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中文摘要：
以上海市的枫泾镇（FJ）、松江新城（SJ）和朱家角镇（ZJJ）为例，研究了小城镇街道灰尘中氮磷的含量水平和分布特征，结果表明：小城镇街道灰尘中总无机氮的含量为11．9-1040．6μg／g，平均含量为117．5μg／g；可溶磷的含量为15．8-265．8μg／g，平均含量为48．7μg／g；各小城镇街道灰尘中的氮磷含量表现为：FJ〉ZJJ〉SJ。各小城镇街道灰尘中氮磷含量的空间分布差异较大，位于城镇中心和风景区内采样点的氮磷含量明显较高，而城镇周边乡村地区含量较低。对各小城镇街道灰尘氮磷含量的季节变化分析表明，秋季小城镇街道灰尘中氮磷的含量明显高于冬季和夏季，温度、降雨量可能是其季节变化的主要影响因子。
英文摘要：
Taking Fengjin Town （FJ） , Songjiang New Aera （SJ） and Zhujiajiao Town （ZJJ） as an example, the content and distribution character of the nitrogen and phosphorus in the street dust of small towns was analyzed. The results showed that the range of total inorganic nitrogen content in street dust was 11.9μg/g～1 040.6μg/g, with the average value of 117.5 μ/g, and the range of dissolved phosphorus content was 15.8μg/g～265.8 μg/g, with the average value of 48.7μg/g. The nitrogen and phosphorus content in the street dust of the three small towns could be ordered as follows： FJ〉ZJJ〉SJ. The spatial distribution of the content of nitrogen and phosphorus in the street dust of each town had much difference. The content of nitrogen and phosphorus was much higher at the sampling sites in the central area of the towns and the scenery area than that in rural area of towns. The seasonal change analysis of the nitrogen and phosphorus content in the street dust of the three small towns showed higher content of nitrogen and phosphorus in autumn than in winter and summer. Temperature and precipitation might be the main factors to affect their seasonal change.
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