CAJ | 학술논문

分形与多重分形已逐渐渗透到环境地球化学调查与评价领域,通过分形与多重分形方法、结合变异系数和富集系数,初步探讨了海南省琼海市表层土壤中重金属元素的来源.结果显示,研究区表层土壤中Pb元素的高含量区明显与琼海市南部地区几大农场的分布密切相关,显示Pb可能受人为因素影响强烈, As的富集可能来源于农业活动,Ni的富集主要来源于成土母岩的风化,其他元素受到后期人类活动影响较小或基本未受影响.
분형여다중분형이축점삼투도배경지구화학조사여평개영역,통과분형여다중분형방법、결합변이계수화부집계수,초보탐토료해남성경해시표층토양중중금속원소적래원.결과현시,연구구표층토양중Pb원소적고함량구명현여경해시남부지구궤대농장적분포밀절상관,현시Pb가능수인위인소영향강렬, As적부집가능래원우농업활동,Ni적부집주요래원우성토모암적풍화,기타원소수도후기인류활동영향교소혹기본미수영향.
The increasing application of fractal and multifractal in environmental geochemistry investigation and assessments has proved that the distribution of element contents in soils and stream sediments possesses fractal and multifractal properties. As the heavy metals in soils are of great importance in environmental geochemistry research, most researches are focused on the origins of heavy metals in soils were based on traditional statistical methods, such as correlation analysis, cluster analysis, factor analysis and discriminant analysis. In this paper, the origins of heavy metals of topsoil in Qionghai City, Hainan Province were studied by using fractal and multifractal methods, integrated with variation coefficients and accumulation coefficients. The results indicate that the contents of Pb in topsoil were strongly impacted by human activities and the accumulation of As and Ni resulted from agricultural activities and weathering of soil forming rocks, respectively. Whereas human activities have little or even no effects on those of other five heavy metal elements in the topsoil.