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首页> 外文期刊>International Journal of Phytoremediation >Field Note: Successful Establishment of a Phytoremediation System at a Petroleum Hydrocarbon Contaminated Shallow Aquifer: Trends, Trials, and Tribulations
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Field Note: Successful Establishment of a Phytoremediation System at a Petroleum Hydrocarbon Contaminated Shallow Aquifer: Trends, Trials, and Tribulations

机译：实地考察：在石油烃污染的浅层含水层中成功建立植物修复系统的趋势，试验和研究

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摘要

We report the establishment of a mixed hybrid poplar (Populus spp.) and willow (Salix spp.) phytoremediation system at a fuel-contaminated site. Several approaches were used to balance competing goals of cost-effectiveness yet successful tree establishment without artificial irrigation or trenching. Bare root and unrooted cuttings were installed using either: (1) 1.2 m deep holes excavated with an 8 cm diameter auger using a direct-push rig and backfilled with the excavated, in situ soil; (2) 1.2 m deep holes created with a 23 cm diameter auger attached to a Bobcat rig and backfilled with clean topsoil from offsite; and (3) shallow holes between 15-30 cm deep that were created with a 1.3 cm diameter rod and no backfill. Tree mortality from initial plantings indicated contaminated zones not quantified in prior site investigations and remedial actions. Aquifer heterogeneity, underground utilities, and prior remediation infrastructure hampered the ability of the site to support a traditional experimental design. Total stem length and mortality were measured for all planted trees and were incorporated into a geographic information system. Planting early in the growing season, augering a larger diameter hole, and backfilling with clean, uncontaminated topsoil was cost effective and allowed for greater tree cutting growth and survival.
机译：我们报告了在一个受燃料污染的地方建立了混合杂种杨（Populus spp。）和柳树（Salix spp。）植物修复系统。使用了几种方法来平衡成本效益和成功建立树木的竞争目标，而无需人工灌溉或挖沟。裸根和无根插条的安装使用以下两种方法之一：（1）用直推式钻机用直径8厘米的螺旋钻开挖1.2 m深的孔，并用开挖的原位土回填; （2）在山猫钻机上安装一个直径为23厘米的螺旋钻，钻深1.2 m，并从场外回填干净的表层土; （3）15-30厘米深的浅孔，这些孔由直径1.3厘米的杆形成，没有回填。最初种植的树木造成的树木死亡表明受污染的区域在先前的现场调查和补救措施中尚未量化。含水层的异质性，地下公用设施和先前的补救基础设施阻碍了该站点支持传统实验设计的能力。测量所有种植树木的总茎长和死亡率，并将其纳入地理信息系统。在生长季节的早期进行种植，在直径较大的孔上开凿，并用干净，未污染的表土回填是符合成本效益的，并且可以使树木砍伐的生长和存活率更高。

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