Phragmites australis effects on N2O emission in the Chongming eastern tidal flat

Yong Li; Min Liu; Min Lu; Lijun Hou; Xiao Lin

Phragmites australis effects on N₂O emission in the Chongming eastern tidal flat

Yong Li, Min Liu, Min Lu, Lijun Hou, Xiao Lin

East China Normal University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We investigated the emission fluxes of N₂O from the Phragmites australis marsh of Chongming Dongtan in the Yangtze estuary, using a static chamber combined with a gas chromatograph. The results showed that within the growth seasons, the changes of NO₃^--N in the high tidal flat without vegetation cover were similar to those in the reed rhizospheric sediments. Compared with NO₃^--N, the variations of NH₄⁺-N differed between bare and vegetated sediments. The reed was observed to significantly enhance the release of N₂O from sediments. N₂O effluxes were respectively 0.71 and -4.02μg · m^-2 · h^-1 in bare sediments in July and January whereas they increased to 566.28 μg · m^-2 · h^-1 and 67.54 μg · m^-2 · h^-1 in rhizospheric sediments in both seasons. Besides NO₃^--N, NH₄⁺-N, temperature and water content, the physiological processes of plant also controlled the N₂O emission.

Original language	English
Pages (from-to)	2526-2534
Number of pages	9
Journal	Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae
Volume	30
Issue number	12
State	Published - Dec 2010

Keywords

Chongming Dongtan
Nitrogen
Nitrous oxide
Phragmites australis
Seasonal variation

Cite this

@article{6cba3401f737470891324605249d73f0,

title = "Phragmites australis effects on N2O emission in the Chongming eastern tidal flat",

abstract = "We investigated the emission fluxes of N2O from the Phragmites australis marsh of Chongming Dongtan in the Yangtze estuary, using a static chamber combined with a gas chromatograph. The results showed that within the growth seasons, the changes of NO3--N in the high tidal flat without vegetation cover were similar to those in the reed rhizospheric sediments. Compared with NO3--N, the variations of NH4+-N differed between bare and vegetated sediments. The reed was observed to significantly enhance the release of N2O from sediments. N2O effluxes were respectively 0.71 and -4.02μg · m-2 · h-1 in bare sediments in July and January whereas they increased to 566.28 μg · m-2 · h-1 and 67.54 μg · m-2 · h-1 in rhizospheric sediments in both seasons. Besides NO3--N, NH4+-N, temperature and water content, the physiological processes of plant also controlled the N2O emission.",

keywords = "Chongming Dongtan, Nitrogen, Nitrous oxide, Phragmites australis, Seasonal variation",

author = "Yong Li and Min Liu and Min Lu and Lijun Hou and Xiao Lin",

year = "2010",

month = dec,

language = "英语",

volume = "30",

pages = "2526--2534",

journal = "Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae",

issn = "0253-2468",

publisher = "Science Press ",

number = "12",

}

TY - JOUR

T1 - Phragmites australis effects on N2O emission in the Chongming eastern tidal flat

AU - Li, Yong

AU - Liu, Min

AU - Lu, Min

AU - Hou, Lijun

AU - Lin, Xiao

PY - 2010/12

Y1 - 2010/12

N2 - We investigated the emission fluxes of N2O from the Phragmites australis marsh of Chongming Dongtan in the Yangtze estuary, using a static chamber combined with a gas chromatograph. The results showed that within the growth seasons, the changes of NO3--N in the high tidal flat without vegetation cover were similar to those in the reed rhizospheric sediments. Compared with NO3--N, the variations of NH4+-N differed between bare and vegetated sediments. The reed was observed to significantly enhance the release of N2O from sediments. N2O effluxes were respectively 0.71 and -4.02μg · m-2 · h-1 in bare sediments in July and January whereas they increased to 566.28 μg · m-2 · h-1 and 67.54 μg · m-2 · h-1 in rhizospheric sediments in both seasons. Besides NO3--N, NH4+-N, temperature and water content, the physiological processes of plant also controlled the N2O emission.

AB - We investigated the emission fluxes of N2O from the Phragmites australis marsh of Chongming Dongtan in the Yangtze estuary, using a static chamber combined with a gas chromatograph. The results showed that within the growth seasons, the changes of NO3--N in the high tidal flat without vegetation cover were similar to those in the reed rhizospheric sediments. Compared with NO3--N, the variations of NH4+-N differed between bare and vegetated sediments. The reed was observed to significantly enhance the release of N2O from sediments. N2O effluxes were respectively 0.71 and -4.02μg · m-2 · h-1 in bare sediments in July and January whereas they increased to 566.28 μg · m-2 · h-1 and 67.54 μg · m-2 · h-1 in rhizospheric sediments in both seasons. Besides NO3--N, NH4+-N, temperature and water content, the physiological processes of plant also controlled the N2O emission.

KW - Chongming Dongtan

KW - Nitrogen

KW - Nitrous oxide

KW - Phragmites australis

KW - Seasonal variation

UR - https://www.scopus.com/pages/publications/79952540307

M3 - 文章

AN - SCOPUS:79952540307

SN - 0253-2468

VL - 30

SP - 2526

EP - 2534

JO - Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae

JF - Huanjing Kexue Xuebao / Acta Scientiae Circumstantiae

IS - 12

ER -

Phragmites australis effects on N₂O emission in the Chongming eastern tidal flat

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