| 摘要: |
| 对云浮市油茶（Camellia oleifera）适生地区采用随机布点、专题布点和林分布点相结合的方
法进行布点，采集土壤样品测定土壤重金属 Zn、Cu、Pb、Cd、Ni，对 5 种重金属元素进行含量变异分析
及污染评价，结果显示：5 种重金属元素的含量变异程度均大于 50%，为中强度变异，云浮市 5 个地点之
间重金属有显著差异，5 种元素的总体均值均小于广东省土壤环境背景值与土壤环境质量标准中的二级标
准；单因子污染指数评价显示元素 Cu 的污染程度最高，云浮市总体内梅罗综合污染指数为 0.73，处于污
染等级中的 2 级，污染水平为尚清洁，而云浮市下属的郁南县、云城区和云安区的土壤综合污染等级为
3 级，属于轻污染，罗定市属于警戒线，只有新兴县的污染程度为安全。因此，需要对郁南县、云城区、
云安区和罗定市的污染采用物理、化学、生物相结合的方法进行治理。 |
| 关键词: 云浮市 油茶适生地区 重金属 变异 污染评价 |
| DOI： |
| 分类号:X53 |
| 基金项目:广东省省级科技计划项目“油茶专用肥及配套技术研究”（2015A020208001），广东省林业科技创新专项资金项目“森林土壤养分状况调查与评价”（2014KJCX022） |
|
| Variation Analysis of Soil Heavy Metal Content and Its Pollution Evaluation in Yunfu City of Habitat Area of Camellia oleifera |
|
XIE Yini
|
|
Guangdong Academy of Forestry,Guangzhou
|
| Abstract: |
| Taking Camellia oleifera habitat area of Yunfu city as the research area, the method of
distributing random spots, special spots and forest distribution points was adopted. The soil samples were
collected to determine the contents of five heavy metal elements (Zn, Cu, Pb, Cd and Ni) and conduct a pollution
assessment. The results showed that the variation of five heavy metal elements were more than 50%, which were
medium intensity variation. There were significant differences of heavy metals among 5 locations in Yunfu city.
The overall average of the five elements is less than the second level of the soil environmental background value
and the soil environmental quality standard of Guangdong Province. The evaluation of single factor pollution
index showed the highest degree pollution of Cu. The overall Nemerow pollution index of Yunfu city was 0.73,
which was at level 2 of the pollution level, and the pollution level was still clean. Yunan county, Yuncheng district
and Yun''an district, the subordinate of Yunfu city, has a comprehensive soil pollution level of 3 and belongs to the
light pollution. Luoding city belongs to the warning line. Only the pollution in Xinxing county is safe. Therefore,it is necessary to control the pollution of Yunan county, Yuncheng district, Yun''an district and Luoding city by
measures of the combination of physics, chemistry and biology. |
| Key words: Yunfu city Camellia oleifera habitat area heavy metal variation pollution evaluation |
