- 學位論文
台灣西南沿海停曬鹽田的生態品質評估
The Ecological Quality Assessment of the Unattended Salt Pans in Coastal of Southwestern Taiwan
摘要
自2000年起，台灣西南沿海的嘉義縣布袋鹽田、台南縣北門鹽田及七股鹽田陸續停曬。本研究從2008年7月起至隔年7月止，每2個月於這些停曬鹽田進行一次底棲動物調查，共6次調查，採獲15,033個標本分屬24目40科55種。優勢的科依序分別為狹口螺科（Stenothyridae）有6,405個標本約42.0%、錐蜷科（Thiaridae）有5,538個標本約36.0%、長臂蝦科（Palaemonidae）有843個標本約5.6%、胎鱂科（Poeciliidae）有557個標本3.7%、粗米螺科（Acteocinidae）有311個標本約2.0%等。與曬鹽時期的監測資料比較，顯示棲地是缺乏營養鹽來源且逐年劣化的棲地。除了停止曬鹽的人為操作外，更因防範水災而關閉海水閘門，雨水成為這些鹽田濕地的主要水源；水質除隨著季節性變動外，因水位的變化而更顯劇烈，進而影響水生動物的多樣性。建議經營管理海岸鹽田濕地時能維持大部份的棲地自然感潮，或是季節性的引入海水，使營養鹽可隨著潮汐流入棲地，部分生物也能隨海水流通而能拓殖到這些停曬的鹽田。
並列摘要
From 2000, Budi salt pan of Chiayi County and Peimen salt pan and Chiku salt pan of Tainan County were unattended in coastal of southwestern Taiwan. In this study, we investigated the water quality, aquatic investigation each bimonthly from July 2008 to July 2009, and then to be ecological quality assessment for those salt pans. A total of 15,033 specimens were retrieved. They were categorized into 24 orders, 40 families and 55 species of animals. Advantage for the division were as the following Stenothyridae with 6,405 specimens of approximately 42.0%, Thiaridae with 5,538 specimens of about 36.0%, Palaemonidae with 843 specimens of about 5.6%, Poeciliidae with 557 specimens of about 3.7%, Acteocinidae with 311 specimens of about 2.0%, respectively. And salt production of the monitoring data to compare. Studies show that sources lack of nutrients and degradation of habitats each year. Therefore, the stop of the operation, closing the sea water strobe for preventing floods striking, the rain water becomes the main water resources in the wetland. There will be the fierce change of the water quality along with the season, affecting a diversity of the Aquatic thing. We proposed a management when coastal salt marsh to maintain the natural tidal energy or seasonal introduction of water, so nutrients could be brought by the tidal and some aquatic species would be colonized to those habitats.