我国东部沿海地区酸雨来源研究

The origins of acid rain in the eastern coastal areas in China

１９９２～１９９５年间在我国东部沿海地区进行了降水和气象观测，分析了降水的酸度和化学组成与降水采样时的来流方向的关系，计算了丹东凤凰山和泗礁岛采样时的后推气流轨迹。发现我国东部沿海地区出现酸性很强的酸雨，推断酸雨来自周边国家和地区。由于当地地理位置和气象条件的差异，不同的时间和不同空间里影响的程度也不同。北方沿海的图们和丹东凤凰山的酸雨主要来自朝鲜半岛和日本。东南沿海地区则较为复杂。

The acid precipitation and meteorology in eastern areas were measured from 1992 to 1995. The retalonship between rain acidity and chemical compositions and wind directions during sampling were analysed using wind direction and wind back trajectory. Results show that the severe acid rain in eastern coastal areas was found, and the acid rain probably comes from countries and areas around it. The influence on precipitation acidity in different time and space is not alike due to geographical and meteorological conditions. In general, the acid rain in Tumen and Dandong mainly comes from Korea Penisula and Japan, whereas in south eastern coastal areas the situation is more complex. The acid rain might come partly from Japan and Korea in winter and spring.