Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Shaqra University, Shaqra, Saudi Arabia.
Environ Monit Assess. 2020 Feb 28;192(3):202. doi: 10.1007/s10661-020-8177-6.
Heavy metal-polluted wetlands could be remediated by harvesting metal accumulating plants, i.e., using phytoextraction. We studied a macrophyte Phragmites australis and assessed its potential to be utilized in the phytoremediation of heavy metal-polluted wetlands, specifically in wadis in the Arabian Peninsula. We sampled six polluted wadi sites and measured Mn, Fe, Ni, Cu, Zn, Cd, and Pb concentrations in the roots, rhizomes, stems, and leaves of P. australis, as well as in sediment and water. We analyzed the correlations between different plant organs, water, and sediment, and calculated the accumulation and translocation of the metals to the plant organs. We found indications for the accumulation of Cd, Zn, and Pb into P. australis and somewhat contradictory indications for the accumulation of Cu. We suggest that P. australis is a good candidate to be utilized in the phytoremediation of heavy metal-polluted wadis in the Arabian Peninsula where the few wadis offer many valuable ecosystem services for urban citizens.
受重金属污染的湿地可以通过收割金属积累植物来修复，即利用植物提取。我们研究了一种大型植物芦苇，并评估了其在受重金属污染的湿地植物修复中的潜力，特别是在阿拉伯半岛的干谷中。我们在六个受污染的干谷地点采样，并测量了芦苇的根、根茎、茎和叶以及沉积物和水中的 Mn、Fe、Ni、Cu、Zn、Cd 和 Pb 浓度。我们分析了不同植物器官、水和沉积物之间的相关性，并计算了金属向植物器官的积累和迁移。我们发现芦苇体内 Cd、Zn 和 Pb 的积累迹象明显，而 Cu 的积累迹象有些矛盾。我们认为芦苇是在阿拉伯半岛受重金属污染的干谷中进行植物修复的一个很好的候选者，因为这些干谷为城市居民提供了许多有价值的生态系统服务。
