| 英文摘要 |
The purpose of this two-year project is to screen and evaluate the fast-growing and high-pollutant-uptake trees for steel industrial parks in Taiwan. The first-year study is focusing on industrial parks with steel smelter factories. There are four major tasks in this first-year project: (1) To review all the literatures related with fast-growing and high-pollutant-uptake trees in steel industrial parks; (2) To investigate and identify all tree species growing well in at least three steel industrial parks; (3) To measure the pollutant uptake rates of major tree species belonging to fast-growing and high-pollutant-uptake group with instruments; (4) Comprehensive evaluation and grading all the fast-growing and high-pollutant-uptake trees species tested in this study for future application in steel industrial parks in Taiwan. The measurements of pollutant (including SOX、HF、NOX) uptake rates by tree species were conducted in bag branch enclosure chamber. The tolerance of these tree species to salt spray were also tested for evaluating their performance in inland or coastal areas. After a series of field investigation around five steel industrial parks in Taiwan, a total of 25 tree species were preliminarily selected and listed for detail measurements of pollutant uptake rates and salt spray tolerance. From first year’s results, we found that marabutan, silvery Messerschmidia, iron wood, and Linden hibiscus have higher uptake rates for sulfur dioxide. For HF uptake measurement, seashore ardisia, Taiwan zelkova, Norfolk island pine, Eucalyptus urophylla,and marabutan showed the higher uptake rates. To nitrogen oxides, the higher uptake rates were found on iron wood, juniper Tamarisk, silvery Messerschmidia, date palm, China berry, and marabutan. Results showed that Taiwan nato tree, Norfolk island pine, date palm, juniper Tamarisk, seashore ardisia, silvery Messerschmidia, iron wood, and marabutan are salt tolerant species. In conclusion, we recommend the better tree species for inland steel industrial parks are Eucalyptus urophylla, lemon eucalyptus, Koelreuteria elegans, Madagascar Almond, China berry, marabutan, Linden hibiscus and seashore ardisia While the better tree species for coastal steel industrial parks are iron wood, marabutan, silvery Messerschmidia, Linden hibiscus, Norfolk island pine, date palm, juniper Tamarisk, and seashore ardisia.
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