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Abstract：
Constructed wetland is a proven technology for water pollution removal, but process mechanisms and their respective contribution are not fully understood. The present review details the effect of plants on removal efficiency of constructed wetlands by focusing on literature that includes experiments with unplanted controls for organic carbon and nutrient (N and P) removal. The contribution of plant direct uptake is also assessed. Although it was found that several studies, mostly at laboratory or pilot scales, showed no statistical differences between planted and unplanted controls, some factors were found that help maximize the effect of plants. This study intends to contribute to a better understanding of the significance of the effect of plants in a constructed wetland, as well as to suggest a set of experimental guidelines in this field.
摘要：
人工湿地是一项行之有效的水污染去除技术，但是过程机制及其各自的贡献尚未得到充分理解。本综述通过关注文献，详细介绍了植物对人工湿地去除效率的影响，其中包括对有机碳和养分（N和P）去除的未种植控制的实验。还评估了植物直接吸收的贡献。虽然有几项研究发现,主要是在实验室或中试规模，显示种植和未种植对照之间没有统计学差异，发现了一些有助于最大限度地提高植物效果的因素。这项研究旨在有助于更好地理解植物在人工湿地中的作用的重要性，以及在这一领域提出一套实验指南。
