| 摘要: |
| 研究通过对江门市林地土壤采样，分析测试江门市林地土壤重金属指标，运用地统计分析等方
法，揭示江门市林地土壤重金属的空间格局特征。结果表明：江门市林地土壤江门市林地土壤中镍元素
含量为 0.00~41.13 mg/kg，平均值为 4.35 mg/kg，均低于 60.00 mg/kg（农用地土壤污染风险筛选值）；铜
含量为 0.29~172.93mg/kg，均值为 11.33 mg/kg，局部地区超过农用地土壤铜污染筛选值（高于 50.00 mg/
kg）；镉元素含量为 0.00~0.15 mg/kg，平均含量为 0.00 mg/kg，均低于 0.30 mg/kg（农用地土壤污染风险
筛选值）；铅含量为 3.67~312.13 mg/kg，平均含量为 29.21 mg/kg，局部地区超过农用地土壤铅污染筛选值
（高于 70.00 mg/kg）。江门市林地土壤重金属镍、铜、镉、铅元素含量在空间分布上基本一致，均为中间
低、四周高的分布特征。 |
| 关键词: 森林土壤 土壤重金属 重金属污染 |
| DOI： |
| 分类号: |
| 基金项目:广东省省级财政专项资金“林地土壤调查”，广东省林业科技计划项目 (2019-07)，广东省省级生态公益林效益补偿资金 省统筹经费项目。 |
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| Spatial Characteristics of Heavy Metals in Forest Soil in Jiangmen City |
|
daizhiming1, zouzuyou2, kangjian2, yufei2, zhu hangyong2, zhang zhongrui2, ding xiaogang2
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1.Agricultural Science and Technology Innovation Center of Jiangmen, Guangdong 529099, China;2.Guangdong forestry science research institute
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| Abstract: |
| Forest soil, as a necessary environmental condition for plant growth, affects plant growth and
development by supplying and regulating soil water, nutrients, air and heat. This study analyzed and tested
the heavy metal indexes of the forestland soil in Jiangmen city by sampling the forestland soil, and revealed
the spatial pattern characteristics of heavy metal in forestland soil in Jiangmen city by using the methods of
geostatistical analysis. The results showed that the content of nickel in the forest soil of Jiangmen city ranged from
0.00 mg/kg to 41.13 mg/kg, with an average value of 4.35 mg/kg, both lower than 60.00 mg/kg(screening value of
soil pollution risk in agricultural land), and there was no risk of nickel pollution. The copper content ranged from
0.29 to 172.93 mg/kg with an average value of 11.33 mg/kg, which exceeded the screening value of soil copper
pollution in agricultural land (higher than 50.00 mg/kg) in some areas, indicating the risk of copper pollution.
Cadmium content ranged from 0.00 mg/kg to 0.15 mg/kg, with an average content of 0.00 mg/kg, all lower than
0.30 mg/kg (screening value of soil pollution risk in agricultural land), without cadmium pollution risk. The plumbum content ranged from 3.67 to 312.13 mg/kg, with an average of 29.21 mg/kg. In some areas, it exceeded
the screening value of plumbum pollution in soil of agricultural land (higher than 70.00 mg/kg), indicating the risk
of plumbum pollution. The contents of heavy metals nickel, copper, cadmium and plumbum in the forest soil of
Jiangmen city are basically the same in spatial distribution, which are low in the middle and high around. |
| Key words: forest soil soil heavy metals heavy metals pollution |
