【摘要】 本文根据长时间平衡单箱型模式原理 ,结合兰州市城区特有的地形及气候背景 ,利用 1 989年和 2 0 0 0年兰州市采暖期大气污染源调查资料 ,对兰州市城区采暖期SO2 、NO2 允许排放量进行了模式预测 ,并和实际排放量进行了比较 ,结果表明 :通过近十年的环境治理 ,全城区SO2 削减率从 30 .5 %下降到 1 4.6% ;城关区由 2 3.5 %下降到 6.2 % ;西固区由 5 7.7%下降到 48.1 %。NO2 削减率呈上升趋势 ,全城区削减率由 9.2 %上升到了 38.9% ,特别是西固区由60 .8%上升到 73.3% ,说明兰州市除了要继续削减SO2 排放量外 ,还要加大对NO2 的治理措施。更多还原

【Abstract】 According to the principle of the mode of the balanceable single box in the long time,combining to the background of the distinct landform and climate in Lanzhou,using the 1989 and 2000’s data of the fountain of the air pollution in the period of the heating,forecasting the amount being given off and being allowed of SO 2 and NO 2 in the period of the heating in the city zone in Lanzhou,and comparing with the actual amount,the passage shows the result.It shows:By the environment counter measures for about ten years,the rate of decreasing went down from 30.5% to 14.6% in all the city zone for SO 2; it also went down from 23.5% to 6.2% at Chengguan zone; at Xigu zone it also went down from 57.7% to 48.1%.But the rate of decreasing for NO 2 took on arise,it went up from 9.2% to 38.9% in all the city zone,especially at Xigu zone it went up from 60.8% to 73.3%.更多还原