CAJ | 학술논문

在对海南省菠萝主要种植区--文昌、琼海和万宁菠萝种植基地土壤中重金属元素含量进行调查的基础上,通过与土壤环境质量标准进行对比,对其含量现状进行了评价,并通过元素之间的比较,土壤浅层与深层富集状态的对比,研究了重金属元素的来源及迁移转化规律.结果表明.研究各区土壤中Cd、Hg、Pb、Zn均在自然背景值水平;Cr、Ni、Cu三种重金属在玄武岩区土壤中均超标,其中Cr、Nj表现为严重超标;As元素在万宁龙滚变质岩区土壤中强烈富集.整体看,研究区菠萝种植基地土壤中重金属元素含量在浅、深层土壤中的变化规律较为一致,反映为受人为活动因素影响较小,母岩母质类型是造成土壤重金属含量高低的主要原因.
재대해남성파라주요충식구--문창、경해화만저파라충식기지토양중중금속원소함량진행조사적기출상,통과여토양배경질량표준진행대비,대기함량현상진행료평개,병통과원소지간적비교,토양천층여심층부집상태적대비,연구료중금속원소적래원급천이전화규률.결과표명.연구각구토양중Cd、Hg、Pb、Zn균재자연배경치수평;Cr、Ni、Cu삼충중금속재현무암구토양중균초표,기중Cr、Nj표현위엄중초표;As원소재만저룡곤변질암구토양중강렬부집.정체간,연구구파라충식기지토양중중금속원소함량재천、심층토양중적변화규률교위일치,반영위수인위활동인소영향교소,모암모질류형시조성토양중금속함량고저적주요원인.
Investigations on heavy metals in soil were undertaken at several pineapple plantations in Wenchang, Qionghai and Wanning of Hainan Province with the objectives to evaluate the present status of heavy metals content, and to analyze heavy metals source, fate and pathways in the soils, different elements and enrichment conditions at different depth of the soil being compared. The finding indicates concentrations of Cd, Hg, Pb and Zn remain at the natural baseline level, while those of Cr, Ni and Cu exceeding the relevant standard permit levels in soils of basalt areas, arsenic being strongly enriched in the areas of metamorphic rock at Long-gun, Wanning City. On the whole, heavy metal concentrations in top soil of these plantations varied in the same way as in the deep layers, from which it can be inferred that the concentrations of heavy metal mainly depend on the type of host rock and its matrix rather than the human activities.