Journal Article

PreJuSER-20287

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nitrate leaching, direct and indirect nitrous oxide fluxes from sloping cropland in the purple soil area, southwestern China

Zhou, M. ; Zhu, B. ; Butterbach-Bahl, K. ; Wang, T. ; Bergmann, J. ; Brüggemann, N.FZJ* ; Wang, Z. ; Li, T. ; Kuang, F.

2012
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.envpol.2011.12.001

Abstract: This study provides a combined dataset on N loss pathways and fluxes from sloping cropland in the purple soil area, southwestern China. A lysimeter experiment was conducted to quantify nitrate leaching (May 2004-May 2010) and N(2)O emission (May 2009-May 2010) losses. Nitrate leaching was the dominant N loss pathway and annual leaching fluxes ranged from 19.2 to 53.4 kg N ha(-1), with significant differences between individual observation years (P < 0.05). Direct N(2)O emissions due to N fertilizer use were 1.72 ± 0.34 kg N ha(-1) yr(-1), which corresponds to an emission factor of 0.58 ± 0.12%. However, indirect N(2)O emissions caused by nitrate leaching and surface runoff N losses, may contribute another 0.15-0.42 kg N ha(-1) yr(-1). Our study shows that nitrate leaching lowered direct N(2)O emissions, highlighting the importance for a better understanding of the tradeoff between direct and indirect N(2)O emissions for the development of meaningful N(2)O emission strategies.

Keyword(s): China (MeSH) ; Environmental Monitoring (MeSH) ; Fertilizers: analysis (MeSH) ; Nitrates: analysis (MeSH) ; Nitrogen Cycle (MeSH) ; Nitrous Oxide: analysis (MeSH) ; Soil: analysis (MeSH) ; Fertilizers ; Nitrates ; Soil ; Nitrous Oxide ; J ; Nitrate leaching (auto) ; Direct N2O emission (auto) ; Indirect N2O emission (auto) ; Sloping cropland (auto) ; Purple soil (auto)

Note: This study was gratefully supported by National Program on Key Basic Research Plan of China (Grant No. 2012CB417101), the National Science & Technology Pillar Program (Grant No. 2011BAD31B03), the Helmholtz-CAS Joint Laboratory ENTRANCE and the Natural Science Foundation of China (Grant No. 40901144). Furthermore, we sincerely thank Mr. Yanqiang Wang, Zebin Zeng and other staff at Yanting station for their support in the field measurements.

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. Terrestrische Umwelt (P24)

Appears in the scientific report 2012

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Database coverage:
; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; JCR ; NCBI Molecular Biology Database ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection ; Zoological Record

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