CAJ | 학술논문

采用盆栽试验的方法，研究了不同种类牧草对复合污染土壤中多环芳烃(PAHs)和砷(As)的修复作用。结果表明：土壤中PAHs去除的主要途径是植物根际环境微生物的降解作用，通过植物吸收去除的PAHs所占比例极低。在本研究中，对土壤中∑PAHs 去除能力最强的为杂交狼尾草、高丹草和苏丹草，去除率为99.36%~99.67%，去除能力最弱的为菊苣。去除率为97.78%。不同牧草种植下土壤中总As质量分数没有显著差异，但有效态As质量分数存在显著差异，杂交狼尾草、高丹草、苏丹草种植土壤中的有效As质量分数最高，与定苗前相比，其质量分数增加了73.9%~96.6%，早熟禾植土壤中的有效As质量分数最低，其质量分数仅增加了21.4%。盆栽试验结果表明，杂交狼尾草、高丹草、苏丹草对复合污染土壤中PAHs和As去除效果较好，适合用于污灌区复合污染农田土壤的修复与治理。
채용분재시험적방법，연구료불동충류목초대복합오염토양중다배방경(PAHs)화신(As)적수복작용。결과표명：토양중PAHs거제적주요도경시식물근제배경미생물적강해작용，통과식물흡수거제적PAHs소점비례겁저。재본연구중，대토양중∑PAHs 거제능력최강적위잡교랑미초、고단초화소단초，거제솔위99.36%~99.67%，거제능력최약적위국거。거제솔위97.78%。불동목초충식하토양중총As질량분수몰유현저차이，단유효태As질량분수존재현저차이，잡교랑미초、고단초、소단초충식토양중적유효As질량분수최고，여정묘전상비，기질량분수증가료73.9%~96.6%，조숙화식토양중적유효As질량분수최저，기질량분수부증가료21.4%。분재시험결과표명，잡교랑미초、고단초、소단초대복합오염토양중PAHs화As거제효과교호，괄합용우오관구복합오염농전토양적수복여치리。
The effects of different pasture planting on the remediation of PAHs and As in the combined pollution soil were investigated based on the pot experiments. The results presented that the degradation of rhizosphere microorganism was a major way for PAHs removal of soil. The PAHs removal by plant uptake was minor. In this study, the PAHs removal efficiencies were the highest for the soil planted by the hybrid Pennisetum, Gaodan grass and Sudangrass, with the values were 99.36%-99.67%. The lowest corresponding values were 97.78%for the soil planted by the endive. There is no obvious difference for As contents in the soil planted by different pastures. However, the available As contents in the soils planted by the hybrid Pennisetum, Gaodan grass and Sudangrass were highest. They increased 73.9%-96.6%comparing with that in the beginning of the final singling. The available As contents in the soils planted by the bluegrass were lowest, and increased only 21.4%. This study showed that the hybrid Pennisetum, Gaodan grass and Sudangrass were characterized by higher removal efficiencies of PAHs and As in the combined pollution soil. Thus, they were suitable for the remediation and controlling of the combined pollution farmland in the sewage irrigation area.