The water footprint challenge for water resources management in Chilean arid zones

Alvarez, Pablo Jorge Masías

doi:10.1080/02508060.2018.1516092

Cited by 28 publications

(7 citation statements)

References 13 publications

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“…(2) Majiagou receives domestic sewage from the central urban area of the city. This sewage contains plastic products produced in the plant area, industrial wastes, and agricultural production wastewater discharged in the agricultural area, which is closely related to the population density [38]. In follow-up research, the effects of human activities on MPs will be examined.…”

Section: Discussionmentioning

confidence: 99%

“…The reason that the abundance of MPs in Majiagou (a tributary) was higher than that in the Songhua River (the mainstream) was that Majiagou received MPs that had been discharged from domestic wastewater, production, and domestic plastic wastes, as well as from industrial and agricultural production from urban areas throughout the city center. The mainstream Songhua River has a large water flow, and because of this, MPs could not easily accumulate [38]. The urban inland river input greatly affected the abundance of MPs at SH5 and SH6 in the upstream and downstream Majiagou River estuary, resulting in a sharp increase in the abundance of MPs.…”

Section: Mps In Ice Of Urban Inland Riversmentioning

confidence: 99%

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Microplastic Occurrence Characteristics and Ecological Risk Assessment of Urban River in Cold Regions during Ice-Covered Periods

Chen,

Liao,

Zeng

et al. 2024

Sustainability

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This paper focuses on the Harbin section of the Songhua River in the cold region of northern China. The occurrence characteristics and pollution level of microplastics (MPs) are explored in both the ice and water of urban inland rivers and estuaries during the ice-covered periods. The abundance of MPs in Majiagou ice averaged 324.4 ± 261.5 particles/L, and the abundance of MPs in Songhua ice averaged 65.0 ± 68.2 particles/L. In the water with different depths of Songhua, the MP abundance ranged from 1.0 ± 0.7 particles/L to 12.9 ± 9.4 particles/L, with an average of 5.6 ± 7.6 particles/L. The amount of MPs in ice is about 11 times that in water, where ice formation is mainly responsible for the decline in the MP abundance in aquatic environments. The abundance of MPs in urban inland rivers gradually increased from south to north, while that in the mainstream of the Songhua River showed an increasing trend from east to west. Detected MPs were mainly fiber and white in shape and color, respectively, with a particle size < 0.5 mm. The extent of microplastics in ice is greater than that in water, and melting in the following spring will exacerbate the environmental impact. The results identified the discharge of domestic sewage as the main source of MPs in urban inland rivers. Polyethylene, polypropylene, and polyacrylonitrile were the main types of polymers. The results of the ecological risk assessment showed that the MP pollution in the Harbin section of the Songhua River reached moderate and severe pollution levels during the ice-covered periods. Its potential risk should receive more attention, and control should be strengthened.

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Section: Discussionmentioning

confidence: 99%

Section: Mps In Ice Of Urban Inland Riversmentioning

confidence: 99%

Microplastic Occurrence Characteristics and Ecological Risk Assessment of Urban River in Cold Regions during Ice-Covered Periods

Chen,

Liao,

Zeng

et al. 2024

Sustainability

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“…While water is a precious resource all around the world, pollution is today a significant cultural concern, limiting long-term economic growth. The most significant aspect of water pollution is non-point source pollution, which is the most complicated to control [1]. Because non-point source pollution is tightly tied to human activities and environmental elements such as soil, atmosphere, hydrology, and vegetation, it is difficult to monitor it for spatial and temporal changes [2].…”

Section: Introductionmentioning

confidence: 99%

Study of Non-Point Pollution in the Ashe River Basin Based on SWAT Model with Different Land Use

Chen

Nie

et al. 2022

Water

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The Ashe River Basin (ARB), long known as the “Golden Waterway” in Manchu, has become one of China’s most polluted rivers. The basin area of the Ashe River is 3545 km2 and the total length of the river is 257 km. There have not been specific studies on land use change and non-point pollution in the ARB region. This paper uses the ARB watershed as the study area, simulates the watershed using the SWAT (Soil and Water Assessment Tool) model, and analyzes the hydrological processes and the temporal and spatial changes of total nitrogen and total phosphorus in the watershed with hydrology and water quality as the objectives under different periods of land use to reduce pollution in the watershed and protect the environment. The results show that the simulation of runoff, and even theR2 and NS(both the coefficient of determination and the Nash–Sutcliffe efficiency coefficient are simulated by SWAT-CUP, which is generally used to validate the simulation results of the hydrological model, where the closer the result is to 1, the better the effect) of total nitrogen and total phosphorus in the watershed, are also all above 0.75 and have good applicability during regular and validation periods. Since 2000, the simulated monthly average total nitrogen and total phosphorus levels have progressively grown. The most polluted areas are concentrated in the middle and lower reaches of the watershed near the main streams owing to the rise in load per unit area caused by the collection of pollutants from the upper watershed to the watershed outlet, and even an increase in fertilizer application due to the larger area of cultivated land.

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“…In recent years, the Chinese economy has developed rapidly, and the process of sponge city planning has been accelerated as the phenomenon of ecological water resource wastage has become increasingly serious and ecological water resource shortages have greatly impacted people’s lives. Given the present situation regarding ecological water resource shortages and the deteriorating water environment, coordinating the rational development and utilization of ecological water resources, and enhancing the service function of the water ecosystem, have become urgent tasks [ 5 , 6 , 7 , 8 , 9 ]. The assessment of the service value of the water ecosystem can help people to better understand the value of ecological water resources and promote the sustainable development of ecological water resources [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

The Economic Value of Water Ecology in Sponge City Construction Based on a Ternary Interactive System

Zhou

Wang²,

Wang³

et al. 2022

IJERPH

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Ecological water resources occupy a vital position in the national economy; without sufficient ecological water resources, the construction and economic development of sponge cities would be seriously restricted. Appropriately, the Chinese government proposed that sponge city planning should be carried out in accordance with the number of available ecological water resources. The government therefore put forward the method of conservation and intensification to solve the problem of water shortage. This paper highlights the interactions between ecological water resources, sponge cities, and economic development in northern China, starting with the interaction and mechanism of action that concerns ecological water resource utilization, sponge cities, and economic development. In the empirical test, the dynamic changes of the three indicators were analyzed empirically using the panel data vector autoregression method, and the dynamic relationship of each factor was measured using generalized moment estimation. It was found that ecological water resources are a key factor in promoting regional economic development, and the relationship between ecological water resources and sponge cities is both supportive and constraining; therefore, the constraints that ecological water resources place on sponge cities also indirectly affects economic development. To disconnect the use of water and ecological resources from economic development, it is necessary to note the following: the feedback effect of economic development and the resolution of the contradiction between sponge cities, water, and ecological resource use.

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The water footprint challenge for water resources management in Chilean arid zones

Cited by 28 publications

References 13 publications

Microplastic Occurrence Characteristics and Ecological Risk Assessment of Urban River in Cold Regions during Ice-Covered Periods

Microplastic Occurrence Characteristics and Ecological Risk Assessment of Urban River in Cold Regions during Ice-Covered Periods

Study of Non-Point Pollution in the Ashe River Basin Based on SWAT Model with Different Land Use

The Economic Value of Water Ecology in Sponge City Construction Based on a Ternary Interactive System

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