Nitrification in polluted soil fertilized with fast- and slow-releasing nitrogen: A case study at a refinery landfarming site

被引：15

作者：

Peltola, R

Salkinoja-Salonen, M

Pulkkinen, J

Koivunen, M

Turpeinen, AR

Aarnio, T

Romantschuk, M

机构：

[1] Univ Helsinki, Dept Appl Chem & Microbiol, FIN-00014 Helsinki, Finland

[2] Kemira GroHow Oy, FIN-00101 Helsinki, Finland

[3] Univ Helsinki, Ecol & Environm Sci, FIN-15140 Lahti, Finland

[4] Forest Res Inst, FIN-01300 Vantaa, Finland

[5] Univ Helsinki, Dept Bio & Environm Sci, FIN-00014 Helsinki, Finland

来源：

ENVIRONMENTAL POLLUTION | 2006年 / 143卷 / 02期

基金：

芬兰科学院;

关键词：

nitrification; soil; contamination; oil; landfarming;

D O I：

10.1016/j.envpol.2005.11.029

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The nitrifying activity and the effect of fertilization with urea and methylene urea were studied in a landfarming site. The site has been operative over 20 years and maintained by heavy nitrogen fertilization. The landfarming soil contained 4-6% (w/w) oil. The nitrate accumulation was 20-50 mg NO3-N day(-1) kg(-1) observed after methylene urea fertilization of 889 g N m(-2). Nitrification ex situ (in laboratory conditions) was 8.8 mg NO3-N day(-1) kg(-1) in the presence of 380 mg kg(-1) NH4+-N. The half-saturation concentration of nitrification was more than 200 mg NH4+-N kg(-1). The results show that nitrification was active in soil with high oil concentration. Urea fertilization of 893 g N m(-2) caused an increase of soil NH4+-N concentration up to 5500 mg kg(-1) and pH > 8.5. This led to inhibition of nitrification, which persisted after NH4+ concentration decreased below 200 mg NH4+ kg(-1). (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：247 / 253

页数：7

共 44 条

[1] MINERALIZATION OF C AND N AND NITRIFICATION IN SCOTS PINE FOREST SOIL TREATED WITH NITROGEN FERTILIZERS CONTAINING DIFFERENT PROPORTIONS OF UREA AND ITS SLOW-RELEASING DERIVATIVE, UREAFORMALDEHYDE [J].