溪頭－杉林溪北勢溪上游集水區空氣污染空間變異之研究

Study on the Spatial Variation of Air Pollutants in Upstream Watershed between Xitou and Sun-Link-Sea

衛強(Chiang Wei) ； 曹崇銘(Tsung-Ming Tsao) ； 鄭景鵬(Ching-Peng Cheng)

《國立臺灣大學生物資源暨農學院實驗林研究報告》 31卷4期 (2017/12) Pp. 243-264

https://doi.org/10.6542/EFNTU.2017.31(4).5

摘要

本研究探討溪頭-杉林溪之北勢溪上游集水區之空間污染物之空間變異結構，為臺灣地區進行山區空氣污染物空間分佈之先驅研究。由五處機動監測車於2016年冬季與夏季兩季之空氣污染物監測結果，不同污染物之空間變異與分佈趨勢仍有差異，影響範圍參數值小且變化不大，呈現在極小範圍時其變異值即有很大變化之碎塊效應。與冬季相較，可發現夏季之汙染物濃度除NO與PM_(10)外之兩日平均值均較冬季為低、兩日標準差值除NO_x、CO外均較冬季為高。初步顯示部分空氣汙染物（O_3、PM_(10)）有隨地表高程之增高與擴散之特性、除SO_2呈現高度負相關NO呈現低度負相關外，其餘汙染物、溫度與遊客人數皆呈現高度正相關，空間污染物與車流量之相關性可發現以CO之相關係數為最高。與前人研究結果與氣象物理特性相符，研究結果可作為未來長期追蹤研究區域空氣汙染源之分布與動向之重要參考。

關鍵字

空氣污染 ； 空間變異 ； 監測

並列摘要

This study analyzed spatial variation of air pollutants spreading over upstream Bei- Shi River located at Xitou and Sun-Link-Sea area, which is a pioneering research in mountainous area in Taiwan. Using five mobile monitoring vehicle collecting data during winter and summer in 2016, the study found that spatial distribution and trend varied for different pollutants. Parameter of influence range was very small without significant change, and a large variance exists that implies nugget effect. Compared with those in winter, 2-day average of concentration of air pollutants is lower in summer except NO and PM_(10), while standard deviation in summer is higher than winter except NO_x and CO. Preliminary result also showed that concentration of O_3 and PM_(10) increased and spread as the altitude increased. Pollutants and temperature also showed highly positive correlation with the number of tourists except for the high-negative correlation of SO_2 and low correlation of NO. In addition, CO exhibited the highest positive correlation with number of cars. The result coincides with previous research and meteorological physics, and provides key reference for long-term monitoring of distribution of pollution sources and movement.

並列關鍵字

Air pollutants ； Spatial variation ； Monitoring