期刊论文

中文

林业科学

1001-7488

2006

42

11

12-16

10.3321/j.issn:1001-7488.2006.11.003

国家自然科学基金项目（30571487、30271043） 国家科技部平台建设项目（20021220） 湖南省教育厅项目（05C331） 湖南省自然基金项目（051140127） 国家林业局重点项目（2004-163、2005-203）.

本校为第一机构

研究樟树林地和无林地土壤中PAHs的含量和分布特征,并对两种土地类型土壤中的PAHs含量水平进行评价.结果表明:两种土地类型土壤中PAHs主要积累在0～30 cm的表土层,并随土层加深而明显减少,各土层中以高环的PAHs组分为主,PAHs主要源于燃烧源;樟树林地土壤中PAHs含量明显低于无林地,无林地表土层中PAHs含量是樟树林地表土层的1.1倍;对两种土壤中的PAHs含量水平进行评价,得知樟树林地土壤PAHs超标5种,无林地土壤不仅超标8种,且超标倍数明显大于樟树林地,樟树林地土壤的PAHs污染程度小于无林地.

Concentration and distribution characteristics of PAHs in soil between a Cinnamomum camphora stand and a bare land were studied, and PAHs concentration levels in two kinds of soil were evaluated. The results showed PAHs mainy accumulated in 0 - 30 cm soil depth in two lands and apparently decreased with the increasing of soil depth. Every soil layer was dominated by high molecular weight PAHs, So PAHs mainly result from combustion. The PAHs concentration is 1.1 times as much in the C. camphora forest land as in the bare land, In addition, the evaluation also implied PAHs concentrations in the ...