کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4427201 1309150 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nitrous oxide emission from polyculture constructed wetlands: Effect of plant species
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Nitrous oxide emission from polyculture constructed wetlands: Effect of plant species
چکیده انگلیسی

Loss of nitrogen from the soil-plant system has raised environmental concern. This study assessed the fluxes of nitrous oxide (N2O) in the subsurface flow constructed wetlands (CWs). To better understand the mechanism of N2O emission, spatial distribution of ammonia-oxidizing bacteria (AOB) in four kinds of wetlands soil were compared. N2O emission data showed large temporal and spatial variation ranging from −5.5 to 32.7 mg N2O m−2 d−1. The highest N2O emission occurred in the cell planted with Phragmites australis and Zizania latifolia. Whereas, the lower emission rate were obtained in the cell planted with P. australis and Typha latifolia. These revealed that Z. latifolia stimulated the N2O emission. Transportation of more organic matter and oxygen for AOB growth may be the reason. The study of AOB also supported this result, indicating that the root structure of Z. latifolia was favored by AOB for N2O formation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 152, Issue 2, March 2008, Pages 351–360
نویسندگان
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