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Study on the Method of Quantitative Analysis for Water Biological Service Functions in Polder Area

Author: LiFeiFei
Tutor: ChenPing
School: Yangzhou University
Course: Agricultural Soil and Water Engineering
Keywords: Water Ecological service function The water rate Polder Quantitative Analysis
CLC: Q178
Type: Master's thesis
Year: 2008
Downloads: 171
Quote: 1
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Abstract


Polder area fertile soil of southern China, the water network, rich in resources. Dike within the water body as a special ecological resources, support and maintain the district run development of various ecosystems, not only provide the basic resources for human life and production activities, also has to maintain the natural ecosystem structure and ecological processes function of the regional ecological environment. However, in the past few years, due to declining water area of ??the impact of human activities, Plain Polder, the decline in the ecological function of the body of water, resulting in the deterioration of the regional ecological environment. Focus on sustainable development, people gradually realized the importance of ecological service function to the body of water; science and technology can affect the ecological service functions of the water body, but not a substitute for a natural water body ecological service functions. Therefore, quantitative analysis of the ecological service function of the water, which is more scientific and reasonable assessment of the the ecological value quantity of water is necessary for the promotion of sustainable economic and social development, and sustainable use of water resources of the area also has an important significance. In this paper, based on the ecological service function theory, from the perspective of the hydrology, ecology, environmental studies, water supply, flood control, hysteresis floods, regulating climate, cleaning up the environment, material production, maintaining biodiversity seven aspects of ecological functions of water analysis, the functional relationship between the amount of each function and the water rate, Plain Polder the calculated quantitative analysis of the ecological functions of water model, and polder Lixiahe as research background, through the different stages of The difference in the amount of water ecosystem services of the surface of the water rate function comparative analysis, quantitative calculation model parameter calibration correction, provide the basis for the Plain Polder water ecosystem services of quantitative analysis. Ecological service function of the body of water quantitative analysis method of the polder water body in Lixiahe ecological service function of the amount of assessment; alternative engineering method or marginal cost method to calculate the magnitude of value based on selection for the seven major ecological service functions. to arrive at the direct economic value of the Lixiahe water ecological service functions and indirect economic value completed by the determination of the \ecological function of the economic value of water to reflect its importance.

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