摘要
研究了22个灌木柳无性系和27个乔木柳无性系对水体镉污染的修复能力。在Cd^2+浓度为5.0mg/kg的营养液培养条件下培养40d,灌木柳无性系单个插穗的叶片镉吸收量为23.19—121.42μg,平均值为77.38μg;枝条镉吸收量为4.77~32,06μg,平均值是14、16μg;根系镉吸收量变动在75.60~155、22μg,平均值为112.27μg;镉吸收总量介于145.92~272.38μg,平均值达203.81μg。乔木柳单个插穗的叶片镉吸收量为30.66—197.20μg,平均值为100.59μg;枝奈镉吸收量在8.90—31.69μg,平均为18.35μg;根系镉吸收量为116.67~541.58μg,平均为296.40μg;镉吸收总量为202.99~664.56μg,平均值为415.34μg。乔木柳的水体镉修复能力强于灌木柳,其中无性系J2151、J1010、J485的表现最为突出。
The phytoremediation of Cadmium ( Cd^2+ ) contaminated water-body by 22 fruticose willow clones 27 arbor willow clones were studied in this paper. The results showed that Cd^2+ absorbed by the leaves, branches, and roots of fruticose willow clones was 23.19 ~ 121.42 μg (av. 77.38 μg), 4.77 - 32.06 μg (av. 14.16μg), and 75.60 ~ 155.22 μg (av. 112.27 μg) each seeding respectively when the clones were planted in the solution contained 5. 0 mg/L of Cd^2+ for 40d, and the total Cd^2+ absorbed per seeding was 145.92 ~ 272.38 μg, with an average of 203.8ling/seeding. While for arbor willow clones, it was 30.66 - 197.20 μg ( av. 100.59 μg), 8.90 ~ 31.69 μg ( av. 18.35 μg), and 116.67 ~ 541.58 μg ( av. 296.40 μg) respectively, and the totally was 202.99 - 664.56 μg, with an average of 415.34 μg/seeding. Basically the phytoremediation abilities of arbor willow clones were greater than that of fruticose willow clones, and among which clone J2151, J1010 and J485 was the best.
出处
《林业科技开发》
2008年第4期46-49,共4页
China Forestry Science and Technology
基金
国家林业局六大林业重点工程关键技术应用研究与试验示范专项"生物修复型柳树良种选育与试验示范"(编号:2003-OlO-LIO)
江苏省社会发展科技计划项目"柳树人工生态系统对受污染水体及土壤的修复"(编号:BS2002028)
关键词
柳树
水体
镉
修复
Willow
Water-body
Cadmium
Phytore.mediation