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水庫集水區生態調查評估準則建立與運用研究【11007】

中文摘要:

        本計畫針對石門水庫集水區水域環境生態品質進行調查監測工作,選擇白石溪、卡拉溪、霞雲溪及義興電廠共計12個樣站,自99年5月開始至100年12月,進行兩年枯水期及豐水期各2季次,進行水域棲地調查及生物調查。本年度共計錄到魚類4目6科12種,水生昆蟲8目30科43種,底棲動物2目4科4種,附著藻類16屬89種,水生植物30科53種。與前期計畫調查成果比較,水質因子以濁度、懸浮固體物受工程影響最大,魚類及水生昆蟲可為指標生物。並運用9個棲地評估指標進行生態品質評估,以RBPIII水生昆蟲指標、CQHEI棲地指標及RBP野溪棲地評估指標敏感度高。本年度調查顯示大部分樣站棲地環境已趨向穩定。另整合2年計畫成果,依據河溪棲地評估指標之操作經驗,具有實務操作性與便利性,其結果可回饋後續工程改善之依據。
        本計畫延續第1年成果,選取石門水庫3件、曾文水庫2件、南化水庫1件保育治理工程,進行評估準則之運用,另外配合水庫集水區管理單位之座談會(100年6月7日)、專家學者座談會(100年10月7日)以及教育訓練活動(分別於100年10月13日及100年11月14日),累積各界相關意見以修正準則內容,同時也達到各單位對於評估準則運用之困難分享與經驗交流。而對於準則運用於其他工程,也針對面臨的課題進行說明,包含可參照目前準則對於程序性的考量,以及棲地環境較多人為干擾及污染的課題等等。
綜合而言,水庫集水區生態調查評估準則目前已於曾文水庫及南化水庫進行試辦,建議於101年度擴大準則推動運用範圍,並以位於生態敏感性較高或可能有潛在生態議題者優先辦理。若為緊急搶修或救災等具有時效課題的工程則先行排除。

關鍵字:水庫集水區、水庫集水區生態調查評估準則、民眾參與、資訊公開、生態檢核表、生態關注區域圖、河溪棲地評估指標、坡地棲地評估指標

英文摘要:

    The first part of the 2nd year project was to investigate and to monitor the quality of the aquatic quality and ecology of Shihmen Reservoir watershed. A total of 12 sample sites from the upper, middle and lower reaches of Baishi Stream, Kala Stream, Xiayun Stream, and Yixing Power Plant were selected for monitoring, and aquatic habitats and biological features were collected during May 2010 and December 2011 (twice in both the dry and wet seasons). We recorded 12 species of fish from 4 orders and 6 families, 43 species of aquatic insects from 8 orders and 30 families, 4 species of benthic organisms from 2 orders and 4 families, 89 species of attached algae from 16 genera and, and 53 species of aquatic plants from 30 orders. In comparison with the 1st year monitoring results, turbidity and suspended solids were the two water quality factors most influenced by construction. Fish and aquatic insects were used as indicator organisms, and nine habitat assessment indicators were chosen to assess ecological quality. The result suggested that the ecological status were stabilizing, and that the Rapid Bioassessment Protocol III (RBPIII) aquatic insect index, the Citizen’s Qualitative Habitat Evaluation Index (CQHEI), and the Rapid Bioassessment Protocol (RBP) stream habitat assessment index were most sensitive to constructions. In addition, the operational experiences during the two year project have shown that the current methods in evaluating aquatic habitat were practical and adaptable. The results can also feedback to improve later engineering work.
    The second part of the project was to modify the “Ecological Survey & Assessment Specification on the catchment area of Reservoir” handbook drafted by the Water Resources Agency. By demonstrating 6 trial cases in Shihmen, Tseng Wen and Nanhua Reservoir, several modifications of procedures have been made for broader applications. The revised handbook is presented in this report which is applicable to any reservoir catchment in Taiwan and should be applied wherever constructions and management may impact the natural habitats, especially where ecologically sensitive areas may be affected.

Keywords: The conservation and management project, the ecological assessment of the construction, applied ecology


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