埋地管道安装对土壤结构和作物根系分解的影响

IF 2.3 4区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY Agricultural & Environmental Letters Pub Date : 2022-02-08 DOI:10.1002/ael2.20057
Elnaz Ebrahimi, Mehari Z. Tekeste, Robert Horton, H. Mark Hanna
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引用次数: 1

摘要

在管道安装的道路右侧(ROW)地役区发生的严重土壤操纵导致土壤退化和产量损失。本研究的目的是研究使用土壤结构视觉评价方法(VESS)和根凋落物取样作为表征管道安装对土壤退化影响的替代方法。在爱荷华州玉米(Zea mays L.)收获一个月后,从受干扰的(壕沟和高度交通的ROW地区)和未受干扰的(ROW附近)土壤剖面中获得了骨料标本和根系样本的数字图像。土壤团聚体图像显示管道安装导致土壤结构恶化。根属性受ROW活性的显著影响(p < 0.05)。高度交通区域未分解根质量(3,568 kg ha-1)是未受干扰土壤(1,779 kg ha-1)的2倍。这些数据提供了土壤结构质量和根系分解速率受土壤扰动影响的证据。VESS和根系测量可以在未来的研究中用于评估土壤扰动的影响。
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Buried pipeline installation impacts on soil structure and crop root decomposition

The severe manipulation of soil that occurs in the right-of-way (ROW) easement areas for pipeline installation leads to soil degradation and yield loss. The objectives of this study were to investigate the use of the Visual Evaluation of Soil Structure method (VESS) and root litter sampling as alternative ways to characterize pipeline installation impacts on soil degradation. Digital images of aggregate specimens and root samples were obtained from disturbed (trenched and highly trafficked ROW areas) and undisturbed (adjacent to the ROW) soil profiles one month after maize (Zea mays L.) harvest in Iowa. Images of soil aggregates indicated that pipeline installation deteriorated soil structure. Root attributes were significantly (p < 0.05) affected by the ROW activities. The non-decomposed root mass in the highly trafficked area (3,568 kg ha–1) was two times greater than the root mass in undisturbed soil (1,779 kg ha–1). These data provide evidence that soil structure quality and root decomposition rates are affected by soil disturbance. The VESS and root measurements can be used in future studies to evaluate the impacts of soil disturbance.

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来源期刊
CiteScore
3.70
自引率
3.80%
发文量
28
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