Medicago sativa L. enhances the phytoextraction of cadmium and zinc by Ricinus communis L. on contaminated land in situ

被引：33
|
作者：
Xiong, Peng-peng [1 ,2 ]
He, Chi-quan [1 ,2 ]
Kokyo, O. H. [3 ]
Chen, Xueping [2 ]
Liang, Xia [2 ]
Liu, Xiaoyan [2 ]
Cheng, Xue [2 ]
Wu, Chang-lu [1 ,2 ]
Shi, Zheng-chi [1 ,2 ]
机构：
[1] Shanghai Univ, Shanghai Key Lab Bioenergy Crops, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Coll Environm & Chem Engn, Shanghai 200444, Peoples R China
[3] Ctr Environm Sci Saitama, 914 Kamitanadare, Kisai, Saitama 3470115, Japan
来源：
ECOLOGICAL ENGINEERING | 2018年 / 116卷
基金：
日本学术振兴会;
关键词：
Plant coexistence; Phytoextraction; Cadmium; Zinc; Ricinus communis L; Medicago sativa L; HEAVY-METAL UPTAKE; BRASSICA-JUNCEA; CITRIC-ACID; PHYTOREMEDIATION; CD; ACCUMULATION; SOILS; PLANT; TRANSLOCATION; AMENDMENTS;
D O I：
10.1016/j.ecoleng.2018.02.004
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
Crop co-planting is widely used in agriculture because it can increase total crop yields through increased resource use efficiency, and phytoremediation is based on the contaminant remediation system in plants. This study focused on the phytoextractive effects of co-planting Ricinus communis and/or legumes in Cd- and Zn-contaminated soil. A Cd-and Zn-contaminated factory relocation site in Shanghai was selected for the experiment, and according to the results of a potential ecological risk assessment of heavy metals, the study area was divided into 3 levels of pollution: slight, moderate, and high. The results showed that the presence of Medicago sativa can significantly increase the height and biomass of R. communis, and there was a greater impact on the chlorophyll content of R. communis at higher pollution levels. Differences in pollution levels could significantly change the oil content of R. communis plants, but M. sativa can alleviate the impact of heavy metals. The presence of M. sativa increased the cumulative amount of cadmium and zinc in R. communis by 1.14 and 2.19 times, respectively. In short, co-planting R. communis and legumes remediated contaminated soil and may be one practical phytoremediation pathway for heavy metal-contaminated soil in the future.
引用
收藏
页码：61 / 66
页数：6
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