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題名 | 應用地理空間技術分析區域環境空氣品質之探討=A Research in Regional Ambient Air Quality Using Geographic Information and Spatial Analysis Technology |
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作者 | 詹志銘; | 書刊名 | 行政院環境保護署環境監測及資訊處技術彙刊 |
卷期 | 2 2009.03[民98.03] |
頁次 | 頁33-44 |
分類號 | 445.63 |
關鍵詞 | 空氣品質監測; 徐昇式分析法; 地理資訊系統; Air quality; Thiessen polygon method; Geographic information system; |
語文 | 中文(Chinese) |
中文摘要 | 我國針對一般空氣品質的監測,主要監測之污染物包括二氧化硫(SO2)、一氧化碳(CO)、臭氧(O3)、懸浮微粒(PM10)、二氧化氮(NO2)等,宥於監測人力與成本,只能採用定點之自動化採樣監測方式,全國雖已設置72個空氣品質監測站,但多數鄉鎮並未設站,且一空氣品質監測站之監測數據能否完全代表該鄉鎮值得深入探討。 有鑑於國內許多統計數據都以鄉鎮為範圍,例如人口、各種癌症死亡率、工商統計等,環境品質監測之點數據有需要轉換成以鄉鎮為範圍之面數據,以方便後續進行與其他社經、衛生等資料做比較研究。 本文嘗試應用地理資訊系統之空間分析技術,引進在雨量推估上經常使用的徐昇式多邊形(Thiessen Polygon)法,將我國空氣品質監測之點監測數據轉換成鄉鎮區域之面監測數據,並繪出全國各月份之臭氧及懸浮微粒濃度分布圖,將各月份空氣品質之變化以圖形顏色來加強展示效果。 點監測數據轉換為面監測數據之合理性,受限於各鄉鎮地形氣流與周邊環境之不同,本研究以監測車數據與測站的推算值比較,兩者相關係數(R)分別為0.59(臭氧)及0.67(懸浮微粒),但監測車的數據亦僅代表個案,同樣無法反映整個鄉鎮的空氣品質,所以徐昇式多邊形的推算方法仍有其價值,值得繼續的探討。 |
英文摘要 | There are 72 ambient air quality monitoring stations in Taiwan, where in total divides into 368 towns. In average about 20% of these towns get a monitoring station within its boundary. Many health and pollution related statistics are collected with respects to towns, examples like census, mortality rate, industry statistics etc. In this paper, we recalculate the air quality data and map them into Taiwan’s precinct township value. This research introduces “Thiessen Polygon Method” to transfer point values into area values. We take monthly average of suspended particle (PM10) and Ozone (O3) from the monitoring stations, import them into Arcmap 9, a GIS software, and use its spatial module function to transfer them into monthly average for each township. This paper compares the value generated for township air quality to data monitored by mobile van. The resulting correlation coefficient for O3 is 0.59, and for PM10 is 0.67. By considering that the data monitored by mobile van is still point value, which is moderately correlated with calculated township area value, we can not conclude the effectiveness of the GIS transferring method. More research is needed for further verifying the usefulness of transferring point data to township area value. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。