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天津蓟运河故道消落带土壤种子库特征与土壤理化性质分析

翟付群 许诺 莫训强 李洪远

翟付群, 许诺, 莫训强, 李洪远. 天津蓟运河故道消落带土壤种子库特征与土壤理化性质分析[J]. 环境科学研究, 2013, 26(1): 97-102.
引用本文: 翟付群, 许诺, 莫训强, 李洪远. 天津蓟运河故道消落带土壤种子库特征与土壤理化性质分析[J]. 环境科学研究, 2013, 26(1): 97-102.
ZHAI Fu-qun, XU Nuo, MO Xun-qiang, LI Hong-yuan. Characteristics of Soil Seed Banks and Soil Physical and Chemical Properties of Hydro-Fluctuation Belt in Jiyun Canal[J]. Research of Environmental Sciences, 2013, 26(1): 97-102.
Citation: ZHAI Fu-qun, XU Nuo, MO Xun-qiang, LI Hong-yuan. Characteristics of Soil Seed Banks and Soil Physical and Chemical Properties of Hydro-Fluctuation Belt in Jiyun Canal[J]. Research of Environmental Sciences, 2013, 26(1): 97-102.

天津蓟运河故道消落带土壤种子库特征与土壤理化性质分析

基金项目: 国土资源部公益性行业科研专项(201111015);天津市自然科学基金重点项目(11JCZDJC24500)

Characteristics of Soil Seed Banks and Soil Physical and Chemical Properties of Hydro-Fluctuation Belt in Jiyun Canal

  • 摘要: 为确定蓟运河故道消落带土壤种子库特征与土壤理化性质之间的关系,开展土壤萌发试验并测定了土壤理化性质. 结果表明:①土壤物种呈3个聚类组,聚类组1分布在土壤含水率为50%~100%、w(全盐)为0.8~1.4 g/kg的区域,聚类组2分布在土壤含水率为40%~50%、w(全盐)为0.4~0.8 g/kg的区域,聚类组3分布在土壤含水率为25%~40%、w(全盐)为0.2~0.4 g/kg的区域;②土壤w(有机质)、w(全盐)和含水率对土壤种子库物种的分布影响较大,而w(速效K)、w(速效N)、w(速效P)和pH对其影响不大;③随着土壤w(全盐)、含水率的增加及w(有机质)的减少,土壤种子库物种中一年生植物所占比例呈增加趋势,二年生植物比例先减少后增加,多年生植物比例先增加后减少;④随着土壤w(全盐)、含水率的增加以及w(有机质)的减少,消落带土壤种子库的Shannon-Wiener指数和Margalef丰富度指数呈下降趋势,而生态优势度和Pielou均匀度指数随着水位的降低有增大的趋势. 研究得出天津蓟运河故道消落带土壤种子库特征与土壤理化性质有重要关系,适当地进行人为管理和调控对土壤环境的改善及土壤种子库多样性增加有积极作用.

     

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出版历程
  • 收稿日期:  2012-06-11
  • 修回日期:  2012-11-10
  • 刊出日期:  2013-01-25

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