Spatial Distribution and Pollution Evaluation of Heavy Metals in Cherry Orchard Soil in Qinzhou District, Tianshui City Based on GIS
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    Abstract:

    [Objective] The status of soil heavy metal pollution was researched to provide scientific basis for promoting the sustainable development of cherry orchard industry in Qinzhou District, and for soil heavy metal pollution prevention and control in other fruit land.[Methods] Six towns of cherry orchard production area in Qinzhou District of Tianshui City(Taijing, Yuquan, Xikou, Guanzi, Mudan and Yangjiasi) were taken as the research sites. Where the spatial distribution characteristics of heavy metal pollution in surface soil was illustrated using method of spatial analysis. And the heavy metal environmental quality and its potential ecological risk were evaluated by Nemerow comprehensive pollution index and pollution load index.[Results] Overall, the soil heavy metal pollution of cherry orchard in Qinzhou District was light, but the soil heavy metal pollution in the northeast region was serious than that in the southwest region of the research sites.[Conclusion] The prominent heavy metal element in the cherry orchard is Pb; and Zn, Cr, Cu pollution also existed but belong to light pollution level; Cd pollution is the most light. It is obvious different among the contents of the five heavy metal elements. The heavy metal polluted towns mainly concentrated in Taijing, Yuquan and Xikou County that are adjacent to downtown, for the reason of traffic and intensive human interference, are seriously polluted.

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刘强,冯娜,张娅娅,刘雪媛.基于GIS的天水市秦州区樱桃园土壤重金属元素空间分布与污染评价[J].水土保持通报英文版,2017,37(3):258-263

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History
  • Received:September 27,2016
  • Revised:October 28,2016
  • Adopted:
  • Online: July 11,2017
  • Published: