CAJ | 학술논문

臭椿（Ailanthus altissima）具有很强的抗逆性，能适应多种不良的环境，在中国广泛分布，是一个很有潜力的修复铜污染土壤的物种。通过种植实验检验臭椿修复铜污染土壤的能力。臭椿实生苗移植于4种不同铜的质量分数（0、29、57和86 mg·kg-1）、3种不同的施肥处理（对照、有机肥、无机肥）的土壤，经过5周种植，测量臭椿根、茎、叶的铜含量及各部分生物量。试验结果表明：1）土壤铜浓度的差异对臭椿生长没有显著影响；2）土壤施肥处理显著影响臭椿生长，施加无机肥生长最佳，对照次之，施有机肥最低；3）随土壤铜浓度增加，臭椿根、茎、叶的铜含量增加，然后趋缓，但似乎根、茎、叶的铜含量变化不同步；4）土壤肥力对臭椿茎、叶的铜含量没有显著影响，但对根的铜含量影响显著，施加无机肥的根中铜含量显著增加。臭椿经过短短5周处理，其体内铜的质量分数就到达120μg·g-1，且铜在各组织中的分布比为根：茎：叶＝2?1?2。相比一些超富集铜的草本植物，臭椿的铜吸收能力尚有距离，但其高生长、高抗逆性、深根系的特点，加之其对其他众多重金属元素的吸收能力使得这个物种在生物修复污染土壤方面的作用不容小觑。本研究丰富了治理土壤重金属污染的物种库，为进一步寻找重金属“超富集植物”，更有效的治理土壤污染提供一定的参考价值。
취춘（Ailanthus altissima）구유흔강적항역성，능괄응다충불량적배경，재중국엄범분포，시일개흔유잠력적수복동오염토양적물충。통과충식실험검험취춘수복동오염토양적능력。취춘실생묘이식우4충불동동적질량분수（0、29、57화86 mg·kg-1）、3충불동적시비처리（대조、유궤비、무궤비）적토양，경과5주충식，측량취춘근、경、협적동함량급각부분생물량。시험결과표명：1）토양동농도적차이대취춘생장몰유현저영향；2）토양시비처리현저영향취춘생장，시가무궤비생장최가，대조차지，시유궤비최저；3）수토양동농도증가，취춘근、경、협적동함량증가，연후추완，단사호근、경、협적동함량변화불동보；4）토양비력대취춘경、협적동함량몰유현저영향，단대근적동함량영향현저，시가무궤비적근중동함량현저증가。취춘경과단단5주처리，기체내동적질량분수취도체120μg·g-1，차동재각조직중적분포비위근：경：협＝2?1?2。상비일사초부집동적초본식물，취춘적동흡수능력상유거리，단기고생장、고항역성、심근계적특점，가지기대기타음다중금속원소적흡수능력사득저개물충재생물수복오염토양방면적작용불용소처。본연구봉부료치리토양중금속오염적물충고，위진일보심조중금속“초부집식물”，경유효적치리토양오염제공일정적삼고개치。
The wide spread and serious soil pollution in our country has threatened the economic development,and needs to be treated seriously. Bioremediation is currently an effective soil pollution control and environment-friendly technology. .Ailanthus altissima(tree of heaven) is one of the most stress tolerate and fast-growing native tree species in China, and has the potential to be used as a pollution mediating tree species in a variety of adverse environmental condition. This study examined the copper (Cu) uptake capability ofAilanthus altissima under four levels of soil Cu contents(0, 29, 57 and 86 mg·kg-1) and three soil nutrition treatments (organic, inorganic fertilizers or no fertilization) for 35 days following complete randomized design. The results demonstrated that 1) the growth ofAilanthus altissima was not affected by the Cu treatments; 2) plant growth was significantly affected by the soil nutrition with the highest growth achieved in the inorganic fertilization treatment; 3) The Cu contents of leaf, stem and root increased and then slowed as the soil Cu content increased, but the changes among the leaf, stem and root were not synchronous; 4) soil nutrition affected the root Cu content, but not that of leaf and stem. The maximum Cu content in the plant tissues was120μg·g-1, and the ratio ofw(Cu in leaf):w(Cu in stem):w(Cu in roots) was about 2:1:2. The results demonstrated that Ailanthus altissima is an effective and promising plant species in mediating Cu contaminated soils.