城市化对西双版纳辐射雾的影响

利用景洪气象站和大勐龙气象站的资料，对西双版纳辐射雾减少的原因进行了分析。结果表明：1960－1984年，地形地质条件相近的景洪站与大勐龙站的年雾日数、年均气温、年均湿度、年均最高气温、年均最低气温等气象要素的变化一致，可以认为两站的自然气候变化是一致的。而1985年以后，两站年雾日数和年平均湿度的变化出现较大差异。通过对人文条件的对比发现，景洪市的城市化进程远远大于大勐龙站。因此，我们初步认为城市化对西双版纳辐射雾减少所起的作用远远大于自然气候变化和森林砍伐的作用。

Effects of Urbanization on Radiation Fog in Xishuangbanna Area

Using the data from Jinghong and Damenglong weather station, we analyzed the reasons of radiation fog reducing in XishuangBanna, Yunnan province. The results show that the climatic features of annual foggy day, mean annual temperature, mean annual humidity, mean annual maximum temperature and mean annual minimum temperature etc of Jinghong and Damenglong were very similar from 1960 to 1984. However. after 1985, the variations of foggy day and mean annual humidity in Jinghong and Damenglong were different due to urban construction and natural climatic variation. The urbanization plays the very important role on radiation fog reducing in the area