Your search found 6 records
1 Hu, Y.; Song, W.; Yuan, G. 1993. Enhancing beneficial results relied on the technical innovation in irrigation area. In HR Wallingford. Maintenance and operation of irrigation/drainage schemes for improved performance: papers presented to the Asian Regional Symposium held in Beijing, People's Republic of China, 24-27 May 1993. Wallingford, Oxfordshire, UK: HR Wallingford. pp.4:41-50.
Technology ; Irrigation canals ; Innovations ; Essential Structural Improvement ; Case studies / China
(Location: IWMI HQ Call no: 631.7.1 G570 MAI Record No: H012687)
People's Victory Canal (PVC) is the first large-sized irrigation area built in the lower reach of the Yellow River, in China. It has played an important role in developing agricultural production and ensuring water supply for both urban and rural use since the PVC project has been completed. But this irrigated area has not given full play to its possible benefits due to the structures' aging and damage. There is an urgent need to improve its structure and management. The technical innovation pilot area was conducted during the 1986-1990 five-year plan. The results showed that this experimental project achieved a remarkable success. The most important work is to implement the engineering, managing and biological measures in a comprehensive way, to handle the silt problem aptly, to line canals at all levels, to irrigate and drain the area by a combination of both groundwater and surface water, to plan irrigation by monitoring salt and water movements in the soil and groundwater, to optimize the water distribution etc. In the wake of the innovation, good results have been achieved: to save irrigation water by 31% on an average, to reduce the amount of sedimentation by 41%, to increase the cultivated land, to raise the grain output by 9-25% and ginned cotton by 9-20%, to raise farmers' net income by 47.9%.
2 Heilig, G.; Reidinger, R.; Yang, X.; Yan, J.; Hu, Y.. 2000. Water eco-development strategies in China. In Wang, R.; Ren, H.; Ouyang, Z. (Eds.), China water vision: The eco-sphere of water, life, environment and development. Beijing, China: China Meteorological Press. pp.125-163.
Water shortage ; Water deficit ; Precipitation ; Population ; River basins ; Siltation ; Irrigation efficiency ; Evapotranspiration ; Irrigated farming ; Water resource management ; Strategy planning / China
(Location: IWMI-HQ Call no: 333.91 G592 WAN Record No: H026837)
3 Khan, S.; Mu, J.; Hu, Y.; Rana, T.; Gao, Z. 2006. Evaluating system-level impacts of alternative water-saving options. In Willett, I. R.; Gao, Z. (Eds.) Agricultural water management in China: Proceedings of a workshop held in Beijing, China, 14 September 2005. Canberra, Australia: ACIAR. pp.91-100.
Water use efficiency ; Water conservation ; Catchment areas ; Rivers ; Models ; Indicators / China / Australia / Murrumbidgee River
(Location: IWMI-HQ Call no: 631.7 G592 WIL Record No: H039223)
4 Wu, W.; Liao, R.; Hu, Y.; Wang, H.; Liu, H.; Yin, S. 2020. Quantitative assessment of groundwater pollution risk in reclaimed water irrigation areas of northern China. Environmental Pollution, 261:114173 (Online first). [doi: https://doi.org/10.1016/j.envpol.2020.114173]
Groundwater assessment ; Groundwater pollution ; Risk assessment ; Irrigation water ; Pollutants ; Water quality ; Aquifers ; River basins ; Models / China / Beijing
(Location: IWMI HQ Call no: e-copy only Record No: H049562)
(2.02 MB)
The application of reclaimed water for agricultural irrigation can effectively reduce the use of freshwater resources including groundwater, addressing the increasingly severe challenge of water shortage. However, reclaimed water irrigation will cause potential pollution risks to groundwater, which needs to be further studied to ensure the safety of reclaimed water irrigation. An integrated quantitative assessment system including the modified DRASTIC model was developed to evaluate the pollution risks caused by reclaimed water irrigation and scientific strategies were offered for the development of reclaimed water irrigation in water shortage areas to avoid groundwater pollution. The groundwater intrinsic vulnerability index, the hazards of the characteristic pollutants, and the groundwater values were quantified to obtain the pollution risks distribution map. In the Beijing plain of north China, the low groundwater pollution risk areas were located in the midstream of Chaobai river baisin, Beiyun river basin, and Yongding river basin, accounting for 48.3% of the total study area. These areas in low pollution risk can be considered as safety areas for reclaimed water irrigation. The moderate groundwater pollution risk areas accounting for 46.9% of the total study area were suggested to apply water-saving irrigation measures for preventing groundwater pollution. The reclaimed water irrigation should be prohibited in the high groundwater pollution risk areas, which accounted for 4.8% of the total study area. This study highlights the reasonable strategy for the development of reclaimed water irrigation in water shortage areas and lay a foundation for finding alternative water sources for agricultural irrigation.
5 Zhao, P.; Ma, M.; Hu, Y.; Wu, W.; Xiao, J. 2022. Comparison of international standards for irrigation with reclaimed water. Agricultural Water Management, 274:107974. [doi: https://doi.org/10.1016/j.agwat.2022.107974]
Wastewater ; Standards ; Water reuse ; Irrigation water ; Water quality ; Heavy metals ; Risk ; Farmland ; Irrigation methods
(Location: IWMI HQ Call no: e-copy only Record No: H051534)
https://www.sciencedirect.com/science/article/pii/S0378377422005212/pdfft?md5=50d618dd1ce6dd9e50423fa2e928aead&pid=1-s2.0-S0378377422005212-main.pdf
https://vlibrary.iwmi.org/pdf/H051534.pdf
https://vlibrary.iwmi.org/pdf/H051534.pdf
(0.62 MB) (636 KB)
Water shortage problems have received wide attention since the past decades as the global environment and climate continue to change. To tackle with this escalating challenge, generations of study has been conducted in the research for water utilization efficiency. Reclaimed water has been widely used in many countries for industry, agriculture and landscape. Despite the economic value and environmental benefits the reclaimed water brings,. contents such as heavy metal ions, organic pollutants and pathogenic microorganisms may enter the soil-plant-atmosphere system, thus posing potential environmental health risks. Therefore, many laws, guidelines and standards have been published to maintain the security of irrigation with reclaimed water. This paper compares the standards of irrigation with reclaimed water among different organizations and countries by analyzing the similarities and differences from different types of classification and water quality parameters requirements, in which their advantages and limitations are demonstrated. Finally, some suggestions are provided for future development and modification of the relevant standards in this field.
6 Meng, F.; Yuan, Q.; Bellezoni, R. A.; de Oliveira, J. A. P.; Hu, Y.; Jing, R.; Liu, G.; Yang, Z.; Seto, K. C. 2023. The food-water-energy nexus and green roofs in Sao Jose Dos Campos, Brazil, and Johannesburg, South Africa. npj Urban Sustainability, 3:12. [doi: https://doi.org/10.1038/s42949-023-00091-3]
Energy consumption ; Energy demand ; Water conservation ; Food security ; Food production ; Nexus approaches ; Sustainability ; Rainwater harvesting ; Environmental impact ; Ecological footprint ; Urban areas ; Carbon footprint ; Water footprint ; Transboundary waters ; Infrastructure / Brazil / South Africa / Sao Jose dos Campos / Johannesburg
(Location: IWMI HQ Call no: e-copy only Record No: H051940)
https://www.nature.com/articles/s42949-023-00091-3.pdf?pdf=button%20sticky
https://vlibrary.iwmi.org/pdf/H051940.pdf
https://vlibrary.iwmi.org/pdf/H051940.pdf
(2.52 MB) (2.52 MB)
Green roofs affect the urban food-water-energy nexus and have the potential to contribute to sustainability. Here we developed a generalizable methodology and framework for data-sparse cities to analyze the food-water-energy nexus of green roofs. Our framework integrates the environmental costs and benefits of green roofs with food-water-energy systems and makes it possible to trace energy-water-carbon footprints across city boundaries. Testing the framework in São José dos Campos (SJC), Brazil and Johannesburg, South Africa, we found that green roofs are essentially carbon neutral and net energy consumers from a life cycle perspective. SJC is a net water beneficiary while Johannesburg is a net water consumer. Rainwater utilization could save irrigated water, but requires 1.2 times more energy consumption. Our results show that SJC and Johannesburg could direct their green roof development from local food production and energy saving, respectively and highlight opportunities for green roof practices in cities.
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