Your search found 5 records
1 Zegelin, S. J.; White, I.. 1982. Design for a field sprinkler infiltrometer. Soil Science Society of America Journal, 46(6):1129-1133.
(Location: IWMI-HQ Call no: P 1980 Record No: H08548)
2 Macdonald, B. C. T.; White, I.; Heath, L.; Smith, J.; Keene, A. F.; Tunks, M.; Kinsela, A. 2006. Tracing the outputs from drained acid sulphate flood plains to minimize threats to coastal lakes. In Hoanh, Chu Thai; Tuong, T. P.; Gowing, J. W.; Hardy, B. (Eds.). Environment and livelihoods in tropical coastal zones: managing agriculture, fishery, aquaculture conflicts. Wallingford, UK: CABI; Los Banos, Philippines: International Rice Research Institute (IRRI); Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.99-106. (Comprehensive Assessment of Water Management in Agriculture Series 2)
Flood plains ; Water quality ; Water pollution ; Drainage ; Environmental effects ; Estuaries / Australia
(Location: IWMI-HQ Call no: IWMI 639.8 G000 HOA Record No: H039109)
3 White, I.; Melville, M.; Macdonald, B. C. T.; Quirk, R.; Hawken, R.; Tunks, M.; Buckley, D.; Beattie, R.; Heath, L.; Williams, J. 2006. From conflict to industry – regulated best practice guidelines: a casestudy of estuarine flood plain management of the Tweed River, Eastern Australia. In Hoanh, Chu Thai; Tuong, T. P.; Gowing, J. W.; Hardy, B. (Eds.). Environment and livelihoods in tropical coastal zones: managing agriculture, fishery, aquaculture conflicts. Wallingford, UK: CABI; Los Banos, Philippines: International Rice Research Institute (IRRI); Colombo, Sri Lanka: International Water Management Institute (IWMI) pp.107-125. (Comprehensive Assessment of Water Management in Agriculture Series 2)
Flood plains ; Drainage ; Rivers ; Estuaries ; Ecosystems ; Soil management / Australia / Tweed River
(Location: IWMI-HQ Call no: IWMI 639.8 G000 HOA Record No: H039110)
4 White, I.; Falkland, T.; Metutera, T.; Katatiya, M.; Abete-Reema, T.; Overmars, M.; Perez, P.; Dray, A. 2008. Safe water for people in low, small island Pacific nations: the rural–urban dilemma. Development, 51:282–287.
Water supply ; Sanitation ; Environmental effects ; Public health ; Diseases / Pacific Islands / Kiribati
(Location: IWMI HQ Call no: e-copy only Record No: H041528)
The issue of ensuring that growing communities in small island countries have access to safe water and adequate sanitation is examined in Kiribati, whose islands are spread over three million square kilometres in the central Pacific. Its coral island communities have water supply and sanitation problems among the most difficult in the world. Formulaic developed-world approaches, models, techniques and toolboxes that do not consider the social and cultural context have had little success. Changes in approach at the international, national and local levels are called for, and the resourcing of village-level water and sanitation committees would return ownership and control in rural communities to its traditional base.
5 Xue, J.; Huo, Z.; Wang, S.; Wang, C.; White, I.; Kisekka, I.; Sheng, Z.; Huang, G.; Xu, X. 2020. A novel regional irrigation water productivity model coupling irrigation- and drainage-driven soil hydrology and salinity dynamics and shallow groundwater movement in arid regions in China. Hydrology and Earth System Sciences, 24(5):2399-2418. [doi: https://doi.org/10.5194/hess-24-2399-2020]
Irrigation water ; Water productivity ; Models ; Irrigation canals ; Drainage systems ; Groundwater table ; Hydrology ; Salinity ; Cropping patterns ; Soil moisture ; Crop water use ; Crop production ; Sunflowers ; Wheat / China / Jiefangzha Irrigation District
(Location: IWMI HQ Call no: e-copy only Record No: H049768)
https://www.hydrol-earth-syst-sci.net/24/2399/2020/hess-24-2399-2020.pdf
https://vlibrary.iwmi.org/pdf/H049768.pdf
https://vlibrary.iwmi.org/pdf/H049768.pdf
(3.87 MB) (3.87 MB)
The temporal and spatial distributions of regional irrigation water productivity (RIWP) are crucial for making decisions related to agriculture, especially in arid irrigated areas with complex cropping patterns. Thus, in this study, we developed a new RIWP model for an irrigated agricultural area with complex cropping patterns. The model couples the irrigation- and drainage-driven soil water and salinity dynamics and shallow groundwater movement in order to quantify the temporal and spatial distributions of the target hydrological and biophysical variables. We divided the study area into 1 km × 1 km hydrological response units (HRUs). In each HRU, we considered four land use types: sunflower fields, wheat fields, maize fields, and uncultivated lands (bare soil). We coupled the regional soil hydrological processes and groundwater flow by taking a weighted average of the water exchange between unsaturated soil and groundwater under different land use types. The RIWP model was calibrated and validated using 8 years of hydrological variables obtained from regional observation sites in a typical arid irrigation area in North China, the Hetao Irrigation District. The model simulated soil moisture and salinity reasonably well as well as groundwater table depths and salinity. However, overestimations of groundwater discharge were detected in both the calibration and validation due to the assumption of well-operated drainage ditch conditions; regional evapotranspiration (ET) was reasonably estimated, whereas ET in the uncultivated area was slightly underestimated in the RIWP model. A sensitivity analysis indicated that the soil evaporation coefficient and the specific yield were the key parameters for the RIWP simulation. The results showed that the RIWP decreased from maize to sunflower to wheat from 2006 to 2013. It was also found that the maximum RIWP was reached when the groundwater table depth was between 2 and 4 m, regardless of the irrigation water depth applied. This implies the importance of groundwater table control on the RIWP. Overall, our distributed RIWP model can effectively simulate the temporal and spatial distribution of the RIWP and provide critical water allocation suggestions for decision-makers.
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