water-energy-food nexus in mekong countries · 2019-08-16 · water-energy-food nexus in mekong...
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Water-Energy-Food Nexus in Mekong Countries
Jiaguo Qi
Center for Global Change, Michigan State UniversityAsia Hub Initiative, Nanjing Agricultural University
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UNECE 2016
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GlObal geOreferenced Database of Dams (GOOD2)Global Reservoir and Dam Database (GRanD)Future Hydropower Reservoirs and Dams (FHReD)
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GlObal geOreferenced Database of Dams (GOOD2)Global Reservoir and Dam Database (GRanD)Future Hydropower Reservoirs and Dams (FHReD)
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GlObal geOreferenced Database of Dams (GOOD2)Global Reservoir and Dam Database (GRanD)Future Hydropower Reservoirs and Dams (FHReD)
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GlObal geOreferenced Database of Dams (GOOD2)Global Reservoir and Dam Database (GRanD)Future Hydropower Reservoirs and Dams (FHReD)
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GlObal geOreferenced Database of Dams (GOOD2)Global Reservoir and Dam Database (GRanD)Future Hydropower Reservoirs and Dams (FHReD)
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The largest Macro River Basins Fed by The Third Pole (MRB-TTP) in Asia
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ASSESSING THE IMPACTS OF DAMS ON THE DYNAMIC INTERACTIONS AMONG DISTANT WETLANDS, LAND USE, RURAL COMMUNITIES IN THE
LOWER MEKONG RIVER BASIN
PI: Jiaguo Qi
US Co investigators:@MSU: Dan Kramer, David Hyndman, Jinhua Zhao, Joseph Messina, Peilei Fan, William McConnell and Yadu Pokhrel;
@AGS: Nathan Torbick and William Salas; @VT: Venkataramana Sridhar
Int’l Partners:Sura Pattanakiat,Mahidol University, Thailand. Apisom Intralawan,Mae Fah Laung University, Thailand. Charlie Navanugraha,Nakhon Phanom
University, Thailand. Le Duc Trung, Vietnam National Mekong Committee, Vietnam, Pham Tuan Phan,Mekong River Commission, Laos. Vu Ngoc Ut,CanTho University, Vietnam. Siam Lawawirojwong,GeoInformatics and Space Technology Development Agency, Thailand. Tep Makathy,Cambodian
Institute for Urban Studies, Cambodia. Zaw Naing, Mandalay Technologies, Myanmar. Aiko Endo, Research Institute for Humanity and Nature, Japan. Anik Bhaduri, Sustainable Water Future Programme, Australia. Thongchai Suwonsichon, Kasetsart University, Thailand.
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• Challenges and Opportunities– Hydropower dams –– Huge impacts on water resources;– Significant implications to water-energy-
food nexus;– Important socioeconomic
consequences;– Very controversial in biological and
ecological impacts;– Number of dams are increasing!
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• LENGTH: 2,700 miles; LONGEST RIVER IN SOUTHEASTASIA, THE 7TH LONGEST IN ASIA, AND THE 12TH LONGESTIN THE WORLD
• HYDROPOWER DAMS:
Selected field study sites: Mae Chan; Pak Munn and Tonle Sap
MEKONG RIVER BASIN FACTS:
Country No. Planned dams No. Proposed dams
Cambodia 12 0
China 11 2
Laos 43 20
Myanmar 7 0
Thailand 7 0
Vietnam 1 1
Totals 74 23
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Pak Mun Dam
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Tradeoffs & Governance• Socio-ecological and socio-economic
analyses of ecosystem services provided by coupled dams, irrigated agriculture, wetlands, and lakes and their trade-offs across space and time
• Basin wide water strategies
Social Impacts and Responses
Ecosystem FunctionsHydroperiod, phenology, thermal regulation
and GHG emissions
Ecosystem ServicesCropping potentials, biomass, NPP,
fisheries and plant biodiversity
Wetland DynamicsWetland types, structure, composition, area expansion / shrinking, and rate of change.
Social Drivers of LCLUCLocal and use attributes and
socioeconomic drivers of land use changes
Societal ResponsesTypology of adaptation and
mitigation
Tipping PointsEcosystem services and human wellbeing across space and time
Synthesis and StrategiesSynthesis scenarios, planning,
adaptation and future development strategies
Drivers
Climate ChangeSpatio-temporal
variability in precipitation & temperature
Land Use/Cover ChangeAgricultural intensification,
irrigation & land use changeFine and large-scale, recent &
historical changes
Hydroelectric Dam Construction
Site characteristics, water storage and regulation of flows
Location and regulationSurrounding LCLUC
Hydrological ProcessesSpatio-temporal changes in river
flow, floodplain inundation dynamics, groundwater, and
reservoir storage
Ecological ProcessesLake phenology, water volume,
quality and fish production, nutrient retention and
greenhouse gas emissions
Demographic DynamicsPopulation size, household structure,
livelihood systemsEcosystem services trade-offs
Social motivation, consequences and adaptation strategies
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DAMS IN THE MEKONGPokhrel et al. (2018) Pokhrel et al. 2012, 2015
Existing dams do not have significant impact on the flow in the mainstream
Impacts on tributaries could be significant Future dams are likely to largely affect the
mainstream flow
BUT…. What about lakes and wetlands?
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From Co-I Nate Torbick
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Water Level estimates from remote sensing
From Co-I Nate Torbick
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Lin & Qi, 2017, ERL, 158: 24-32
Tonle Sap Lake
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ECOLOGICAL IMPLICATIONS
kN/ha kC/ha
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TRADEOFFS AND SYNERGIES
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TRADEOFFS AND SYNERGIESField survey to understand the impacts and responses
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Keys:CS: MRC Council Studies; MDS: Mainstream Hydropower StudiesSEA: Strategic Environmental Assessment;Phase 2 (BDP2 ) – Basin Development Plan Phase 2
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CS MDS SEA BDP2
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CONCLUSIONS
• So far, we have seen a significant impacts of hydro dams on hydrological and ecological processes and ecosystem services
• Tradeoffs are obvious but we need to look at all possible tradeoffs across space and time as well.
• The WEF system in Mekong is complex but the Nexus approach seems to help address these pressing issues,
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Thank You!