...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Water, Air, and Soil Pollution >Clay-to-Carbon Ratio Controls the Effect of Herbicide Application on Soil Bacterial Richness and Diversity in a Loamy Field
【24h】

Clay-to-Carbon Ratio Controls the Effect of Herbicide Application on Soil Bacterial Richness and Diversity in a Loamy Field

机译：黏土碳比控制除草剂的施用对壤土土壤细菌丰富度和多样性的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Soil texture and soil organic carbon (OC) influence the bacterial microenvironment and also control herbicide sorption. A field-scale exploratory study was conducted to investigate the potential interaction between soil texture parameters, herbicides, and soil bacterial richness and diversity. Glyphosate and bentazon were used to evaluate the herbicidal effect on bacterial community under different conditions created by clay and OC gradients in a loamy field. Metabarcoding by high-throughput sequencing of bacterial rDNA was used to estimate bacterial richness and diversity using OTUs, abundance-based coverage (ACE), Shannon diversity index, and phylogenetic diversity. In general, bacterial richness and diversity increased after bentazon application and decreased after glyphosate application. There was no significant effect for field locations with Dexter n (the ratio between clay and OC) values below 4.04 (the median of the values in the field study). The correlation coefficient (r) between bacterial richness and clay decreased after bentazon application, but increased after glyphosate application. Correlations between Dexter n and bacterial indices followed the same pattern, decreasing after bentazon application and increasing after glyphosate application. This indicated that the specific chemical nature of individual herbicides affected bacterial communities. This study reinforced the importance of including soil physical and chemical characteristics to explain the influence of pesticides on the variation in soil bacterial communities in agroecosystems.
机译：土壤质地和土壤有机碳（OC）影响细菌的微环境，并控制除草剂的吸附。进行了实地规模的探索性研究，以研究土壤质地参数，除草剂与土壤细菌丰富度和多样性之间的潜在相互作用。草甘膦和苯达松用于评估壤土中粘土和OC梯度在不同条件下对细菌群落的除草效果。使用细菌rDNA的高通量测序进行元条码估计，使用OTU，基于丰度的覆盖率（ACE），Shannon多样性指数和系统发育多样性来估计细菌的丰富度和多样性。通常，施用苯达松后细菌的丰富度和多样性增加，而施用草甘膦后细菌的丰富度和多样性降低。对于Dexter n（粘土与OC之间的比率）值小于4.04（田间研究中值的中位数）的田地，位置没有显着影响。施用苯达松后细菌丰富度与黏土之间的相关系数（r）降低，但施用草甘膦后增加。 Dexter n与细菌指数之间的相关性遵循相同的模式，在施用苯达松后降低，而在草甘膦施用后增加。这表明单个除草剂的特殊化学性质会影响细菌群落。这项研究强调了包括土壤理化特性在内的重要性，以解释农药对农业生态系统中土壤细菌群落变化的影响。

著录项

  • 来源
    《Water, Air, and Soil Pollution》 |2017年第1期|3.1-3.12|共12页
  • 作者

    Herath H. M. L. I.; Moldrup Per; de Jonge Lis W.; Nicolaisen Mogens; Norgaard Trine; Arthur Emmanuel; Paradelo Marcos;

  • 作者单位

    Aarhus Univ, Dept Agroecol, Blichers Alle 20,Postboks 50, DK-8830 Tjele, Denmark;

    Aalborg Univ, Dept Civil Engn, Thomas Manns Vej 23, DK-9220 Aalborg E, Denmark;

    Aarhus Univ, Dept Agroecol, Blichers Alle 20,Postboks 50, DK-8830 Tjele, Denmark;

    Aarhus Univ, Dept Agroecol, Forsogsvej 1, DK-4200 Slagelse, Denmark;

    Aarhus Univ, Dept Agroecol, Blichers Alle 20,Postboks 50, DK-8830 Tjele, Denmark;

    Aarhus Univ, Dept Agroecol, Blichers Alle 20,Postboks 50, DK-8830 Tjele, Denmark;

    Aarhus Univ, Dept Agroecol, Blichers Alle 20,Postboks 50, DK-8830 Tjele, Denmark|Univ Vigo, Fac Sci, Soil Sci Grp, Dept Plant Biol & Soil Sci, E-32004 Orense, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bentazon; Glyphosate; ACE; Shannon; Soil texture; Metabarcoding;

    机译：苯达松;草甘膦;ACE;香农;土壤质地;元条形码;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号