| 生物土壤与生态 |
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| Impact of Land use on Soil Quality of New Reclamation Oasis in Northwestern Margin Area in Junggar Basin |
| YANG Yu hai; CHEN Ya ning; LI Wei hong; et al. |
| 1.Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; 2.Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences,Urumqi 830011, China; 3.Graduate School of the Chinese Academy of Sciences, Beijing 100039, China; 4.Xinjiang Agricultural Vocational Technical College, Changji 831100, Xinjiang, China |
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Abstract The paper statistically analyzed the soil properties of soil samples from 244 soil sections at 0-30 cm soil layer in the agricultural exploitation area of Kelamayi in Junggar Basin. It was discovered that not only the main soil chemical properties varied spatially, but their changing degrees were significantly different. In general, the soil organic matter content was low, nutrient like nitrogen(N) and phosphorus(P) were scarce, but salt content was high. Monitoring data showed that land-use had changed the soil chemical properties of newly cultivated lands. The longer utilization duration was the obvious change of soil properties appeared. Except for total phosphorus(P), the content of soil organic matter, total nitrogen(N), available nitrogen(N) and available potassium(K) were all enhanced with the increase of land use duration. Besides, the irrigation quota and irrigation approach can influence the soil total salt and pH value at soil surface layer; Planting S. sudanense can also obviously decrease the content of soil salts, among which the content of SO2-4 decreased severely, secondly the content of K+ and Na+, slightly the content of HCO-3, CO2-3 and Cl-. Accordingly, several problems need to be taken into attention in land sustainable utilization of Kelamayi agricultural exploitation area were put forward based on the soil fertility conditions.
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Received: 16 August 2006
Published: 20 January 2008
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2008, Vol. 28 
