TY  - JOUR
AU  - Zhou, M.
AU  - Zhu, B.
AU  - Butterbach-Bahl, K.
AU  - Wang, T.
AU  - Bergmann, J.
AU  - Brüggemann, N.
AU  - Wang, Z.
AU  - Li, T.
AU  - Kuang, F.
TI  - Nitrate leaching, direct and indirect nitrous oxide fluxes from sloping cropland in the purple soil area, southwestern China
JO  - Environmental pollution
VL  - 162
SN  - 0269-7491
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - PreJuSER-20287
SP  - 361 - 368
PY  - 2012
N1  - 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.
AB  - 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.
KW  - China
KW  - Environmental Monitoring
KW  - Fertilizers: analysis
KW  - Nitrates: analysis
KW  - Nitrogen Cycle
KW  - Nitrous Oxide: analysis
KW  - Soil: analysis
KW  - Fertilizers (NLM Chemicals)
KW  - Nitrates (NLM Chemicals)
KW  - Soil (NLM Chemicals)
KW  - Nitrous Oxide (NLM Chemicals)
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:22243886
UR  - <Go to ISI:>//WOS:000301087800046
DO  - DOI:10.1016/j.envpol.2011.12.001
UR  - https://juser.fz-juelich.de/record/20287
ER  -