Environmental degradation in nepal

Environmental degradation is a very big problem in Nepal which is causing human health hazard particularly due to the creation or disposal of pollution, sound, heat or wastes. Increasing number of vehicles, garbage and dust particles are the main factors of pollution particularly in city areas resulting into health hazards like bronchitis, soaring throat, asthma, chest infection and lung diseases. According to a study carried out by Mr. Sharma in 1997 in the Kathmandu valley SO2 has been found up to 202 μg cm and NO2 to 126 μg cm particularly in winter months when a thick layer of fog covers the till 10 am in the morning. All the gases are mixed within the limited air below the fog and the ground. On the other hand, in Kathmandu city alone municipal waste of 500 m a day and also liquid waste dumped directly into the rivers at the rate of 500,000 l d worsens the situation and makes the city polluted and dirty.