@article{HUANG:316711,
      recid = {316711},
      author = {HUANG, Yuyi and CHEN, Guifen and HUANG, Yanfei and LIU,  Bin and XIONG, Liumei and OU, Xiaoqing and ZHAO, Xiuhe and  ZHOU, Yueyue and PANG, Mei},
      title = {Characteristics and Risk Assessment of Soil Heavy Metal  Contents in Facility Agriculture of Guangxi},
      journal = {Asian Agricultural Research},
      address = {2021-03-20},
      number = {1812-2021-1653},
      month = {Mar},
      year = {2021},
      abstract = {[Objectives] To study the characteristics of soil heavy  metal contents in facility agriculture of Guangxi and  analyze its risks. [Methods] The heavy metal content of 30  surface soil samples taken from facility agriculture in  Guangxi was analyzed. The status of soil heavy metal  pollution in facility agriculture of Guangxi was evaluated  by the single factor index method, geo-accumulation index  method and Hakanson potential ecological risk index method  with reference to the soil background value in Guangxi.  [Results] Compared with the soil background value in  Guangxi, the over-limit rates of heavy metals cadmium,  lead, arsenic, chromium, mercury, copper and zinc in soil  samples were 56.67%, 56.67%, 16.67%, 30.00%, 50.00%, 60.00%  and 80.00%, respectively. Compared with the screening  values of the Soil Environmental Quality - Risk Control  Standard for Soil Contamination of Agricultural Land (for  trial implementation) (GB15618-2018), the over-limit rats  of the heavy metals cadmium, arsenic, copper and zinc in  the surface soil of agricultural facilities in Guangxi were  56.67%, 10.00%, 16.67% and 23.33%, respectively. Except for  the average content of soil cadmium exceeding the screening  value, the evaluation content of the other six soil heavy  metals did not exceed the screening value. According to the  evaluation results of the single factor pollution index  method, the surface soil arsenic and chromium of the  agricultural facilities in Guangxi belonged to the clean  level, lead, mercury, and copper belonged to mild  pollution, and cadmium and zinc belonged to moderate  pollution. According to the evaluation results of the land  accumulation index, the lead, arsenic, chromium and mercury  in the surface soil of the agricultural facilities in  Guangxi belonged to the pollution-free level, while the  cadmium, copper and zinc belonged to the mild-moderate  pollution. According to the evaluation results of the  potential ecological risk index method, the potential  ecological risks of the heavy metals of lead, arsenic,  chromium, copper and zinc in the soil of agricultural  facilities in Guangxi belonged to low potential ecological  risk level, and the potential ecological risks of cadmium  and mercury belonged to moderate risk level. The potential  ecological risk index (RI) of the seven heavy metals in the  soil was 132.46, which belonged to moderate potential  ecological risk. The largest contribution of soil heavy  metals to the potential ecological risk index was cadmium  and mercury. [Conclusions] Taking the soil of facility  agriculture in Guangxi as the object, this paper studied  the characteristics of heavy metal content in facility  agricultural soil and its risk assessment, in order to  provide a scientific basis for facility soil heavy metal  risk prevention and control and provide safe technology for  facility agriculture.},
      url = {http://ageconsearch.umn.edu/record/316711},
      doi = {https://doi.org/10.22004/ag.econ.316711},
}