Temporal and Spatial Distribution of Nitrogen and Phosphorus Cropland Load of Livestock Manure in Breeding Industry of Shaanxi Province
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    Abstract:

    [Objective] Investigating the potential pollution risks of livestock manure to soil and other environment in order to provide a scientific basis for prevention and control non-point source pollution caused by breeding industry.[Methods] Taking Shaanxi Province as an example, nitrogen and phosphorus cropland load of livestock manure were calculated and the spatial and temporal distribution features were analyzed.[Results] (1) Nitrogen and phosphorus cropland load of livestock manure in Shaanxi Province reached to the maximum in the period from 2006 to 2007, while decreased dramatically to the minimum in 2008, and then increased gradually. From 2008 to 2010, the average value of nitrogen and phosphorus cropland load increased by 73.0% and 59.4%, respectively. Although nitrogen and phosphorus cropland load of livestock manure in Yan'an and Weinan City was the lowest among all the cities, the growth rate was the fastest. (2) According to the spatial distribution of nitrogen and phosphorus cropland load between 2008 and 2010, nitrogen and phosphorus cropland load was the maximum in Hanzhong City, while it was the minimum in Yan'an and Weinan City. In 2010, the average value of nitrogen cropland load showed as:Hanzhong > Ankang > Yulin > Baoji > Xianyang > Shangluo > Tongchuan > Xi'an > Yan'an > Weinan, and the average value of phosphorus cropland load showed as:Hanzhong > Shangluo > Baoji > Yulin > Xianyang > Xi'an > Ankang > Tongchuan > Yan'an > Weinan.[Conclusion] Based on a comprehensive analysis in Shaanxi Province, it suggests that livestock manures should be disposed intensively in Hanzhong, Ankang, Shangluo, Baoji and Yulin City, so that the pollution risks of soil and water resource can be decreased.

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易秀,陈生婧,田浩.陕西省养殖业畜禽粪便氮磷耕地负荷的时空分布[J].水土保持通报英文版,2016,36(3):235-240

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History
  • Received:July 14,2015
  • Revised:August 13,2015
  • Adopted:
  • Online: July 12,2016
  • Published: