Exploring the spatiotemporal variations in regional rainwater harvesting potential resilience and actual available rainwater using a proposed method framework

Yao, Jiping; Wang, Guoqiang; Jiang, Xiaohui; Xue, Baolin; Wang, Yuntao; Duan, Limin

doi:10.1016/j.scitotenv.2022.160005

Cited by 9 publications

(12 citation statements)

References 61 publications

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“…Although human activities play a dominant role, climate change also contributes to the increase in drought intensity in the Hunhe basin. The increase in vegetation coverage may be the main driving factor affecting the long‐term water consumption trend in the Hunhe basin, which is closely related to afforestation activities (Jiang et al, 2023; Yao et al, 2023). The increase in vegetation coverage intercepts and evaporates rainwater, and vegetation can also block runoff and change the soil infiltration rate, thus affecting vegetation transpiration and soil evaporation (Zhang et al, 2021).…”

Section: Discussionmentioning

confidence: 99%

“…The vegetation types mainly include farmland and grassland. In response to the government's 'returning farmland to forests and grasslands' policy since 2000, the basin has carried out large-scale afforestation and grassland restoration programs (Yao et al, 2023).…”

Section: Study Areamentioning

confidence: 99%

“…Furthermore, this study considers a range of human activities, such as afforestation, irrigation water intake, and dam construction. The primary change in human activities during the study period was altering vegetation cover (Yao et al, 2023).…”

Section: Attribution Of Drought Intensification To Climate Change And...mentioning

confidence: 99%

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Attribution of runoff and hydrological drought changes in an ecologically vulnerable basin in semi‐arid regions of China

Li,

Wang,

Xue

et al. 2023

Hydrological Processes

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Climate change and human activities have been widely recognized as two major factors that deeply influence hydrological processes. Evaluating and identifying the contribution between different drivers contributes to better regional water management regulation. In this study, we used the variable infiltration capacity (VIC) model to quantify the contributions of different climatic variables and human activities to runoff in the Hunhe basin, which has a semiarid climate, in northern China. Through trend analysis, the study period is divided into the ‘baseline period’ (1982–1999) and the ‘change period’ (2000–2020). The results indicated that compared with climate change, human activities were the major factors decreasing runoff, contributing more than 86.3% to the runoff reduction in the change period. Climate change increased winter runoff but decreased summer and autumn runoff, resulting in an overall decrease in runoff. There is a trend of increasing severity of hydrological drought in the Hunhe basin, where climate change accounted for 28.2% of the total impact and human activities accounted for 72.8%. The change in runoff and hydrological drought was mainly due to human activities, including changing farmland to grassland and forest. These results would be helpful for policy‐makers and researchers to better understand the responses of runoff and hydrological drought to these changing environmental conditions and offering references for future water resource planning and management at the basin scale.

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Section: Discussionmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

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Attribution of runoff and hydrological drought changes in an ecologically vulnerable basin in semi‐arid regions of China

Li,

Wang,

Xue

et al. 2023

Hydrological Processes

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“…In addition, as an important factor promoting atmospheric circulation, ET is also sensitive to climate change [7]. Therefore, it is critical to accurately estimate ET and reveal its spatiotemporal differentiation law for exploring the evolution and interaction mechanisms of water cycle components, as major climate change and increasing human activities continue to seriously impact the global natural ecosystem [8,9]. However, the lack of basic observation data and the limitation of the spatiotemporal resolution of remote sensing data make it difficult to accurately obtain long-term and large-scale surface ET.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Framework for Simulating Actual Evapotranspiration in Data-Deficient Areas: A Case Study of the Inner Mongolia Section of the Yellow River Basin

Jiang

Wang

et al. 2023

Remote Sensing

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Evapotranspiration (ET) plays an import role in transferring water and converting energy in the land‒atmosphere system. Accurately estimating ET is crucial for understanding global climate change, ecological environmental problems, the water cycle, and hydrological processes. Machine learning (ML) algorithms have been considered as a promising method for estimating ET in recent years. However, due to the limitations associated with the spatial–temporal resolution of the flux tower data commonly used as the target set in ML algorithms, the ability of ML to discover the inherent laws within the data is reduced. In this study, a hybrid framework was established to simulate ET in data-deficient areas. ET simulation results of a coupled model comprising the Budyko function and complementary principle (BC2021) were used as the target set of the random forest model, instead of using the flux station observation data. By combining meteorological and hydrological data, the monthly ET of the Inner Mongolia section of the Yellow River Basin (IMSYRB) was simulated from 1982 to 2020, and good results were obtained (R2 = 0.94, MAE = 3.82 mm/mon, RMSE = 5.07 mm/mon). Furthermore, the temporal and spatial variations in ET and the influencing factors were analysed. In the past 40 years, annual ET in the IMSYRB ranged between 241.38 mm and 326.37 mm, showing a fluctuating growth trend (slope = 0.80 mm/yr), and the summer ET accounted for the highest proportion in the year. Spatially, ET in the IMSYRB showed a regular distribution of high ET in the eastern region and low ET in the western area. The high ET value areas gradually expanded from east to west over time, and the area increased continuously, with the largest increase observed in the 1980s. Temperature, precipitation, and normalized difference vegetation index (NDVI) were found to be the most important factors affecting ET in the region and play a positive role in promoting ET changes. These results provide an excellent example of long-term and large-scale accurate ET simulations in an area with sparse flux stations.

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“…Dentre as estratégias existentes, o sistema de captação de água da chuva fornece uma base para aliviar a seca regional e a escassez de água. A resiliência do potencial de captação de água de chuva está diretamente relacionada ao nível sustentável de água de chuva real disponível (Yao, 2022). Dentre as alternativas de captação de água, podemos citar os telhados verdes, bacias de retenção, canteiros de evapotranspiração, sistemas tipos wetlands construídos, filtros de areia, áreas de biorretenção e sistemas de armazenamento como as cisternas (TASSI et al, 2014).…”

Section: Introductionunclassified

Análise do aproveitamento de água da chuva para fins não potáveis em praça municipal de concórdia, Santa Catarina

Tobias¹,

Zini²,

Mores³

et al. 2023

R. G. Secr.

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O aumento de áreas pavimentadas nas cidades está diretamente relacionado com alagamentos, concentrando volumes escoados em áreas com baixas taxas de infiltração. Em busca de ações que possibilitem o amortecimento do volume escoado e com possibilidade de uso dessa água são empregadas as técnicas compensatórias de drenagem, alternativas cuja as funções poderão ser de armazenamento, e ou infiltração. Neste contexto, esse trabalho teve como objetivo dimensionar um sistema de captação de águas pluviais para fins não potáveis para a Praça Dogello Goss, pertencente ao município de Concórdia, Santa Catarina. Para isso em um primeiro momento, foi realizado o levantamento do volume de escoamento superficial produzido na praça, considerando a precipitação do 2018. Posteriormente, baseado na literatura estimou-se o volume de água necessário para rega de jardins e gramados, bem como para lavagem de calçadas. E por fim, dimensionou-se um sistema de armazenamento e pré-tratamento de água pluvial, constituído por uma cisterna seguido de um filtro de pedra. De acordo com resultados obtidos, identificou-se que com a área impermeabilizada disponível na praça, precipitações superiores a 5 mm h-1 geram escoamento no qual possibilita o armazenado de água pluvial. Esse volume precipitado é frequente na região. Considerando os usos de água da praça para fins não potáveis (regas de jardins e lavagem de calçadas) a demanda semanal da praça foi de 14,6 m³. Diante dessa demanda a cisterna dimensionada apresentou um volume útil de 30 m³, sendo que esse volume está vinculado com um tempo de armazenamento de água de no mínimo 15 dias. Por fim destaca-se, que a utilização de um sistema de armazenamento e pré-tratamento associado da reutilização de água para fins não potáveis na praça estuada, diminuiu em média 8% do volume de escoamento gerado na área impermeável da praça, indicando ser uma boa alternativa para contribuir na drenagem urbana das cidades urbanizadas.

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Exploring the spatiotemporal variations in regional rainwater harvesting potential resilience and actual available rainwater using a proposed method framework

Cited by 9 publications

References 61 publications

Attribution of runoff and hydrological drought changes in an ecologically vulnerable basin in semi‐arid regions of China

Attribution of runoff and hydrological drought changes in an ecologically vulnerable basin in semi‐arid regions of China

A Hybrid Framework for Simulating Actual Evapotranspiration in Data-Deficient Areas: A Case Study of the Inner Mongolia Section of the Yellow River Basin

Análise do aproveitamento de água da chuva para fins não potáveis em praça municipal de concórdia, Santa Catarina

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