| 英文摘要 |
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.
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