Your search found 9 records
1 Li, G.; Mays, L. W. 1995. Differential dynamic programming for estuarine management. Journal of Water Resources Planning and Management, 121(6):455-462.
(Location: IWMI-HQ Call no: PER Record No: H017445)
2 Li, G.; Tang, Z.; Mays, L. W.; Fox, P. 2000. New methodology for optimal operation of soil aquifer treatment systems. Water Resources Management, 14(1):13-33.
Infiltration ; Groundwater ; Recharge ; Water quality ; Wastewater ; Percolation ; Simulation models ; Optimization / USA
(Location: IWMI-HQ Call no: PER Record No: H026235)
3 Li, G.; Mays, L. W. 2000. Successive approximation linear quadratic regulator for estuarine management problem. Water Resources Management, 14(3):157-175.
(Location: IWMI-HQ Call no: PER Record No: H027296)
4 Xu, L.; Li, G.; Mays, L.; Asce, M. 2001. Optimal operation of soil aquifer treatment systems considering parameter uncertainty. Water Resources Management, 15(2):123-147.
Aquifers ; Soils ; Optimization ; Stochastic process ; Decision support tools ; Simulation models ; Infiltration ; Wastewater ; Percolation ; Water quality / USA / Arizona
(Location: IWMI-HQ Call no: PER Record No: H029405)
5 Guo, H.; Li, G.; Zhang, D.; Zhang, X; Lu, C. 2006. Effects of water table and fertilization management on nitrogen loading to groundwater. Agricultural Water Management, 82(1/2):86-98.
Groundwater pollution ; Nitrogen ; Fertilizers ; Water balance ; Water table / China / Yunnan Province / Dianchi Lake
(Location: IWMI-HQ Call no: PER Record No: H038678)
6 Chen, D.; White, R.; Li, Y.; Zhang, J.; Li, B.; Zhang, Y.; Edis, R.; Huang, Y.; Cai, G.; Wei, Y.; Zhu, A.; Hu, K.; Li, G.; Zhu, Z. 2006. Conservation management of water and nitrogen in the North China Plain using a GIS-based water and nitrogen management model and agricultural decision support tool. 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.26-38.
Water conservation ; Irrigated farming ; Nitrogen ; Fertilizers ; Wheat ; Maize ; GIS ; Decision support tools / China / North China Plain
(Location: IWMI-HQ Call no: 631.7 G592 WIL Record No: H039219)
7 Deng, L.; Cai, L.; Sun, F.; Li, G.; Che, Y. 2020. Public attitudes towards microplastics: perceptions, behaviors and policy implications. Resources, Conservation and Recycling, 163:105096. [doi: https://doi.org/10.1016/j.resconrec.2020.105096]
Microplastics ; Public opinion ; Attitudes ; Awareness ; Behaviour ; Marine environment ; Emission reduction ; Pollution control ; Socioeconomic environment ; Public health ; Policies ; Models / China / Shanghai
(Location: IWMI HQ Call no: e-copy only Record No: H050081)
(1.14 MB)
Microplastics are ubiquitous and have been found in marine environments, organisms, salt, and even human bodies. Concern about the impact of microplastics on the ecological environment, as well as the threat of microplastics to food safety and public health is increasing among the society. However, there is currently no effective technical way to tackle and remove microplastics from the environment. Thus, public attitudes are key to reducing microplastic emissions. This study investigated the public's perceptions and attitudes towards microplastics in Shanghai and used an ordered regression model to explore the public's willingness to reduce microplastics and its influencing factors. We used random face-to-face interviews to complete a total of 437 valid questionnaires. The survey results show that only 26% of the respondents had heard of microplastics before the survey, and the majority were relatively unfamiliar with microplastics. Although the public's awareness of microplastics is low compared to that of other substances, when informed with the possibility that microplastics may affect human health, 75% of respondents became worried or even overly worried. In addition, the higher the respondents' knowledge of plastics and microplastics is, the stronger their willingness to behave. Public's concern is also an important impact factor. We found that women's willingness to reduce emissions is higher than men's and environmental protection-related practitioners are also more willing to act. Therefore, this article focuses on the public's understanding of microplastics to propose measures and policy implications to reduce microplastic emissions during the process of microplastic production and recycling.
8 Yao, Y.; Zheng, C.; Andrews, C. B.; Scanlon, B. R.; Kuang, X.; Zeng, Z.; Jeong, S.-J.; Lancia, M.; Wu, Y.; Li, G.. 2021. Role of groundwater in sustaining northern Himalayan rivers. Geophysical Research Letters, 48(10):e2020GL092354. [doi: https://doi.org/10.1029/2020GL092354]
Groundwater flow ; Rivers ; Sustainability ; Stream flow ; Groundwater recharge ; Discharges ; Hydrology ; Precipitation ; Highlands ; Models / China / Himalayan Rivers / Yarlung Zangbo Basin
(Location: IWMI HQ Call no: e-copy only Record No: H050400)
https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1029/2020GL092354
https://vlibrary.iwmi.org/pdf/H050400.pdf
https://vlibrary.iwmi.org/pdf/H050400.pdf
(4.10 MB) (4.10 MB)
The Himalayas are critical for supplying water for ~2 billion people who live downstream, and available water is highly sensitive to climate change. The role of the groundwater system in sustaining the northern Himalayan rivers remains unknown, and this compromises Asia's future water sustainability. Here, we quantify the spatiotemporal contribution of groundwater to river flows in the Yarlung Zangbo Basin (upper reaches of Brahmaputra). Our results show that the groundwater recharge represents ~23% of mean annual precipitation, translating into ~30 km3/yr of baseflow, which contributes ~55% of the total river discharge in the upstream reaches to ~27% in the downstream reaches. The percentage of groundwater contribution is inversely related to topographic steepness and total precipitation, with the steepest topography and highest precipitation in the eastern Himalayas. This study fills a knowledge gap on groundwater in the Himalayas and is a foundation for projecting water changes under climatic warming.
9 Wijeratne, V. P. I. S.; Li, G.. 2022. Urban sprawl and its stress on the risk of extreme hydrological events (EHEs) in the Kelani River Basin, Sri Lanka. International Journal of Disaster Risk Reduction, 68:102715. [doi: https://doi.org/10.1016/j.ijdrr.2021.102715]
River basins ; Hydrological cycle ; Extreme weather events ; Floods ; Land use ; Land cover ; Urban areas ; Geographical information systems ; Remote sensing ; Landsat ; Climate change ; Water levels ; Models ; Normalized difference vegetation index / Sri Lanka / Kelani River Basin / Colombo
(Location: IWMI HQ Call no: e-copy only Record No: H050785)
(10.00 MB)
Land modification and urban sprawl cause incremental changes in hydrological processes due to the results of novel or hybrid ecosystems. This study mainly investigated the unforeseen urban expansion in the lower Kelani River basin, Sri Lanka, and its impact on the increment of hydrological extremes. Remote sensing data, including night-time light images (NOAA/AVHRR) and Landsat (TM/ETM+/OLI) data of different wavelengths, were analysed in this study. Land use and land cover data of the river basin were obtained from 1995. Shannon's entropy was used to demarcate urban sprawl in the river basin over nearly two decades. A spatial regression model was built to identify the correlation between increments of hydrological extremes and urban sprawl. This study revealed that the Kelani River basin has experienced a high urban sprawl rate over the past 23 years and that the total urban land area has increased by 130%. The flood risk analysis revealed that the flood frequency has also dramatically increased due to urban sprawl, and nearly 20 minor flood events have been recorded over the last two decades. Most of the urban areas situated in the lower river basin have invaded into the area with a higher flood risk, and the total flood damage has increased over the study period. The built-up land extent increased from 24.07 km2 to 56.39 km2. In 2018, the flood plain and the lower basin were mostly occupied by human settlements. Therefore, it is essential to improve current policies and mitigation plans to minimize the negative impact of rapid urban sprawl in the study area.
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