China National Bamboo Research Center, Wenyi Road, West Lake District, Hangzhou, 310012, People's Republic of China.
Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, Hangzhou, 310012, People's Republic of China.
Environ Sci Pollut Res Int. 2017 Dec;24(35):27244-27253. doi: 10.1007/s11356-017-0326-2. Epub 2017 Sep 30.
This study was conducted to investigate the capability of moso bamboo grown alone and in combination with Sedum plumbizincicola to remediate heavy metals. Monoculture of moso bamboo (MM), intercropping of moso bamboo × S. plumbizincicola (IMS), and control (uncultivated, CK) were established in Cu-, Zn-, and Cd-contaminated soil. Soil properties and heavy metal removal capacity were assessed. Results showed that the available and total heavy metal contents in soil (0-20 and 20-40 cm soil layers) were ranked IMS < MM < CK. Available Cu, Zn, and Cd contents were 65.0, 28.7, and 48.4% lower in the IMS and 52.8, 24.8, and 45.5% lower in the MM than those in the CK, respectively. In plants, Cu contents in bamboo rhizomes, branches, and leaves and those of Zn and Cd in all bamboo tissues were significantly higher in the IMS than in the MM. The bioconcentration and translocation factors of bamboo tissues showed an obviously increasing tendency from MM to IMS. Moso bamboo possessed the properties of endurance to heavy metals and high biomass production. Phytoremediation by moso bamboo in association with S. plumbizincicola is an economical strategy to promote heavy metal removal from metal-contaminated soil.
本研究旨在探究毛竹（Phyllostachys edulis）单独及与垂穗景天（Sedum plumbizincicola）混种对重金属的修复能力。在铜（Cu）、锌（Zn）和镉（Cd）污染土壤中设立了毛竹纯林（MM）、毛竹-垂穗景天混种林（IMS）和对照（未耕种，CK）。评估了土壤特性和重金属去除能力。结果表明，土壤中有效态和全量重金属含量（0-20cm 和 20-40cm 土层）的顺序为 IMS<MM<CK。与 CK 相比，IMS 中有效态 Cu、Zn 和 Cd 含量分别降低了 65.0%、28.7%和 48.4%，MM 中分别降低了 52.8%、24.8%和 45.5%。在植物中，IMS 中竹鞭、竹枝和竹叶中的 Cu 含量以及所有竹组织中的 Zn 和 Cd 含量均显著高于 MM。竹组织的生物浓缩和转运因子从 MM 到 IMS 呈明显上升趋势。毛竹具有耐重金属和高生物量生产的特性。毛竹与垂穗景天联合的植物修复是促进受金属污染土壤中重金属去除的经济策略。
