加根条件下PAHs污染土壤理化性质的动态变化  

The dynamic changes of physical-chemical properties in PAHs contaminated soil under roots addition

作　　者：赵文滔[1] 朱凡[1,2] 陈婷[1] 洪湘琦 高吉权 胡丰姣 黄鑫浩 

机构地区：[1]中南林业科技大学生命科学与技术学院,湖南长沙410004 [2]南方林业应用技术国家工程实验室,湖南长沙410004

出　　处：《中南林业科技大学学报》2015年第7期100-104,共5页Journal of Central South University of Forestry & Technology

基　　金：湖南省教育厅资助科研项目(12A149);国家林业局推广项目(2012-64);国家林业局软科学研究项目(2013-R09);湖南省林业厅科技项目;湖南省普通高校青年骨干教师培养对象

摘　　要：多环芳烃(PAHs)是普遍存在于环境中的持久性有机污染物,土壤理化性质影响PAHs污染土壤植物修复的效率。以菲为多环芳烃(PAHs)代表物,人工添加栾树细根,设置3个处理:1加根处理:加根、加菲;2无根处理:不加根、加菲;3对照:不加根、不加菲,研究细根添加下菲污染土壤理化性质的动态变化。结果表明:(1)菲污染土壤p H略有上升,细根添加对污染土壤p H影响不明显;(2)菲污染显著增加了土壤有机质含量,细根添加进一步增加污染土壤有机质含量;(3)菲污染显著降低了土壤全N、P含量,细根添加增加了污染土壤N、P含量,但仍低于对照。Polycyclic Aromatic Hydrocarbons （PAils） are widely permanent organic pollutant in nature. Soil physical-chemical properties plays key role in the efficiency of PAHs after phytoremediation. Soil pot experiment were conducted to investigate the physical-chemical properties in PAHs contaminated soil under roots addition. The experiment were treated with fine roots and phenanthrene to three kinds of treatments： ① root addition： adding roots and phenanthrene; ② non-root： no root and adding phenanthrene;③ control： no root and no phenanthrene. The results showed that the pH were increased slightly in phenanthrene contaminated soil, but pH were little changed with root addition. The organic matter were increased significantly in phenanthrene contaminated soil, but The organic matter were further increased with root addition in base. The total nitrogen and total phosphorus were decreased significantly in phenanthrene contaminated soil, but they were increased with root addition and were lower than the control.

关 键 词：细根 土壤 理化性质 PAHS 栾树 

分 类 号：S718.51[农业科学—林学]