[1]LIU Xin-chun,HE Qing,ZHONG Yu-ting.Analysis of Distribution and Variation Trend of Acid Rain in the Cities of Xinjiang[J].Research of Soil and Water Conservation,2009,16(01):115-120.
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Analysis of Distribution and Variation Trend of Acid Rain in the Cities of Xinjiang
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 01
Page number:
115-120
Column:
Public date:
2009-02-20
- Title:
- Analysis of Distribution and Variation Trend of Acid Rain in the Cities of Xinjiang
- CLC:
- X517
- DOI:
- -
- Abstract:
- By investigating pH value, K value (conductance) and correlative climate data in Urumqi, Yining, Kumul and Hotan Cities from 1991 to 2008, and analyzing the character of distribution and variation trend of acid rain in Xijiang. Results show: there are more observation times of acid rain in Northern Xinjiang cities than Southern Xinjiang Cities, and there is a slow decreasing trend of yearly average pH value. The changes of Urumqi and Yining cities are dramatic, but Kumul and Hotan cities are not so much. The average changes of K value are more complex and dramatic. The average pH value in Northern Xinjiang cities is significantly lower than Southern Xinjiang cities, and mostly is fluctuating in the vicinity of 6.0. The change range of average pH value is narrower in Northern Xinjiang cities than Northern Xinjiang cities and mostly is fluctuating in the vicinity of 7.0. At the same time, the average K value in Northern Xinjiang cities is far below than Xinjiang cities. There is a downward trend of the average K value in Northern Xinjiang cities but the change is dramatic. The effect factors of the average pH value and K value are so many, and precipitation may be the main factor, and the same time much dust may be one of factors in Southern Xinjiang cities.
- References:
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1900-01-01