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| Titel |
Management approach of Keibul Lamjao National Park in Loktak Lake, Manipur using water balance analysis |
| VerfasserIn |
Eliza Khwairakpam, Rakesh Khosa, Ashvani Gosain, Arvind Nema |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250137595
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| Publikation (Nr.) |
 EGU/EGU2017-359.pdf |
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| Zusammenfassung |
| Keibul Lamjao National Park (KLNP) is situated in Loktak Lake which is a Ramsar
designated and Montreaux record listed wetland. KLNP, the only floating national park in the
world, is the only natural home of Manipur’s brow-antlered deer popularly known as Sangai.
Naturally, this natural park has ecological phenomenon of sinking during dry season and
staying afloat during rainy season. The primary objective of this study is to formulate
management approach for the conservation of KLNP by developing water balance models
and correlating to the ecological processes of KLNP. Lake water balance models
for two scenarios, Pre and Post Ithai barrage construction have been developed
considering various parameters such as direct precipitation, runoff from the sub-basins,
evaporation from the open water surface, evapotranspiration from Phumdis and domestic
consumption. Hydropower generation, irrigation purposes and releases through the
Ithai Barrage are also considered in Post Ithai barrage scenario. Run-off from each
sub-basins have been simulated from hydrological-hydraulic models developed using
Coupled MIKE SHE, MIKE 11 and SWAT. SWAT is used to model hilly terrain
region of each hydrological-hydraulic models and runoff obtain from SWAT have
been integrated as input data in MIKE SHE-MIKE11 models. Models have been
calibrated and validated using observed runoff for hydrological-hydraulic models
and observed lake water level for water balance models. The performance of each
hydrological-hydrodynamic and water balance models have been assessed using
Nash-Sutcliffe coefficient (E) and Coefficient of determination (R2) and the overall
efficiency is found to be greater than 0.80. The obtained results have been investigated
for causal correlation with the deteriorating ecological condition of the national
park to formulate management approach. Results demonstrate the requirement to
consider ecology of KLNP while developing wetland water-level management plans. |
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