EPA-105-FA18-03-D016

105

9,460 千元

空氣品質管理

2016/02/04

2016/12/31

呂世宗

空保處

林渤原

國立中央大學

大氣空氣、環境監測及檢測

長程輸送、酸雨、大氣汞

long-range transport, acid rain, atmospheric mercury

林登秋；許桂榮；彭啟明

林能暉

邱佳陽

03-4254069#

jense_chiu@mail2000.com.tw

本報告研究目的為 (1) 維護台灣酸雨監測網，進行長期監測與資料分析； (2) 持續進行大氣汞溼沉降及重金屬監測網，彙整與評析國際大氣汞乾沉降量測 與估算方法，於中壢測站進行大氣汞乾沈降量測與估算先期測試，同時計算乾 溼沉降量並與國際現況比較；(3) 應用區域大氣模式整合系統，模擬評估台灣環 境受局部或區域大氣污染物輸送之衝擊，提供環保署進行空氣品質管理與進行 國際跨境污染傳輸責任歸屬評估決策之參考；(4) 針對空氣品質異常事件，修正 事故發生時之空氣品質統計數值； (5)探討酸雨對台灣生態環境系統營養循環影 響；(6)更新與維護台灣酸雨資訊網；(7)積極推動及參與區域大氣污染相關議題 之國際合作與技術交流；(8)評估與推動兩岸酸雨監測合作。今年研究重點成果 如下：  2016年1-12月全國14站共採集到1254個樣本。pH值分布上，除北部中壢與新竹 站pH值在5.0以下，其餘12站pH值皆在5.0以上，全國pH值平均為5.55，高於酸 雨pH值之標準(pH < 5)，顯示雨水酸化情況已見改善，唯南北兩地雨水酸化的程 度差異仍然存在。  施肥實驗結果顯示北東眼山與蓮華池二地的施肥反應與預期相符，低海拔缺 磷，高海拔缺氮，故酸雨添加無機氮對高海拔森林之生長有促進作用，但對低 海拔森林則無明顯作用。過量之無機氮可能反而會淋溶伴隨鹽基陽離子的流 失，使得原本鹽基飽和度就偏低的土壤進一步酸化，而對生態系生產有不利影 響。  更新台灣酸雨網頁(http://www.acidrain.org.tw)，新增即時或近期之全球酸雨及環 保相關議題之新聞等更多資訊。  持續參與聯合國全球降水化學及沉降科學評估資料庫、參與聯合國全球降水化 學監測網品保中心全球比對及經拜訪中國廈門環保局、北京大學及中國科學院 等單位後，福州馬祖已展開酸雨同步監測，並進行資料交換，2017年將持續進 行。

長程輸送、酸雨、大氣汞

EPA-105-FA18-03-D016_公開版 .pdf

25MB

2017/5/1 上午 12:00:00

The goals of this study are (1) to maintain acid deposition network for conducting a long-term monitoring and data analysis, (2) to maintain the integrated atmospheric mercury and heavy metals monitoring network, collect the dry deposition methods of atmospheric mercury to estimate the mercury dry / wet deposition and compare with the other countries’ monitoring data, (3) to establish and maintain an integrated atmospheric modeling system for studying the long-range transport of air pollutants and local air pollutants in order to assess their impact to Taiwan air quality, and further to provide fundamental information to EPA for air pollution management, (4) to revise the PSI data when extreme air pollution events occur, (5) to investigate the impact of acid rain to the ecosystem’s nutrient cycling, (6) to update and maintain the web site of acid rain study in Taiwan, (7) to promote international and cross-strait cooperation and technical exchanges on regional air pollutant issues. To date, our achievements are highlighted below:  The 1254 samples in 14 stations all over Taiwan were collected in 2016. The average pH for all the samples is 5.55.  The situation of acid rain in Taiwan is slightly improved. Annual average pH values for most of sites are greater than 5.0. The northern Taiwan is still worse than the southern Taiwan.  The fertilize experiment result from Lian-Haw-Chih and Mt. North Tongyen Experimental Forest are expected. The ecosystem at high and low altitude are lacking of nitrogen and phosphorus, respectively. Therefore, the inorganic nitrogen deposition has a positive effect on the growth of high altitude forest but no obvious effect to the low altitude forest. However, the excessive inorganic nitrogen deposition may increase the leaching effect and acidify the soil. This will cause the negative impact on the production of ecosystems.  The web site (http://acidrain.epa.gov.tw) of Taiwan acid rain study has been updated with more information.  We have continued to promote and participate in international collaborations and technical exchanges, for example, Quality Assurance Science Activity Center of UN, and the World Meteorological Organization Global Precipitation Chemistry and Deposition Science Assessment. Meanwhile, Prof. Lin has also visited the Xiamen EPB, Peking University, Chinese Academy of Science and CRAES to discuss about future collaborations. From January 2016, the cross-strait stations, Fuzhou and Matsu have already started to cooperate in acid deposition monitoring and data exchanging. We’ll continue this work in 2017.

long-range transport, acid rain, atmospheric mercury