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Sustainability 2016, 8(1), 61; doi:10.3390/su8010061

Long-Term Cropping Effects on Agricultural Sustainability in Alar Oasis of Xinjiang, China

1,2,* , 3
College of Resources and Environment Science, Xinjiang University, Urumqi 830046, China
Key Laboratory of Oasis Ecology, Xinjiang University, Urumqi 830046, China
Xinjiang Institute of Ecology and Geography, University of Chinese academy of sciences, Urumqi 830011, China
Author to whom correspondence should be addressed.
Academic Editor: Marc A. Rosen
Received: 19 October 2015 / Revised: 13 December 2015 / Accepted: 5 January 2016 / Published: 9 January 2016
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Agricultural sustainability has become a major concern in arid regions of China. In order to better understand the influence of continuous cropping on soil quality, six experimental fields were established in the Alar Oasis of Xinjiang, including uncultivated land (as a zero year treatment duration) and five different continuous cropping years on cotton fields, with different cropping durations (5, 10, 15, 20 and 25 years, respectively). Thirteen soil indicators were selected including soil physicochemical properties, nutrient properties and enzymatic activities. The results show that duration of continuous cropping of cotton fields significantly influences a number of soil properties. Cultivation durations ranked according to soil quality indexes (SQI) are as follows: 15 years (0.828) > 20 years (0.816) > 10 years (0.668)> 5 years (0.548) > 25 years (0.377) > 0 years (0.205), and sustainable yield index (SYI) are as follows: 10 years (0.830) > 15 years (0.777) > 20 years (0.667) > 5 years (0.586) > 25 years (0.159). View Full-Text
Keywords: agricultural sustainability; continuous cropping; soil quality; Alar Oasis agricultural sustainability; continuous cropping; soil quality; Alar Oasis

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Gong, L.; He, G.; Liu, W. Long-Term Cropping Effects on Agricultural Sustainability in Alar Oasis of Xinjiang, China. Sustainability 2016, 8, 61.

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