| Trend analysis of the water quality change in surface water functional zone of Xinzhou in Hutuo river basin |
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| DOI：10.16302/j.cnki.1000-7601.2015.02.036 |
| Key Words: Hutuo River Basin water functional zone water quality |
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| Abstract: |
| According to the water quality information of Xinzhou Water Resources Bulletin from 2004 to 2011, analyzed the water quality as the water quality category, the river length ratio of water quality reached the standard and the change of contaminants content in 4 water functional zones, respectively. The results showed that: The water quality category in each water function zone had significantly improved in 2004 to 2011. The river length ratio of water quality reached the standard had obviously risen, but the river length ratio of water quality reached the standard was lower. In 2010, the maximal ratio was still only 50%. Through the principal component analysis, we selected COD and NH3-N as the main factors for the water pollution in water functional zones. The COD and NH3-N contents in each water functional zone had obviously declined during the 8 years. Also the difference was obvious in each functional zone. So it was necessary to carry out the pertinence government in the regional water environment. |
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