竹溪二期｜榮獲2024台灣河川希望工程獎 優質獎
計畫說明 Project Statement
竹溪整治計畫作為臺南快速都市發展下的重要「藍綠基盤」補償工程，透過收回遭非法占用土地、重建水域與森林交織共生的自然關係，守護這座「水泥城市中的最後森林」。
本計畫以「低擾動介入」與「生態自淨」為核心設計理念，成功將原本污染嚴重的都市排水渠道，轉化為兼具都市防洪安全與生物多樣性的生態廊道，重新建立城市與自然之間的永續平衡。
The Zhuxi River restoration project serves as a vital “blue-green” compensation for the pressures of rapid urban expansion in Tainan.y reclaiming illegally occupied lands and restoring the interwoven relationship between water and forest, the project protects the “last forest in the concrete city”.
Through a design philosophy that prioritises minimal disturbance and ecological self-purification, the project has successfully transitioned a once-polluted drainage channel into a flourishing ecological corridor that balances urban flood safety with biodiversity.
竹溪二期整治所面臨的治理挑戰 The Challenges of Governance in the Second Phase of Zhuxi
竹溪二期工程所面臨的是，如何在敏感的原生森林環境中整合防洪的需求。相較於一期工程可利用較寬闊的運動場腹地進行河道拓寬，二期基地多數區段僅有9至20公尺寬，且保留大量生長完整、密度極高的既有原始林相，使傳統大規模工程施工方法在不破壞自然景觀的前提下幾乎無法執行。
此外，基地同時存在河岸土壤淘刷、邊坡陡峭不易維護，以及國有土地遭非法棄置廢棄物等問題，不僅降低河道通洪能力，也對整體生態環境造成長期衝擊。
The second phase of the Zhuxi project faced the complex task of integrating flood control within a sensitive old-growth forest. Unlike the first phase, where wider sports grounds allowed for river widening, the narrow forest sections (measuring only 9–20 metres wide) contained dense, well-preserved vegetation that made traditional engineering unfeasible without destroying the natural landscape. Furthermore, the area suffered from soil bank erosion, steep slopes that hindered maintenance, and significant illegal waste dumping on state-owned land, all of which compromised the river’s flow capacity and ecological health.
從對話開始：整合多方力量，共同推動竹溪改善 Starting with Dialogue: Integrating the Strengths of All Parties to Promote the Improvement of Zhuxi
為化解工程需求與環境保育之間的衝突，我們主動與NGO團體及地方社群展開深度溝通及交流，並與台灣濕地保護聯盟及台南社區大學合作，進行超過20場現地踏查與技術討論，建立公開透明的溝通機制。
規劃資訊公開透明
透過專案網站及社群媒體平台，即時公開工程進度、會議紀錄及生態監測成果，提升公眾參與及資訊透明度。
公民參與
藉由社區論壇及「手作步道」工作坊，引導居民實際參與森林環境修復，建立地方認同與共同維護意識。
To resolve the conflict between engineering needs and conservation, the project team initiated a deep dialogue with NGO groups and local communities. Collaborations with the Taiwan Wetland Protection Alliance and Tainan Community University led to over 20 on-site surveys and technical discussions. This transparent process included:
Public Transparency: Dedicated project websites and social media platforms were used to share execution results, meeting records, and ecological check data.
Citizen Participation: Community forums and “hand-made trail” workshops allowed residents to actively participate in the forest’s restoration.
High-Level Consensus: National and municipal leaders conducted site visits to ensure that a consensus was reached on a “minimal impact” engineering plan that prioritized the existing forest phase.
建立城市防洪的藍綠基盤 Building a Blue-Green Base for Flood Control in Cities
本計畫將設計策略由傳統工程，轉向以自然為本的解方
透過收回原作為混凝土拖車停車場之基地空間，打造「月見湖滯洪濕地（Lunar Sol Detention Wetland）」，作為竹溪流域分散式滯洪調節系統的重要節點。
動態水位調節
導入電動水閘門及充氣壩系統，依據季節變化與降雨預報進行水位管理，在枯水期仍可維持濕地生態所需水量。
佔用空間回收
透過收回非法占用的閒置土地，取得必要滯洪空間，避免以拓寬河道方式破壞既有老樹林地。
自然式護岸
採用生態工法及近自然護岸方式修復沖蝕河岸，降低淤積問題，同時保留原有自然景觀風貌。
The design strategy shifted from rigid infrastructure to Nature-Based Solutions (NbS). By reclaiming a former concrete trailer parking lot, the team created the “Lunar sol” detention wetland, which serves as a distributed flood-buffering zone for the basin. Key flood management features include:
Dynamic Regulation: The use of electric gates and inflatable dams to manage water levels based on seasonal needs and rainfall forecasts, ensuring the wetland meets ecological needs during dry periods.
Space Reclamation: Reclaiming illegally occupied idle land provided the necessary detention space to improve flood safety without widening the river through the old-growth forest.
Natural Reinforcement: Eroded embankments were reinforced using natural methods and revetments to prevent further siltation while maintaining the natural aesthetic.
竹溪水質改善行動 Zhuxi Water Quality Improvement Campaign
水質改善是竹溪生態復育的重要核心。在大型二期水淨場尚未完成前，計畫即率先導入「自然淨化循環系統」。
系統透過淨化沉砂池、跌水曝氣設施及近自然水渠道等方式，逐步過濾都市逕流污染源，有效提升水體品質。
成效驗證: 根據專業檢測結果顯示，河川污染指數（RPI）已由「中度污染」改善至「未污染／輕度污染」等級。
生態回復: 隨著水質改善，基地逐漸成為原生魚類的重要繁殖棲地，同時吸引紅冠水雞、翠鳥等鳥類進駐築巢，展現生態系統恢復成果。
Improving water quality was central to restoring the river’s life. Even before the completion of the large-scale Phase 2 purification plant, the project implemented a “Natural Purification Loop.” This system uses purification desilting ponds, cascading aeration, and near-natural water channels to filter urban runoff.
Documented Success: Professional testing confirmed that the River Pollution Index (RPI) improved from “moderately polluted” to “unpolluted/slightly polluted.”
Biodiversity Gains: The improved water quality has allowed the ponds to become breeding bases for native fish and nesting sites for birds such as the Common Moorhen and Kingfisher.
改善後的竹溪：重新定義城市與自然的關係 Rethinking Zhuxi after its Improvement
整治完成後的竹溪，不僅是一座城市公園，更成為融合生態、防洪、教育與公共生活的多功能生態場域。
空間功能升級: 原本閒置且被忽視的空間，轉化為環境教育場域與適合家庭使用的安全休憩空間。
串聯都市生活: 交通系統重新整合，將原危險的Y字型路口改善為安全舒適的T字型路口，並導入綠能設施與智慧監測系統，提升整體公共服務品質。
長期環境治理: 計畫持續進行生態監測與環境管理，確保竹溪作為城市「藍綠基盤」的功能得以長期延續，並持續服務臺南市民與原生野生動物世代共存。
The post-improvement Zhuxi is more than just a park; it is a multi-functional ecological laboratory. The project has successfully delivered:
Upgraded Functionality: Once-neglected idle spaces have been transformed into ecological education areas and safe recreational spots for families.
Connected Urban Life: Traffic flow was reorganized from dangerous Y-junctions into safer, more comfortable T-junctions, with green energy facilities and smart monitoring integrated into the site’s amenities.
Long-term Stewardship: The project remains under continuous ecological monitoring to track recovery and ensure that the “blue-green base” continues to serve both Tainan’s citizens and its native wildlife for generations to come.
