[1]曾淼,张厚勇.黄河三角洲芦苇湿地不同水期土壤-植被重金属分布特征[J].水土保持研究,2016,23(04):344-350.
　ZENG Miao,ZHANG Houyong.Distribution of Soil and Plant Heavy Metals of Reed Wetland in the Yellow River Delta of China During Seasons[J].Research of Soil and Water Conservation,2016,23(04):344-350.
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黄河三角洲芦苇湿地不同水期土壤-植被重金属分布特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 23 期数: 2016年04期 页码: 344-350 栏目: 出版日期: 2016-08-28
Title:
Distribution of Soil and Plant Heavy Metals of Reed Wetland in the Yellow River Delta of China During Seasons
作者:
曾淼1, 张厚勇2
1. 阿坝师范学院 生化系, 四川 汶川 623002;
2. 山东省济南市环境保护科学研究院, 济南 250014
Author(s):
ZENG Miao1, ZHANG Houyong2
1. Aba Teachers College, Wenchuan, Sichuan 623002, China;
2. Ji’nan Research Academy of Environmental Sciences, Ji’nan 250014, China
关键词:
黄河三角洲; 芦苇湿地; 重金属; 不同水期
Keywords:
Yellow River Delta; reed wetland; heavy metal; seasons
分类号:
X823;X52
摘要:
ICP-AES法研究了黄河三角洲湿地平水期（4月）、丰水期（8月）和枯水期（10月）土壤和植被重金属（Hg，Cu，Zn，Pb，Cd和Cr）含量分布特征，并分析了土壤和植被重金属含量的关系。结果表明：（1）黄河三角洲芦苇湿地表土和底泥Hg，Cu，Zn平均含量变化呈递减趋势，依次表现出：平水期 > 丰水期 > 枯水期，不同时期土壤重金属Hg，Cu，Zn含量均表现为表土 > 底泥；黄河三角洲芦苇湿地表土和底泥Pb，Cd和Cr平均含量变化呈递增趋势，依次表现出：枯水期 > 丰水期 > 平水期，并且不同时期土壤重金属Pb，Cd和Cr含量均表现为底泥 > 表土，局部有所波动，综合分析可知，黄河三角洲芦苇湿地平水期的Hg，Cu，Zn污染最严重，枯水期Pb，Cd和Cr污染最严重；（2）黄河三角洲芦苇湿地表土重金属Hg，Cu，Zn含量高于底泥，表土重金属Pb，Cd和Cr含量低于底泥；（3）黄河三角洲芦苇湿地植被重金属Hg，Cu，Zn，Pb，Cd和Cr含量均显著高于土壤（p < 0.05），说明植被的吸收作用在土壤重金属污染中起着关键作用；（4）主成分分析表明黄河三角洲芦苇湿地土壤中Hg和Zn含量、植被中Pb和Cd的含量变化是黄河三角洲芦苇湿地的重金属污染主要影响因子；相关性分析表明，植被体内的重金属含量主要来自和依赖于土壤重金属含量，同时植被对于土壤各重金属的吸收也保持一定的独立性。
Abstract:
Surface soils and sediments and plant of reed wetland in the Yellow River Delta of China were chosen for monitoring the contamination levels of heavy metals (i. e., Hg, Cu, Zn, Pb, Cd and Cr) in average season (April), flood season (August), and dry season (October) in 2013. Statistical analysis methods were used to analyze the relationship between the heavy metal contents in soil and vegetation. The results indicated that:(1) the contamination of surface soils and sediments of reed wetland in the Yellow River Delta of Hg, Cu and Zn decreased with season which showed the order:average season > flood season > dry season, and the contamination of surface soils of Hg, Cu and Zn was higher than that of sediments in different seasons, however, the contamination of Pb, Cd and Cr show the opposite trend with season and the contamination of surface soils of Pb, Cd and Cr was lower than that of sediments with local fluctuation, comprehensive analysis showed that the contamination of Hg, Cu and Zn in average season was most serious and Pb, Cd and Cr pollution in dry season was most serious; (2) the contamination of surface soils of reed wetland in the Yellow River Delta of Hg, Cu and Zn was higher than that of sediments and contents of Pb, Cd and Cr in surface soils were lower than those in sediments; (3) the contamination of Hg, Cu, Zn, Pb, Cd and Cr of reed wetland plant in the Yellow River Delta was higher than that of soil, which indicated that plant played a key role in the absorption of heavy metals; (4) correlation analysis showed that the contamination of heavy metals in plant mainly came from the soil, at the same time, the plant of reed wetland in the Yellow River Delta keeps the independence in terms of the absorption of heavy metals from the soil.

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备注/Memo

收稿日期:2015-04-25;改回日期:2015-05-26。
作者简介:曾淼(1982-),女,重庆万州人,硕士,讲师,主要研究方向:化学分析。E-mail:zengmiao1968@163.com

更新日期/Last Update: 1900-01-01