Your search found 10 records
1 Wassmann, R.; Hien, N. X.; Hoanh, Chu Thai; Tuong, T. P. 2004. Sea level rise affecting the Vietnamese Mekong Delta: water elevation in the flood season and implications for rice production. Climatic Change, 66:89-107.
River basins ; Hydrology ; Models ; Rice ; Crop production ; Climate change ; Flood water ; Sea level ; Deltas / Vietnam / Mekong Delta
(Location: IWMI-HQ Call no: IWMI 333.91 G784 WAS Record No: H035796)
2 Hoanh, Chu Thai; Phong, N. D.; Gowing, J. W.; Tuong, T. P.; Ngoc, N. V.; Hien, N. X.. 2005. Hydraulic and water quality modeling: a tool for managing land use conflicts in inland coastal zones. Draft of paper presented at the International Conference on Environment and Livelihoods in Coastal Zones: Managing Agriculture-Fishery-Aquaculture Conflicts, Bac Lieu, Vietnam, 1-3 March 2005. 19p. [doi: https://doi.org/10.2166/wp.2009.107]
Water management ; Water quality ; Hydraulics ; Salinity ; Models ; Coastal plains ; Salt water intrusion ; Land use ; Conflict ; Case studies / Vietnam / Mekong Delta / Quan Lo Phung Hiep Region / Bac Lieu Province
(Location: IWMI-HQ Call no: IWMI 333.91 G784 HOA Record No: H038163)
3 Fanslow, G.; Tuong, T. P.; Hoanh, Chu Thai; Phong, N. D.; An, L. T.; Hien, N. X.. 2005. Land-use and salinity management effects on water quality in Ca Mau Peninsula, Vietnam. Paper presented at the International Conference on Environment and Livelihoods in Coastal Zones: Managing Agriculture-Fishery-Aquaculture Conflicts, Bac Lieu, Vietnam, 1-3 March 2005. Draft – not to be cited. 31p.
Land use ; Salinity control ; Water quality ; Models / Vietnam / Ca Mau Peninsula / Mekong River Delta
(Location: IWMI-HQ Call no: IWMI 333.91 G784 FAN Record No: H038166)
4 Hoanh, Chu Thai; Phong, N. D.; Gowing, J. W.; Tuong, T. P.; Hien, N. X.; Dat, N. D. 2006. Predicting impacts of water management in coastal zones by hydraulic and salinity modeling. In Voinov, A.; Jakeman, A.; Rizzoli, A. (Eds). Proceedings of the iEMSs Third Biennial Meeting: "Summit on Environmental Modelling and Software." International Environmental Modelling and Software Society, Burlington, USA, July 2006. 6p.
Water management ; Coastal area ; Land use ; Conflict ; Water quality ; Salt water intrusion ; Simulation models / Vietnam / Ca Mau Peninsula / Mekong Delta
(Location: IWMI-HQ Call no: IWMI 333.91 G784 HOA Record No: H039625)
5 Hoanh, Chu Thai; Phong, N. D.; Gowing, J. W.; Tuong, T. P.; Ngoc, N. V.; Hien, N. X.. 2009. Hydraulic and water quality modeling: a tool for managing land use conflicts in inland coastal zones. Water Policy, 11(Supplement 1):106-120. [doi: http://dx.doi.org/10.2166/wp.2009.107]
Water quality ; Salt water intrusion ; Models ; Canals ; Land use ; Water management ; Rivers ; Investment planning ; Case studies ; Conflict ; Rice ; Aquaculture ; Brackish water / Vietnam / Mekong Delta / Ca Mau peninsula / Quan Lo Phung Hiep region / MyThanh River / Ganh Hao River / Cai Lon River / Ong Doc River
(Location: IWMI HQ Call no: e-copy only Record No: H042169)
Tidal effect and salinity intrusion are two defining characteristics of inland coastal zones, causing, respectively, complex variations in water levels and flows in river and canal networks, and serious problems for agriculture and freshwater fishery, but bringing significant benefits for brackish water aquaculture. To evaluate these conflicts and synergies in the development of agriculture, fishery and aquaculture, this paper adopts a hydraulic and salinity modeling approach that simulates the tidal propagation and salinity intrusion, and evaluates the effects of water and land use management on these hydrology- and salinity-related phenomena in coastal zones. The paper presents the empirical results from the application of a hydraulic and salinity model specifically developed for the context of the Ca Mau peninsula, Mekong Delta, Vietnam, and also demonstrates how such a modeling approach can provide valuable policy-relevant information at different phases for water resource planning, development, operation, and management in hydrologically and environmentally sensitive coastal regions.
6 Hoanh, Chu Thai; Phong, N. D.; Trung, N. H.; Dung, L. C.; Hien, N. X.; Ngoc, N. V.; Tuong, T. P. 2012. Modelling to support land and water management: experiences from the Mekong River Delta, Vietnam. Water International, 37(4):408-426. (Special issue on "How hydrological models support informed decision making in developing countries" with contributions by IWMI authors). [doi: https://doi.org/10.1080/02508060.2012.706797]
Water management ; Water use ; Land management ; Land use ; Rivers ; Deltas ; Simulation models ; Optimization ; Policy making ; Hydrodynamics ; Water quality ; Canals ; Flood control ; Salinity control ; Aquaculture / Vietnam / Mekong River Delta
(Location: IWMI HQ Call no: PER Record No: H045027)
(3.15 MB)
By comparing the successful story of a hydrodynamic model (based on its contribution to policy changes, management options and livelihood improvement) with other modelling cases in the Mekong River Delta, five success factors are identified. These are (1) simulated phenomena relevant to and understandable by policy makers; (2) response to the needs of policy setting; (3) developed and handled by national modellers with direct links to the policy process; (4) availability of input data; and (5) long application history. These success factors provide higher opportunities for engaging modelling activities with policy setting.
7 Phong, N.; Ngoc, N. V.; Tho, T. Q.; Dong, T. D.; Tuong, T. P.; Hoanh, Chu Thai; Hien, N. X.; Khoi, N. H. 2013. Impact of sea level rise on submergence, salinity and agricultural production in a coastal province of the Mekong River Delta, Vietnam [Abstract only]. In German Aerospace Center (DLR); Germany. Federal Ministry of Education and Research (BMBF). Mekong Environmental Symposium, Ho Chi Minh City, Vietnam, 5-7 March 2013. Abstract volume, Topic 09 - Mekong Delta: climate change related challenges. Wessling, Germany: German Aerospace Center (DLR); Bonn, Germany: Federal Ministry of Education and Research (BMBF). 1p.
Water management ; Sea level ; Salinity ; Submergence ; Agricultural production ; Coastal area ; Rivers ; Deltas / Vietnam / Mekong River Delta
(Location: IWMI HQ Call no: e-copy only Record No: H045825)
http://www.mekong-environmental-symposium-2013.org/frontend/file.php?id=3020&dl=1
https://vlibrary.iwmi.org/pdf/H045825.pdf
https://vlibrary.iwmi.org/pdf/H045825.pdf
(0.08 MB) (2.09MB)
8 Kam, S. P.; Nhuong, T.; Hoanh, Chu Thai; Hien, N. X.. 2015. Aquaculture adaptation to climate change in Vietnam’s Mekong Delta. In Hoanh, Chu Thai; Johnston, Robyn; Smakhtin, Vladimir. Climate change and agricultural water management in developing countries. Wallingford, UK: CABI. pp.135-153. (CABI Climate Change Series 8)
Climate change ; Adaptation ; Aquaculture ; Shrimp culture ; Farmers ; Flooding ; Ponds ; Economic analysis ; Costs ; Deltas ; Water resources ; Water management ; Seasonal cropping / Vietnam / Mekong Delta
(Location: IWMI HQ Call no: IWMI Record No: H047376)
(3.84 MB)
9 Phong, N. D.; Hoanh, Chu Thai; Tho, T. Q.; van Ngoc, N.; Dong, T. D.; Tuong, T. P.; Khoi, N. H.; Hien, N. X.; Nam, N. T. 2015. Water management for agricultural production in a coastal province of the Mekong River Delta under sea-level rise. In Hoanh, Chu Thai; Johnston, Robyn; Smakhtin, Vladimir. Climate change and agricultural water management in developing countries. Wallingford, UK: CABI. pp.120-134. (CABI Climate Change Series 8)
Water management ; Agricultural production ; Coastal area ; Deltas ; Salinity ; Sea level ; Salt water intrusion ; Climate change ; Water levels ; Flow discharge ; Aquaculture ; Agriculture ; Flooding / Vietnam / Bac Lieu Province / Mekong River Delta
(Location: IWMI HQ Call no: IWMI Record No: H047375)
(2.46 MB)
10 Wassmann, R.; Phong, N. D.; Tho, T. Q; Hoanh, C. H.; Khoi, N. H.; Hien, N. X.; Vo, T. B. T.; Tuong, T. P. 2019. High-resolution mapping of flood and salinity risks for rice production in the Vietnamese Mekong Delta. Field Crops Research, 236: 111-120. [doi: https://doi.org/10.1016/j.fcr.2019.03.007]
Floodplains ; Salinity ; Agricultural production ; Paddy fields ; Rice ; Mapping ; Deltas ; Seasonal cropping ; Climate change ; Hydrological factors ; Risk analysis / Vietnam / Mekong Delta
(Location: IWMI HQ Call no: e-copy only Record No: H049182)
(3.98 MB)
The rationale for mapping hydrological risks in the Mekong River Delta (MRD) is the large extent of flood-affected and salinity-affected areas that severely constrain rice production. This new study on risk mapping expands previous approaches in depth (resolutions of 300 × 300 m and 1 h) and width (combining different types of maps). Data obtained with a hydrological model have been evaluated through four different methods of mapping individual attributes of risks that collectively comprise a comprehensive risk assessment for rice production: 1) Peak risk maps: These maps show the maximum water heights in a high-water year and maximum salinity concentrations in a low-water year. 2) Time-sequenced risk maps: The article provides hyperlinks to videos that encompass time-sequenced maps for the critical periods of floods (July-December in daily intervals) and salinity (March-April in hourly intervals) for all provinces. 3) Sustained risk maps (for rice): This approach is based on clearly defined thresholds of flood and salinity risks considering the duration of risk exposure at a given location. We have set thresholds for water heights exceeding 0.4 m and salinity concentrations above 2 g/l for 7 consecutive days to define start and end dates of sustained risks for rice. 4) Risk profile maps (for rice): The data on sustained risk have been aggregated at province level to calculate the geographic coverage of risk areas as compared with the total rice area. The rice area exposed to sustained flood risks in the MRD comprises 39% of the total rice area, which can be further subdivided into 24% with long (>three months), 12% with moderate (1–3 months), and 3% with short (1–4 weeks) risk duration. Likewise, the salinity-prone rice area accounts for 44% of the total rice area and can be subdivided into 31% with long, 8% with medium, and 5% with short risk duration. Finally, we have discussed the pros and cons of these different risk mapping methods in view of required adaptation strategies for rice production to cope with rapidly changing environmental conditions.
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