108

8,760 千元

空氣品質管理

2019/09/24

2020/09/23

黃超群

空保處

隋婉君

新紀工程顧問有限公司

大氣空氣

河川揚塵、預報及應變機制、裸露地

River Fugitive Dust、early warning and contingency mechanisms、river bare land

陳詩靜

02-77313232#265

jean700926@gmail.com

環保署自100年起即協調水利署、農委會與地方政府共同辦理揚塵防制工作，各部會權責分工、工作內容及改善目標等，行政院分別於102年核定「河川揚塵防制及改善推動方案（101年至104年）」、106年核定「空氣污染防制行動方案」及109年核定「空氣污染防制行動方案(109年至112年)」。透過歷次行動方案，水利署每年持續於各河川進行河床裸露地改善作業，108年於各河川共辦理綠覆蓋223公頃，水覆蓋1,282公頃，其他覆蓋與治理共571公頃，累計改善面積約2,076公頃。農委會林務局辦理防風林新植、撫育、保安林缺口補植與保安林收回復編，擴大造林面積，108年共完成280公頃，大幅減少河床裸露地面積。 本計畫蒐集國內外抑塵工法，依國內各河川特性，提出適合可行作法，並協助召開5場次專案會議及10次現勘活動，且配合相關單位現場勘查活動，透過會議協調平臺，協調各單位確認汛期前與汛期後分工、易發生揚塵區位各種防制工法及各項作業管控期程，檢討河川揚塵防制及改善推動成效。 配合「環保署2020永續地球年」系列活動，本計畫辦理「你登錄 我種樹」網路活動，共計開放1,000人次登錄，期帶動全民植樹淨化與美化環境風氣，達以愛心植樹護臺灣。另於濁水溪出海口大沙丘上辦裡綠覆蓋作業，選定耐風、耐旱之黃瑾及馬鞍藤進行植栽，綠覆蓋面積約2.04公頃，以減抑濁水溪揚塵。 本計畫依據專業氣象預報資料，經由季節、氣象條件等因子判斷，進行濁水溪、高屏溪、卑南溪及立霧溪河川揚塵預警作業，提供7日、3日、1日及當日河川揚塵預警予河川管理機關、地方政府等提前進行預防作業。 另針對揚塵情形較為嚴重之濁水溪流域，行政院特別於107年4月20日核定「濁水溪揚塵防制及改善行動方案」，自濁水溪揚塵防制及改善行動方案執行以來，濁水溪揚塵事件日逐年減少，108年事件日為29日，除達成108年預定目標外，較106年59日及107年50日，減少42%以上揚塵事件日，顯示全方位執行各項防制措施，確實能有效減緩揚塵。 108年各河川鄰近測站PM10年平均值較107年下降，顯示河川所在區域空氣品質逐年改善，其中濁水溪麥寮測站下降21.1%、崙背測站下降12.1%。108年河川揚塵發生日數各河川皆較107年度降低，其中濁水溪降低42%(107年50日，108年29日)，高屏溪及卑南溪則各發生2日。109年1-9月共發生10日揚塵事件，濁水溪2日，高屏溪則已發生8日，總次數雖較108年同期減少8日，但高屏溪為歷年最高，值得注意。

河川揚塵、預報及應變機制、裸露地

108年度期末報告定稿.pdf

11MB

2020/12/14 上午 12:00:00

Since 2011, the Environmental Protection Administration has coordinated the Water Resources Agency, the Council of Agriculture and local governments to jointly handle fugitive dust prevention and control work, defining the division of powers and responsibilities, work content, and improvement objectives, etc. between the ministries and departments. The Executive Yuan approved the "Prevention and promotion to improve river dust project of Zhuoshui River (2012-2015)" in 2013, the "Air Pollution Prevention and Control Action Plan" in 2017, and the "Air Pollution Prevention and Control Action Plan (2020-2023)". Through these series of action plans, the Water Resources Agency continues to carry out riverbed bare land improvement works in various rivers every year. In 2019, a total of 223 hectares of green coverage, 1,282 hectares of water coverage, and a total of 571 hectares of other coverage and treatment were handled in various rivers. The cumulative improved area was about 2,076 hectares. The Forestry Bureau, Council of Agriculture planted new and maintained existing windbreak forests, performed protection forest gap repalanting, and protection forest restructuring, and expanded the afforestation area. In 2019, a total area of 280 hectares was handled, and the area of riverbed bare land was greatly reduced. This project collects and evaluates domestic and foreign fugitive dust reduction methods, and proposes suitable and feasible methods according to the characteristics of various domestic rivers. 5 project meetings and 10 on-site surveys were organised. In addition, in cooperation with relevant units' on-site survey activities, via the meeting coordination platform, the project coordinated with the various units to define the division of labor before and after the flood season, various prevention and control methods, monitored the schedule of various works for locations prone to figurative dust, and review the effectiveness of the prevention and promotion to improve river dust project. In conjunction with the "Environmental Protection Administration’s 2020 Sustainable Earth Year" activity series, this project organized the "You login, I plant Trees" online event, which was opened for login for 1,000 people. It aimed to promote the people to plant trees for air purification and beautify the environment, to show their love and protect Taiwan through tree planting. Moreover, green mulch work was carried out on the big sand dunes at the mouth of Zhuoshui River. Wind- and drought-tolerant Hibiscus Tiliaceus and Bayhops were selected for planting. The green cover area is about 2.04 hectares to reduce fugitive dust at Zhuoshui River. Based on professional weather forecast data and judged by factors such as seasons and weather conditions, this project issues fugitive dust warnings for Zhuoshui River, Gaoping River, Beinan River and Liwu River 7-days, 3-days, and 1 day ahead as well as on the same day to river management agencies and local governments, for them to carry out preventive operations in advance. Moreover, to focus on the Zhuoshui River basin where the fugitive dust problem is more serious, the Executive Yuan specially approved the "Zhuoshui River Dust Prevention and Improvement Action Plan" on April 20, 2018. Since the implementation of the action plan, the number of fugitive dust incident days at Zhuoshui River has reduced year by year. The number of incident days in 2019 is 29. In addition to achieving the target for 2019, compared with 59 incident days in 2017 and 50 days in 2018, the number of incident days has been reduced by more than 42%. This shows that the full implementation of various preventive measures can indeed effectively slow down fugitive dust. In 2019, the annual average PM10 value recorded at each river's measuring station is decreased compared with 2018, indicating that the air quality in the area where the river is located has been improving year by year; with the value at Zhuoshui Mailiao station dropped by 21.1% and the Lunbei station dropped by 12.1%. In 2019, the number of river fugitive dust incident days in each river was lower than that in 2018; with the value at Zhuoshui river decreased by 42% (50 days in 2018, 29 days in 2019), the number of incidents days at Gaoping River and Beinan River was respectively 2 days. From January to September 2020, a total of 10 fugitive dust incidents days were recorded; with 2 days at Zhuoshui River and 8 days at Gaoping River. Although the total number of dust incident days has been reduced by 8 days compared with the same period in 2019, Gaoping River is experiencing the highest number of incident days in history, which requires attention.

River Fugitive Dust、early warning and contingency mechanisms、river bare land