HYDROLOGICAL REGIME OPTIMIZATION MODEL FOR SUSTAINABLE MANAGEMENT OF LAKE: CASE STUDY OF TASU LAKE

Siltumens, K.; Grinfelde, I.; Pilecka-Ulcugaceva, J.; Vebere, L. L.; Bakute, A.
Abstract:
The increasing world population demand for bioeconomy products intensify the nitrogen cycle and encourage eutrophication in water bodies. Global climate change and land use transformation have a significant impact on the hydrological cycle. Integrated water management in the catchment area is a sustainable solution for catchment area development and balancing economic and environmental interests. The aim of this study is to develop an optimization model for sustainable lake management. The case study is done in eutrophic Tasu lake, located in the Southwest part of Latvia and is a part of the Alande river catchments basin. The optimization model for sustainable lake management was made in four steps. Firstly the lake bead was scanned by hydroacoustic stream meter RiverRay and data processed using WinRiver II data-processing software. Secondly, the verified data were used to develop a three-dimensional model of Tasu Lake. Thirdly, twelve climate scenarios and two land use transformation scenarios were used to model daily runoff for the period 1990-2099 using the conceptual hydrological model METQ. Finally, the three-dimensional model and modelled runoff data were used to optimize Tasu lake hydraulic parameters and develop optimal parameters for segmentation basin and constructed wetland. The results show the complexity and sensitivity of the lake hydraulic system and highlight the need for integrated catchment area management to balance economic and environmental interests.
SGEM Research areas:
Year:
2021
Type of Publication:
In Proceedings
Keywords:
Integrated water management; hydrological regime; optimization model; sustainable nitrogen management
Editor:
• Prof. DSc. Oleksandr Trofymchuk, UKRAINE • Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Volume:
21
SGEM Book title:
21st International Multidisciplinary Scientific GeoConference SGEM 2021
Book number:
3.1
SGEM Series:
SGEM International Multidisciplinary Scientific GeoConference
Pages:
123-130
Publisher address:
51 Al. Malinov blvd, Sofia, 1712, Bulgaria
SGEM supporters:
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
Period:
16 - 22 August, 2021
ISBN:
978-619-7603-24-8
ISSN:
1314-2704
Conference:
21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
DOI:
10.5593/sgem2021/3.1/s12.17
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