| 重金属铅、镉在白榆中分布规律和累积特性研究 |
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| 引用本文： | 张永超,陈存根,钟发明,王强,钱红格.重金属铅、镉在白榆中分布规律和累积特性研究[J].西北林学院学报,2011,26(5):6-11. |
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| 作者姓名： | 张永超 陈存根 钟发明 王强 钱红格 |
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| 作者单位： | 西北农林科技大学林学院;西藏昂仁县林业局;重庆市石柱土家族自治县林业局;重庆南川区大观镇人民政府; |
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| 基金项目： | 榆林市科技计划项目(14210334); 陶氏支持榆林白榆试验示范林项目(14210343) |
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| 摘 要： | 研究了重金属铅、镉在白榆中分布和积累,了解其对重金属镉、铅的耐性和抗性,为重金属严重污染地区的造林提供技术依据。通过盆栽试验,探讨了白榆在铅、镉单一及复合处理条件下,对铅、镉元素的吸收累积特性。结果表明:在铅、镉单一及复合处理下,铅、镉元素在白榆各器官中分布规律均表现为:根>茎>叶;在铅、镉单一处理下,转运系数均随处理浓度增加而降低;铅、镉在其地上部分、地下部分的富集系数随处理浓度增加而呈先增后减的趋势;在复合污染下,镉对叶、茎累积铅具有协同作用,对根累积铅无明显影响,铅对根、茎、叶累积镉具有拮抗作用。白榆对铅、镉元素不符合超富集植物条件,但对铅、镉元素表现出一种耐性,因此,白榆适用于铅、镉污染区的种植和绿化。
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| 关 键 词： | 白榆 铅 镉 转运系数 富集系数 |
Distribution and Accumulation of Lead and Cadmium in Ulmus pumila |
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| ZHANG Yong-chao,CHEN Cun-gen,ZHONG Fa-ming,WANG Qiang,QIAN Hong-ge.Distribution and Accumulation of Lead and Cadmium in Ulmus pumila[J].Journal of Northwest Forestry University,2011,26(5):6-11. |
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| Authors: | ZHANG Yong-chao CHEN Cun-gen ZHONG Fa-ming WANG Qiang QIAN Hong-ge |
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| Institution: | ZHANG Yong-chao1,4,CHEN Cun-gen1,ZHONG Fa-ming2,WANG Qiang2,QIAN Hong-ge3(1.College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China,2.Forestry Bureau of Shizhu Tujia Autonomous County,Chongqing 409102,3.Daguan TownshipNanchuan,Chongqing 408400,4.Forestry Bureau of Angren County,Angren,Tibet 858500,China) |
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| Abstract: | Investigations were carried out on the distribution and accumulation of cadmium and lead in Ulmus pumila to understand the tolerance and resistance of the plant to heavy metals and provide a technical foundation for planting in heavy metal pollution areas.A pot experiment was conducted to explore the uptake and accumulation characteristics of lead and cadmium of U.pumila under the conditions of single and combined treatments of lead and cadmium.The results showed that in the conditions of single and combine... |
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| Keywords: | Ulmus pumila lead cadmium translocation factor bioaccumulation factor |
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