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况〇與户財1。外之兩日平均值均較冬季為低、兩日標準差值除 、CO外均較冬季為高。初步顯示部分空氣汙染物（〇3、尸风。）有隨地表高程之增高與 擴散之特性、除

ThisstudyanalyzedspatialvariationofairpollutantsspreadingoverupstreamBei-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 〇, while standard deviation in summer is higher than winter except NOx and CO. Preliminary result also showed that concentration of O3 and PM” 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 SO2 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.