Title of article
The effects of plant diversity on nitrous oxide emissions in hydroponic microcosms
Author/Authors
Sun، نويسنده , , Hongying and Zhang، نويسنده , , Chongbang and Song، نويسنده , , Changchun and Chang، نويسنده , , Scott X. and Gu، نويسنده , , Baojing and Chen، نويسنده , , Zhengxin and Peng، نويسنده , , Changhui and Chang، نويسنده , , Jie and Ge، نويسنده , , Ying، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
4
From page
544
To page
547
Abstract
Previous studies have shown that plant diversity can improve the wastewater purification efficiency of constructed wetlands (CWs), but its effect on the nitrous oxide (N2O) emission in CWs has been unknown. To investigate the effect of plant diversity on the N2O emission, we established four plant species richness levels (each level containing 1, 2, 3 and 4 species, respectively) by using 96 hydroponic microcosms. Results showed that plant species richness enhanced the N2O emission, ranging from 27.1 to 115.4 μg N2O m−2 d−1, and improved nitrate removal (P < 0.001). The presence of Phalaris arundinacea within a given plant community increased the N2O emission (P < 0.001). The presence of Rumex japonicas had no influence on the N2O emissions (P > 0.05), but improved nitrogen removal (P < 0.001). Hence, our study highlights the importance of both plant species richness and species identity in mediating the N2O emission and nitrogen removal in CWs.
Keywords
Plant species richness , N2O emission , nitrogen removal , Constructed wetlands
Journal title
Atmospheric Environment
Serial Year
2013
Journal title
Atmospheric Environment
Record number
2241476
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