抽象的

The stagnant air and haze in China : where come and go?

Zhenling Liu

In the last several years, the air pollution in north China had been taken as great threaten to economy development. The air pollution and haze had been one of hot topics among experts and normal people. The clear evidence and obvious observation that Haze Pollution or PM2.5 had been stay is threaten to public health under attack. The air pollution had been studied from the observation that north wind and pollution. The result had shown that the pollution is relative with the strong wind. The blue sky depending on the strong wind from North China.