Ciliarunclassified

“…Ações de gestão do uso e ocupação da terra em bacias hidrográficas desempenham um papel fundamental na priorização, planejamento e gerenciamento do uso de recursos hídricos, sendo de fundamental importância que pesquisadores, gestores e tomadores de decisão examinem tal questão, com o intuito de se desenvolver políticas e planos que garantam um desenvolvimento sustentável [1][2][3][4].…”

Section: Introductionunclassified

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Relação entre a integridade da mata ciliar e a distribuição de renda na Bacia Hidrográfica do Rio Una

Sales

Silva²,

Simonetti³

et al. 2021

Sci. Plena

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Matas ciliares exercem funções ambientais fundamentais para o equilíbrio ecossistêmico, contudo, essas áreas são frequentemente submetidas à intensas perturbações em virtude de atividades antropogênicas. Dessa forma, o presente estudo avaliou a relação da integridade da mata ciliar da Bacia Hidrográfica do Rio Una em função da distribuição de renda da região, utilizando dados do Índice de Desenvolvimento Humano e o mapeamento da cobertura e uso da terra. Os resultados demonstraram que 23,3% da área total das áreas de preservação permanente mapeadas é composta por atividades referentes à agropecuária. Também foi verificado que as áreas com os menores valores de integridade de mata ciliar ocorrem em áreas com renda baixa e média. O estudo traz à luz a necessidade de formulação de políticas públicas que auxiliem na tomada de decisão e que sejam capazes de reverter a desigualdade de renda na região, permitindo um maior desenvolvimento econômico que não esteja vinculado à degradação do meio ambiente.

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Section: Integridade Da Mata Ciliarunclassified

Section: Introductionunclassified

Relação entre a integridade da mata ciliar e a distribuição de renda na Bacia Hidrográfica do Rio Una

Sales

Silva²,

Simonetti³

et al. 2021

Sci. Plena

View full text Add to dashboard Cite

show abstract

“…Usually, identifying sediment sources and prioritizations of hot spot areas to soil erosion is required for a proper watershed management as resources (human, technological and financial) are limited [11][12][13]. In this regard, estimations of the soil loss and identifying different management practices that suits the agroecology of a particular study is required [8,14].…”

Section: General Backgroundmentioning

confidence: 99%

“…Management practices (BMPs) are preferred to manage soil loss from critical areas [13,19]. The selection of best management practices that helps to reduce soil erosion and sediment loss requires a systematic research that allows to assess the effectiveness of the practices.…”

Section: The Application Of Agricultural and Structural Based Management Practices Called Bestmentioning

confidence: 99%

The status of soil erosion in the Upper Blue Nile Basin: Identification of hot spot Areas and Evaluation of Best Management Practices in the Toba Watershed

Dibaba¹,

Ebsa²

2021

Preprint

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Land degradation caused by soil erosion has become the most serious problem in the Ethiopian highlands. Quantifying the spatial variations of soil loss with a strong evidence helps to prioritize the watersheds for the implementation of different management practices. The study was carried out in the Toba Watershed of the Upper Blue Nile Basin in Ethiopia. Its objective was to evaluate the rate of soil erosion and identify the hotspots with high risk of soil erosion for watershed management planning. Then, Soil and Water Assessment Tool (SWAT) was used to evaluate the effectiveness of best management practices (BMP) in reducing soil loss. The performance of SWAT in simulating streamflow and sediment yield was evaluated through sensitivity analysis, uncertainty, calibration and validation process. Statistically, the calibrated and validated sediment yields (SY) against the observed sediment data were reasonably accurate (R2 = 0.67, 0.65, NSE = 0.66, 0.64, PBIAS=-8.4%, 9.8% respectively). The annual SY in Toba watershed varies from 0.09 t ha− 1 yr− 1 to 44.8 t ha− 1 yr− 1 with an average SY of 22.7 t ha− 1 yr− 1. To prioritize the SY of the watershed, the annual severity of SY was divided into six classes: very low, low, moderate, high, very high and severe. The study also showed that SY in most watersheds (about 53.8%) were higher than the average. Cultivation on steep slopes leads to the highest SY, while forested areas have lower SY contribution. five management scenarios were evaluated using the Calibrated model. Seventeen sub-basins with SY exceeding the tolerable erosion of Ethiopia (t ha− 1 yr− 1) were considered for the analysis of the BMP scenario. The results show that reforestation combined with vegetative strips was the most effective for soil erosion control (87.8% reduction) followed by the combination of soil/stone bund and vegetative strips (83.7% reduction). Overall, the results of this study provided important data for watershed management and are very useful to ensure the sustainable management of land and natural resources at watershed level.

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“…When optimized with field data, the model can serve as a tool to predict how land use change will impact nitrate, phosphorous, sediment, and bacteria loading into the lake [95]. This tool would serve as a cost-effective way to justify management projects before major investment [96].…”

Section: Soil and Water Assessment Tool (Swat) Assessmentmentioning

confidence: 99%

Lake Atitlan: A Review of the Food, Energy, and Water Sustainability of a Mountain Lake in Guatemala

2021

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This paper summarizes the findings of an extensive review of literature that was conducted to understand the historical state of the food, energy, and water nexus in the Lake Atitlan basin and to recommend incentive-based, long-term sustainable policies to become a significant driver to Guatemala’s tourism industry and GDP growth. The SWAT (Soil and Water Assessment Tool) was implemented in the basin to work towards the goal of simulating nutrient loading. A key conclusion of this review study is for the local population to have advocacy for the “zero wastewater discharge to Lake Atitlan” initiative to bring long-term benefits to lake water quality. One of the recommended policy decisions is to seek external financing from international agencies like the World Bank at low-cost interest (IDA Loans) to implement waste management systems and pay this external debt by putting a small but affordable tax on tourists visiting the lake. Once a culture of zero municipal effluent discharge to Lake Atitlan is adopted by the local population, the livelihood of residents will become sustainable and the standard of living will increase because of improved water and air quality, making Lake Atitlan a haven of tourism for Guatemala and lifting its economy.

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Identification of critical areas and evaluation of best management practices using SWAT for sustainable watershed management

Cited by 73 publications

References 49 publications

Relação entre a integridade da mata ciliar e a distribuição de renda na Bacia Hidrográfica do Rio Una

Relação entre a integridade da mata ciliar e a distribuição de renda na Bacia Hidrográfica do Rio Una

The status of soil erosion in the Upper Blue Nile Basin: Identification of hot spot Areas and Evaluation of Best Management Practices in the Toba Watershed

Lake Atitlan: A Review of the Food, Energy, and Water Sustainability of a Mountain Lake in Guatemala

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