CAJ | 학술논문

采用单项质量指数与综合质量指数相结合的方法，对海南省农产品产地的土壤进行了重金属Cd、 Hg、 As、 Pb、 Cr、 Cu、 Zn和Ni含量的抽样调查分析与评价。结果表明，海南省农产品产地土壤重金属的平均含量均低于“HJ 332-2006”（食用农产品产地环境质量评价标准）规定的限值，土壤重金属的单项质量指数均≤0．7，综合质量指数为0．33，土壤环境质量均为1级，属于清洁水平，适宜发展无公害农产品。同时发现，部分产地的土壤中重金属含量有超标现象，海口有部分样品Cd、 Hg、 Cr、 Cu和Ni超标，三亚有部分样品Cd和Hg超标，儋州、澄迈均以Ni超标为主，琼海有部分样品Cr、 Cu和Ni超标。重金属含量之间多呈正相关关系，其中As与Pb、 As与Cu、 Cr与Zn、 Cu与Zn之间的相关性达到了极显著水平， Cd与Hg、 Pb、 Ni， Pb与Cu， Cr与Cu， Cu与Ni之间的相关性达到了显著水平。大部分监测点土壤中重金属含量均高于海南省水稻土自然背景值，表明在监测点土壤中产生了重金属累积。
채용단항질량지수여종합질량지수상결합적방법，대해남성농산품산지적토양진행료중금속Cd、 Hg、 As、 Pb、 Cr、 Cu、 Zn화Ni함량적추양조사분석여평개。결과표명，해남성농산품산지토양중금속적평균함량균저우“HJ 332-2006”（식용농산품산지배경질량평개표준）규정적한치，토양중금속적단항질량지수균≤0．7，종합질량지수위0．33，토양배경질량균위1급，속우청길수평，괄의발전무공해농산품。동시발현，부분산지적토양중중금속함량유초표현상，해구유부분양품Cd、 Hg、 Cr、 Cu화Ni초표，삼아유부분양품Cd화Hg초표，담주、징매균이Ni초표위주，경해유부분양품Cr、 Cu화Ni초표。중금속함량지간다정정상관관계，기중As여Pb、 As여Cu、 Cr여Zn、 Cu여Zn지간적상관성체도료겁현저수평， Cd여Hg、 Pb、 Ni， Pb여Cu， Cr여Cu， Cu여Ni지간적상관성체도료현저수평。대부분감측점토양중중금속함량균고우해남성수도토자연배경치，표명재감측점토양중산생료중금속루적。
Soil heavy metals contents, including Cd, Hg, As, Pb, Cr, Cu, Zn and Ni, in the agro-producing areas of Hainan province were investigated by random sampling .Environmental quality con-ditions of the heavy metals were evaluated by methods of single quality index and complex quality in-dex.Results showed that the average contents of the metals were all under the limiting values pre-scribed by “HJ 332-2006 , Farmland Environmental Quality Evaluation Standards for Edible Agricul-tural Products”.Single quality indices of the eight elements were lower than or equal to 0.7 , and com-plex quality index of the eight elements was 0.33.Soil environmental quality in the three study places were all set at the first class belonging to clean level , being fit for planting non-pollution agricultural products.However, the contents of heavy metals in some areas were beyond the limiting values , such as the contents of Cd , Hg, Cr, Cu, and Ni from some Haikou samples , the contents of Cd and Hg from Sanya samples , the Ni content from Danzhou and Chengmai samples , and the contents of Cr , Cu, and Ni from Qionghai samples .For most heavy metals , they were positively correlated with one another in contents .For instance , there was a significant correlation between the content of As and the contents of Pb, As, and with the contents of Cu and Cr , or with the contents of Zn , Cu and Zn.Contents of most tested heavy metals were higher than natural background value of agricultural soils in the prov -ince, indicating that the metals have been accumulated in study soils .