| 生物土壤与生态 |
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| Heterogeneity of Oasis Soil in Bohe and Jinghe River Basins of Xinjiang |
| WU Zhao-peng, JIN Hai-long |
| Department of Geography, Geography and Tourism Science College, Xinjiang Normal University, Urumqi 830054, China |
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Abstract The increasing human activities in Bohe and Jinghe river basins have severely affected the local eco-environment and social development. The authors firstly analyze the soil physical-chemical properties, including pH value, nutrients, alkali-hydrolyzed nitrogen, available phosphorus, rapidly-available kalium and salt contents. The results indicated that soil fertility is generally lower than that of 20 years ago due to large soil particles, low soil organic matter and high level alkaline. Secondly, study on law of soil fertility distribution with Kriging interpolation showed that soil fertility in southeast is better than in northwest. Finally, it was found out by grey correlation analysis that the main driving factors to soil heterogeneity include natural factors annual evapotranspiration and disaster weather days, and human factors cultivated land area and chemical fertilizer wastage, and the human factors are predominant.
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Received: 13 October 2008
Published: 20 January 2010
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2010, Vol. 30 
