Application of a LRT Model to Acid Rain Control in China

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• 作者：Jiming Hao ; Lei Duan ; Xuelong Zhou ; and Lixin Fu
• 刊名：Environmental Science & Technology
• 出版年：2001
• 出版时间：September 1, 2001
• 年：2001
• 卷：35
• 期：17
• 页码：3407 - 3415
• 全文大小：627K
• 年卷期：v.35,no.17(September 1, 2001)
• ISSN：1520-5851

文摘

For further control of acid rain and SO₂ pollution in China,acid rain control zones and sulfur dioxide pollutioncontrol zones were designated where acid rain or seriousSO₂ pollution occurs or may occur. In this study, sulfurdeposition in east China was computed through a policy-oriented, two-dimensional Eulerian model for long-range transport and deposition of SO₂ and SO₄^2-. Themodel predictions were in accordance with the wet depositionmonitored. Results show that concentrations of SO₂ andSO₄^2- are higher in north China than those in the south, andhigh deposition of sulfur occurs in most areas of NorthChina, in the lower reaches of the Changjiang (Yangtze) Riverand around Chongqing and Guiyang in southwest China.Total emission of SO₂ from the modeling region (from 19Nto 42N, and from 104E to 124E) was about 20 milliontons in 1995. The model predicts that 48% of this depositswithin the region as dry deposition, 38% deposits aswet deposition, and only about 14% was transported outof the region. The modeling results of sulfur deposition weredirectly applied in designating acid rain control zones inChina, and the emission-deposition relationship derived wasalso used to formulate middle- and long-range planningprograms for regional acid rain control in China.