| 1 | Water pollution is one of problems Puzzling the development of industry and agriculture in Haiyin. | |
| 2 | The research shows that there are distinctive seasonal differences of air quality in Huanyin district with highness in winter and spring and lowness in autumn and summer. | |
| 3 | The characteristics of spatiotemporal seasonal changes of SO2 and NO2 and TSP in Huanyin are analyzed by statistical methods. | |
| 4 | The main pollutant that leads to decreasing air quality of Huanyin is TSP, however, the roles of other two p... |
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