LIU Qiang, FENG Na, ZHANG Yaya, et al. Spatial Distribution and Pollution Evaluation of Heavy Metals in Cherry Orchard Soil in Qinzhou District, Tianshui City Based on GIS[J]. Bulletin of Soiland Water Conservation, 2017, 37(3): 258-263.
DOI:
LIU Qiang, FENG Na, ZHANG Yaya, et al. Spatial Distribution and Pollution Evaluation of Heavy Metals in Cherry Orchard Soil in Qinzhou District, Tianshui City Based on GIS[J]. Bulletin of Soiland Water Conservation, 2017, 37(3): 258-263. DOI: 10.13961/j.cnki.stbctb.2017.03.044.
Spatial Distribution and Pollution Evaluation of Heavy Metals in Cherry Orchard Soil in Qinzhou District, Tianshui City Based on GIS
[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