Evaluation of ecological service benefits of the plain reservoirs along the Eastern Route of the South-to-North Water Transfers Project: A case study of Datun Reservoir
- Article
- Figures
- Metrics
- Preview PDF
- Reference
- Related
- Cited by
- Materials
Abstract:
The plain reservoir is an important part of the Eastern Route of the South-to-North Water Transfers Project, supplying water resources for residents, industrial production, and agricultural irrigation, and also providing ecological water replenishment for natural water systems such as mudflats, wetlands, and rivers. Evaluating the ecological service benefits of plain reservoirs will not only help management organizations fully understand the reservoirs' operational status but also guide them in improving the ecological functions, thus promoting human well-being in the service areas. To construct an ecological benefit assessment framework consistent with the engineering characteristics, various calculation methods were synthesized to study the ecological functions and comprehensive benefits of plain reservoirs.The ecological service functions of the plain reservoir were sorted out based on the ecosystem services theory. The accounting standards of ecological service functions' value were determined by various methods such as shadow engineering, market value, willingness-to-pay and so on. To further explore the comprehensive benefits provided by plain reservoirs, the interactive relationship between the service functions of the plain reservoir and the ecological and socio-economic systems of the service areas was analyzed. Using rough set theory and hierarchical analysis as weight determination methods, an assessment model was further built. The Datun Reservoir in Dezhou, Shandong Province was taken as a practical case to carry out the applied research.It was found that: The overall service value of Datun Reservoir shows a general upward trend between 2015 and 2021, peaking in 2018, and the total service value reached 236.493 million yuan in 2021. The value of regulating, supplying, supporting, and cultural services has the largest share of supplying services and fluctuates the most due to its relation to water allocation, reaching 117.654 million yuan in 2021, up 88.363 million yuan compared to 29.291 million yuan in 2015. The smallest cultural services value was 21.003 million yuan in 2021. The comprehensive benefits brought by Datun Reservoir to the human well-being in the service area mainly dominated by ecological and economic benefits. The total benefits in 2015 and 2021 were 44.476 and 85.618 million yuan, respectively. The proportion of economic, ecological, and social benefits, showed a stabilizing trend, gradually remaining at 50%, 41%, and 9%.An accounting standard was proposed for the ecological service value of plain reservoirs and ideas were provided for further assessing the comprehensive benefits of human well-being brought by reservoirs to the region, which not only helps to intuitively reflect the operational status of plain reservoirs but also has practical significance in promoting the realization of the functional value and scientific management.
Keywords:
Project Supported:
Clc Number:
Mobile website
® 2024 All Rights Reserved
冀公网安备13010502002656号
冀公网安备13010502002656号