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標題: 人工濕地生態系統功能與經濟效益評估-人工濕地生態系統結構、功能與溫室氣體通量(I)
Ecosystem Structure, Functioning and Greenhouse Gas Flux of Constructed Wetlands (I)
作者: 林幸助
關鍵字: 應用研究;Food web;生物科學類;食物網;生態系統代謝;硝化作用;脫硝作用;CO2通量;CH4通量;Ecosystem metabolism;Nitrification;Denitrification;CO2 flux;CH4 flux

How biodiversity influences ecosystem functioning is the focus of recent research. Constructed wetlands or treatment wetlands are widely distributed in Taiwan. Because of the high biodiversity and nutrient inputs, the treatment effects of wastewater are often significant by a variety of ecosystem processes. However, the relationship between biodiversity and ecosystem functioning is still unclear. This project is one of an integrated project for constructed wetlands to construct trophic models for exploring the mechanism of removing pollution, quantifying the biodiversity and ecosystem functioning, and determining whether constructed wetlands is the source or sink for greenhouse gases (CO2及CH4). Our study sites will be located in three surface-flow wetlands with four treatment units in Taipei County which are completed in different times and subjected to different levels of management, including Hsinhei I and II and Fujeo. Two other types of treatment wetlands in Taipei City will be studied for comparisons, including a gravel- packed reactor located in Neihui and subsurface flow wetlands in Guandu. In the first year (2008~2009), we propose to quantify the spatial differences in biodiversity and ecosystem processes of the constructed wetlands at 5 study sites by assembling biological data from other subprojects and in situ determining the primary productivity, respiration, nitrification, and denitrification rates, and the fluxes of CO2及CH4 of the wetlands; in the second year (2009~2010), we will continue to assemble data of biotic communities and to measure the ecosystem processes in the field to determine the seasonal patterns; in the third year (2010~2011), we will quantify the biodiversity, ecosystem functioning, and maturity by constructing trophic models and carbon and nitrogen budget models at the five study sites. In the future, we will try to apply the ecological database and resulted ecosystem indices to other constructed wetlands and provide a guideline of the cost-benefit analyses and a reference for policy makers.
其他識別: NSC97-2621-M005-005
Appears in Collections:生命科學系所

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