生态环境变化夺雾的影响

西双版纳地区是的著名的热带雨林多雾区，但７０年代末以来，雾日明显减少，德层明显减弱。１９９７年１１月２３－３０日，实施了一项雾的外场试验计划，本文利用景洪（生态环境变化较大）和勐养９生态环境变化不大）的宏、微观观测资料，对比分析了雾的宏、微观结构和物理过程，并结合气候资料，讨论了生态环境变化对雾的影响。

THE INFLUENCE OF ECOENVIRONMENTAL VARIATION ON FOG

Xisshuangbanna in Yunnan province is a tropical rainforest climate,where fog is frequent. Since 1970s,fog has been decreasing. The field observation of fog is conducted in the winter of 1997. Using the data of Mengyang and Jinghong,the macro-and micro-structure and physical process are analysed. With climate data,the influence of ecoenvironmental variation on fog is discussed. Air temperature increasing and humidity decreasing are the result of city extending,population increasing,industry developing and tropical rain forest coverage decreasing. Furthermore,they result in fog days decreasing and fog formation putting off but fog dissipation in advance and water content decreasing. Ecoenvironmental variation has influence on climate of Jinghong and the climate variation feedbacks ecoenviroment. It is urgent to preserve forest and ecoenvironment to humanity.