Assessing Spatial Variability of Pollution Potential and Creating Land-Use Management Strategies in the Taipei Water Specific Area

台北水源特定區污染潛勢空間變異性分析及土地利用管制策略研擬

張嘉玲(Chia-Ling Chang) ； 林佑澤(You-Tse Lin) ； 闕蓓德(Pei-Te Chiueh)

《農業工程學報》 64卷1期 (2018/03) Pp. 1-10

https://doi.org/10.29974/JTAE.201803_64(1).0001

摘要

This study applies the export coefficient and natural breaks classification methods to assess the spatial variability of pollution potential in the Taipei Water Specific Area (TWSA). This work divides the TWSA into twenty-two subwatersheds based on digital elevation data, among which there are six subwatersheds with grade A pollution potential which is the highest level. Stricter land-use policy should be implemented in subwatersheds with larger pollution potential. If these subwatersheds implement land-use management strategies and change 50% of farmlands and 50% of built-up areas to forested areas, the number of subwatersheds with grade A pollution potential can be reduced from six to two. The land-use management strategies addressed in this study can be useful for classifying land-use restrictions in the TWSA.

關鍵字

Finite Mixture Model ； Heavy Metal ； Soil Pollution

並列摘要

本研究應用輸出係數法及自然分級法評估台北水源特定區污染潛勢之空間變異性，依照數值高程資料將研究區域切割成22個子集水區，其中有6個子集水分區屬於高污染潛勢區域，建議須採取較嚴格的土地利用管制策略。本研究評估結果顯示，若將高污染潛勢區域之土地利用型態稍作變化，將50%農地及50%社區變更為林地時，高污染潛勢區域則可以縮小，由原先的6個子集水區降到僅有2個子集水區屬於高污染潛勢區域。本研究所提出之土地利用管制策略可以供台北水源特定區管理單位參考之用。

並列關鍵字

非點源污染 ； 污染潛勢 ； 集水區管理 ； 自然分級法