臺灣現階段面對傳統海洋保護區(Marine Protected Area， MPA)的空間擴張瓶頸。有別於MPA以限制性管理為主的手段，其他有效保育措施之區域(Other Effective Area-based Conservation Measures， OECM)強調結果導向，重視一個區域在實際管理下能否長期產生就地生物多樣性保育成效，不以設立目的作為唯一判斷標準。因此，OECM的認定與後續評估難以僅依賴行政邊界、海域使用分區或單一開發計畫之說明，需納入可觀測、可追蹤、可更新的科學資料作為治理依據。臺灣周邊海域已累積長期且持續性的多源觀測資料，惟這些資料多為單一目的所蒐集，彼此分散，能否轉化為支持治理判斷之依據，目前少有系統性的整理。本研究以桃園觀塘第三座液化天然氣接收站(以下稱三接)海域為實證案例，檢視既有多源海洋觀測資料能否分別支持人為壓力、生態狀態與物理背景三類治理判斷。 在人為壓力方面，本研究以船舶自動辨識系統(Automatic Identification System， AIS)資料辨識環臺海域之低人為干擾區，於三接海域劃出約0.79 km²之低干擾範圍，可作為海洋OECM邊界劃定之參考，惟此類資料僅能反映人為活動之空間分布，尚不足以單獨作為海洋OECM認定之充分條件。在生態狀態方面，本研究整合既有環評生態化學資料與哥白尼(CMEMS)長期再分析流場，檢視物理、化學與生物因子間之關聯是否符合沿岸生態系統之運作邏輯；分析結果與文獻所述生態機制方向大致一致，顯示這類環評資料具有作為生態基線與治理追蹤之潛力。此外，本研究另以高頻雷達觀測三接海域之局部流場並估算水體滯留時間；高頻雷達具動態、即時之觀測特性，可補足傳統靜態海域資料之不足，惟現階段觀測時間尚短，未納入長期生態關聯分析，仍具備未來強化動態監測之潛力。 上述三類分析分別對應人為壓力、生態狀態與物理背景，各自僅能回應治理判斷之一個面向，需相互對應、彼此補強，方能組成一套初步、可追蹤、可更新的治理判斷依據。本研究核心目的在於評估既有海洋觀測資料能否支援治理判斷，為臺灣海洋資料治理應用提供實證基礎。此一做法初步應用於桃園三接海域，未來仍需更長期、更密集之監測進一步驗證，並可為臺灣推動海洋空間規劃(Marine Spatial Planning， MSP)及海洋OECM劃設，提供資料整合之參考方向。;Taiwan currently faces constraints in expanding conventional Marine Protected Areas (MPAs). Unlike MPAs， which primarily rely on restrictive management measures， Other Effective Area-based Conservation Measures (OECM) adopt a results-based approach that emphasizes whether an area can achieve long-term in situ biodiversity conservation outcomes through effective management， rather than relying solely on its original designation purpose. Consequently， the identification and subsequent evaluation of OECM cannot depend exclusively on administrative boundaries， marine spatial zoning， or individual development plans， but require observable， trackable， and updatable scientific information to support governance decisions. Although long-term and continuous multi-source marine observation datasets have been accumulated in the waters surrounding Taiwan， these datasets were primarily collected for specific purposes and remain fragmented; whether they can be transformed into evidence supporting governance decisions has rarely been systematically examined. Using the waters surrounding the Third Liquefied Natural Gas (LNG) Receiving Terminal at Guantang， Taoyuan as a case study， this study evaluates whether existing multi-source marine observation data can respectively support governance judgments regarding anthropogenic pressure， ecological status， and physical background conditions. To characterize anthropogenic pressure， Automatic Identification System (AIS) data were used to identify areas of relatively low human disturbance around Taiwan. Within the study area， an approximately 0.79 km² low-disturbance zone was delineated， providing a reference for the potential delineation of marine OECM boundaries. However， AIS data only reflect the spatial distribution of human activities and are insufficient， by themselves， to serve as a sufficient condition for marine OECM identification. To assess ecological status， existing EIA ecological and chemical data were integrated with long-term ocean circulation reanalysis data from the Copernicus Marine Environment Monitoring Service (CMEMS) to examine whether the relationships among physical， chemical， and biological factors were consistent with the operational logic of coastal ecosystems. The observed relationships were generally consistent with ecological mechanisms reported in previous studies， indicating that such EIA data have potential to serve as ecological baselines and support governance tracking. In addition， high-frequency (HF) radar was used to observe local circulation patterns in the study area and estimate water residence time. Owing to its dynamic and near-real-time observational capability， HF radar complements conventional static marine datasets. However， because the current observation period remains relatively short， these data were not incorporated into the long-term ecological correlation analysis， although they hold potential for strengthening future dynamic monitoring. The three analytical components above correspond respectively to anthropogenic pressure， ecological status， and physical background， each addressing only one dimension of governance judgment; they must be cross-referenced and mutually reinforced to form a preliminary， trackable， and updatable basis for governance judgment. The core purpose of this study is to evaluate whether existing marine observation data can support such governance judgments， providing an empirical foundation for the governance application of marine data in Taiwan. This approach， initially applied to the waters off the Guantang LNG Terminal in Taoyuan， still requires longer-term and more intensive monitoring for further validation， and may provide a reference direction for data integration in support of Taiwan′s promotion of Marine Spatial Planning (MSP) and the designation of marine OECMs.
