碩士 / 國立臺灣大學 / 環境工程學研究所 / 94 / Hsin shan reservoir is located in Keelung, Taiwan. By sampling during last year, we collected the water quality data of this reservoir, including algae phase and nutrient such as ammonia nitrogen, nitrate and phosphate. These data were used in developing an algae dynamic model which is zero dimension. From surface to ten meters down to the water, we divided three levels to simulate the growth situation of different kinds of algae. The measured data showed that there was a phenomenon about algae succession happened in this reservoir. The physical characteristics of different kind algae and the environmental condition controlled which kind of algae would be the widely distributed species. Take Hsin Shan reservoir for example, Cyanophyta had a wide distribution in summer, but in fall, Bacillariophyta and Chrysophyta replaced it.
After calculating all parameters of this model, other data were needed to verify the model. This model can also be used for environmental management, and to predict when bloom will happen in reservoirs.
Eutrophication is a serious problem in reservoirs, and Hsin shan reservoir was examined beyond standard in 2003 with Carlson Index. In order to correct this, we established a pilot in this reservoir. In the pilot, mixing was thought to destratify the stable condition of water. In the end of the experiment, the goal species, Microcystis, didn’t leave the water body. The possible reason was that the environment below the surface water was also suitable for it, and there might be enough light and nutrient for its growth. More powerful mixing or other artificial methods are needed to alleviate the bloom happened in Hsin shan reservoir.
| Identifer | oai:union.ndltd.org:TW/094NTU05515014 |
| Date | January 2006 |
| Creators | Chia-Chen Hsu, 許嘉珍 |
| Contributors | 吳先琪 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 139 |
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