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大兴安岭主要林型土壤Zn、Mn形态及潜在生态风险分析

刘玉杰 满秀玲

刘玉杰, 满秀玲. 大兴安岭主要林型土壤Zn、Mn形态及潜在生态风险分析[J]. 北京林业大学学报, 2015, 37(7): 45-52. doi: 10.13332/j.1000-1522.20140482
引用本文: 刘玉杰, 满秀玲. 大兴安岭主要林型土壤Zn、Mn形态及潜在生态风险分析[J]. 北京林业大学学报, 2015, 37(7): 45-52. doi: 10.13332/j.1000-1522.20140482
LIU Yu-jie, MAN Xiu-ling. Morphology of soil Zn and Mn in main forest types and potential ecological risk in the Great Xing'an Mountains[J]. Journal of Beijing Forestry University, 2015, 37(7): 45-52. doi: 10.13332/j.1000-1522.20140482
Citation: LIU Yu-jie, MAN Xiu-ling. Morphology of soil Zn and Mn in main forest types and potential ecological risk in the Great Xing'an Mountains[J]. Journal of Beijing Forestry University, 2015, 37(7): 45-52. doi: 10.13332/j.1000-1522.20140482

大兴安岭主要林型土壤Zn、Mn形态及潜在生态风险分析

doi: 10.13332/j.1000-1522.20140482
基金项目: 

国家自然科学基金项目(31170420)

详细信息
    作者简介:

    刘玉杰.主要研究方向:森林水文。Email:1103639954@qq.com 地址:150040黑龙江省哈尔滨市和兴路26号东北林业大学林学院。

    责任作者:

    满秀玲,博士,教授。主要研究方向:水土保持与土地荒漠化防治。Email:mannefu@163.com 地址:同上。

Morphology of soil Zn and Mn in main forest types and potential ecological risk in the Great Xing'an Mountains

  • 摘要: 使用BCR连续提取法和重金属形态评价方法(RSP),分别对大兴安岭北部3种主要林型(落叶松、樟子松和白桦)土壤重金属Zn、Mn的形态特征及其潜在生态风险进行分析。BCR连续提取法是将重金属分为以下4种形态:可交换态及弱酸可提取态(EX)、可还原态(RED)、可氧化态(OXI)和残渣态(RES)。RSP表示重金属的污染程度,并将其分为4个等级:无污染,轻度污染,中度污染,重度污染,其值为土壤中次生相中的重金属含量(Msec)与原生相中的重金属含量(Mprim)的比值。研究结果表明:土壤全Mn含量显著高于土壤全Zn含量。3种林型中,落叶松林土壤全Mn含量最高(1169.01±0.74)mg/kg,白桦林最低(470.62±0.65)mg/kg,且3种林型间差异达极显著水平(P<0.01);土壤全Zn含量按降序排列为樟子松林(103.09±0.40)mg/kg>落叶松林(61.02±0.14)mg/kg>白桦林(46.15±0.15)mg/kg。土壤Mn的主要赋存形态为RED-Mn,而土壤Zn的主要存在状态为RES-Zn和OXI-Zn,2种重金属的可提取态比例均大于40%,具有较高的二次释放潜力,且主要分布于表层土壤中。2种重金属的RSP指数为Mn(18.24)>Zn(1.32),均表现为白桦林>樟子松林>落叶松林,且空间分布特征明显。

     

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出版历程
  • 收稿日期:  2015-02-07
  • 修回日期:  2015-02-07
  • 刊出日期:  2015-07-31

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