论文部分内容阅读
大气灰尘自然沉降量和大气中二氧化硫的浓度是反映大气污染程度的重要指标,我市自1971年下半年起,即已开始了系统的观测(其间1973年曾一度中断),虽然每年观测的点数和测定次数有所不同,但自1975年起则相对固定。广州市及近郊基本上可分为六个行政区,即荔湾、越秀、东山、海珠、芳村和员村。前四个属市区范围,后两个属郊区。各区采样点的位置可参阅图1。
The natural sedimentation of atmospheric dust and the concentration of sulfur dioxide in the atmosphere are important indicators reflecting the degree of atmospheric pollution. Since the second half of 1971, the city started systematic observation (during which it was suspended in 1973) although the number of observed points per year The number of measurements is different, but it has been relatively constant since 1975. Guangzhou and the suburbs can basically be divided into six administrative regions, that is, Liwan, Yuexiu, Dongshan, Haizhu, Fangcun and member of the village. The first four are urban areas, the latter two belong to the suburbs. The location of sampling points in each area can be seen in Figure 1.