东营黄河故道湿地Cu、Cr、Mn、Zn的分布与富集特征
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摘要
对黄河故道湿地土壤重金属Cu、Cr、Mn、Zn的分布和富集性状进行研究,结果表明:4种重金属在不同样带之间有显著性差异,同一样带堤外重金属的含量一般高于堤内,但样带2的Zn在堤内的含量显著高于堤外,且堤内EF-Zn>2,Igeo-Zn>0,表明Zn在样带2堤内生境中达到了中度富集,但黄河故道河堤具有的隔离效应,可以阻断Zn在堤内外生境中的迁移.异速变化表明Al-Cu和Al-Zn的关系容易受到湿地破碎化和外源输入(引黄河水、降雨等)等的影响,应重点关注.
The distribution and enrichment for heavy metals of Cu,Cr,Mn,and Zn in the inside and outside habitats of the old Yellow River were studied in this paper.The results showed that the four heavy metals showed differences in the different sampling stripes.The contents of heavy metals in the outside embankment were generally higher than that in the inside embankment,but the content of Zn was the contrary in the sampling site 2.The Igeo of Zn was found to be greater than 0 and EF of Zn greater than 2 in the inside habitat,indicating that Zn was moderate enrichment in the inside embankment of the sampling site 2.However,the river bank of the old Yellow River had a certain isolation effect on the diffusion and migration of heavy metals from inside to outside of the bank.The allometric analysis showed that the relationship between Cu,Zn and the geological element Al are mostly affected by the wetland fragmentation and external input conditions(water diversion,precipitation,etc.).Therefore,we should pay attention to those changes.
The distribution and enrichment for heavy metals of Cu,Cr,Mn,and Zn in the inside and outside habitats of the old Yellow River were studied in this paper.The results showed that the four heavy metals showed differences in the different sampling stripes.The contents of heavy metals in the outside embankment were generally higher than that in the inside embankment,but the content of Zn was the contrary in the sampling site 2.The Igeo of Zn was found to be greater than 0 and EF of Zn greater than 2 in the inside habitat,indicating that Zn was moderate enrichment in the inside embankment of the sampling site 2.However,the river bank of the old Yellow River had a certain isolation effect on the diffusion and migration of heavy metals from inside to outside of the bank.The allometric analysis showed that the relationship between Cu,Zn and the geological element Al are mostly affected by the wetland fragmentation and external input conditions(water diversion,precipitation,etc.).Therefore,we should pay attention to those changes.
引文
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[2]权轻舟.国内湿地重金属污染评价的研究进展[J].中国农学通报,2017,33(8):60-67.
[3]Bai J,Zhao Q,Lu Q,et al.Effects of freshwater input on trace element pollution in salt marsh soils of a typical coastal estuary,China[J].Journal of Hydrology,2015,520:186-192.
[4]Chen Z,Kostaschuk R,Yang M.Heavy metals on tidal flats in the Yangtze Estuary,China[J].Environmental Geology,2001,40(6):742-749.
[5]Zhao D,Wan S,Yu Z,et al.Distribution,enrichment and sources of heavy metals in surface sediments of Hainan Island rivers,China[J].Environmental Earth Sciences,2015,74(6):5097-5110.
[6]Sun C,Liu J,Wang Y,et al.Multivariate and geostatistical analyses of the spatial distribution and sources of heavy metals in agricultural soil in Dehui,northeast China[J].Chemosphere,2013,92(5):517-523.
[7]徐明露,方凤满,林跃胜.湿地土壤重金属污染特征、来源及风险评价研究进展[J].土壤通报,2015,46(3):762-768.
[8]Hu G,Bi S,Xu G,et al.Distribution and assessment of heavy metals off the Changjiang River mouth and adjacent area during the past century and the relationship of the heavy metals with anthropogenic activity[J].Marine Pollution Bulletin,2015,96(1-2):434-440.
[9]郑立地,肖蓉,姚新颖,等.黄河三角洲潮汐区和生态恢复区湿地土壤特征和重金属分布[J].湿地科学,2015,13(5):535-542.
[10]Xie Z,Zhang H,Zhao X,et al.Assessment of heavy metal contamination and wetland management in a newly created coastal natural reserve,China[J].Journal of Coastal Research,2016,32(2):374-386.
[11]于君宝,董洪芳,王慧彬,等.黄河三角洲新生湿地土壤金属元素空间分布特征[J].湿地科学,2011,9(4):297-304.
[12]仲德林,刘建立.黄河改道后河口至黄河海港海岸冲淤变化研究[J].海洋测绘,2003,23(1):49-52.
[13]郑义.渤海西海岸潮上带湿地重金属积累性风险及溯源分析[D].天津理工大学,2018.
[14]Bonanno G,Giudice R L.Heavy metal bioaccumulation by the organs of Phragmites australis(common reed)and their potential use as contamination indicators[J].Ecological Indicators,2010,10(3):639-645.
[15]张丽,彭重华,王莹雪,等.14种植物对土壤重金属的分布、富集及转运特性[J].草业科学,2014,31(5):833-838.
[16]Gu Y G,Wang Z H,Lu S H,et al.Multivariate statistical and GIS-based approach to identify source of anthropogenic impacts on metallic elements in sediments from the mid Guangdong coasts,China[J].Environmental Pollution,2012,163(4):248-255.
[17]Sarkar S,Ghosh P B,Sil A K,et al.Heavy metal pollution assessment through comparison of different indices in sewage-fed fishery pond sediments at East Kolkata Wetland,India[J].Environmental Earth Sciences,2011,63(5):915-924.
[18]王冠森,柴民伟,栾胜基.深圳典型红树林湿地重金属累积特征比较研究[J].生态环境学报,2017,26(5):862-870.
[19]缐东红,缐春媚.基于地累积和生态风险指数法评价索尔奇湿地公园土壤重金属污染状况[J].北方农业学报,2017,45(4):68-72.
[20]Ceresa F,Belda E J,Kvist L,et al.Does fragmentation of wetlands affect gene flow in sympatric acrocephalus warblers with different migration strategies?[J].Journal of Avian Biology,2016,46(6):577-588.
[21]韩卓汝,赵志忠,袁建平,等.海南岛北部红树林湿地表层沉积物重金属元素分布相关特征及其污染源分析[J].海南师范大学学报(自然科学版),2013,26(1):66-70.
[22]李卫平,王非,杨文焕,等.包头市南海湿地土壤重金属污染评价及来源解析[J].生态环境学报,2017,26(11):1977-1984.