论文代写：北京的空气污染

论文代写：北京的空气污染

整个中国人口已经从多年遭受空气污染。有中国的空气污染主要来源:

有两种主要污染物是造成很大的空气污染在北京今年前三个月。二氧化氮是第一个,另一个是颗粒物。颗粒物的直径是2.5微米至10微米也称为PM10。2013年1月,人们已经发现,周围的颗粒物增加了47%,与去年同期相比。这个数据是由北京市环境保护局负责人陈田。

高水平的排放是主要原因的增加这两种污染物。陈先生说:“那些生活和生产产生的排放在城市里远远超过环境所能采取“。地形和天气条件也负责上述污染物的增加。最近我们看到,相对湿度在首都最高水平在过去的十年。表面风旅行在过去十年的最低速度。所有这些条件导致低温逆温层吸引了污染物。

论文代写：北京的空气污染

Entire population of China has been suffering from Air Pollution from many years. There are following primary sources of Air Pollution in China:

There are two major pollutants which are responsible huge Air Pollution in Beijing in the first three months of this year. Nitrogen dioxide is the first one and the other one is particulate matter. The diameter of particulate matter lies between 2.5 and 10 micrometers which is also called as PM10. In January 2013, it has been found that the particulate matter has been increased by around 47 percent as compared to the same month last year. This data is given by the head of Beijing Municipal Environment Protection Bureau, Chen Tian.

High level of emissions is the major reason behind the increase in these two pollutants. Mr. Chen said “the emissions created by those living and producing in the city far exceed what the environment can take”. Topography and weather conditions are also responsible for the increase in above mentioned pollutants. Recently we have seen that the relative humidity in the capital is at its highest levels in the last ten years. The surface wind is travelling at its lowest speed in the last decade. All these conditions are leading to lower-temperature inversion layer which attracts pollutants.