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@ARTICLE{Li:902356,
author = {Li, Zhijie and Reichel, Rüdiger and Xu, Zhenfeng and
Vereecken, Harry and Brüggemann, Nicolas},
title = {{R}eturn of crop residues to arable land stimulates {N}2{O}
emission but mitigates {NO}3− leaching: a meta-analysis},
journal = {Agronomy for sustainable development},
volume = {41},
number = {5},
issn = {1773-0155},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2021-04205},
pages = {66},
year = {2021},
abstract = {Incorporation of crop residues into the soil has been
widely recommended as an effective method to sustain soil
fertility and improve soil carbon sequestration in arable
lands. However, it may lead to an increase in the emission
of nitrous oxide (N2O) and leaching of nitrate (NO3−) to
groundwater due to higher nitrogen (N) availability after
crop residue incorporation. Here, we conducted a
meta-analysis based on 345 observations from 90
peer-reviewed studies to evaluate the effects of crop
residue return on soil N2O emissions and NO3− leaching for
different locations, climatic and soil conditions, and
agricultural management strategies. On average, crop residue
incorporation significantly stimulated N2O emissions by
$29.7\%,$ but decreased NO3− leaching by $14.4\%.$ The
increase in N2O emissions was negatively and significantly
correlated with mean annual temperature and mean annual
precipitation, and with the most significant changes
occurring in the temperate climate zone. Crop residues
stimulated N2O emission mainly in soils with pH ranging
between 5.5 and 6.5, or above 7.5 in soils with low clay
content. In addition, crop residue application decreased
NO3− leaching significantly in soils with sandy loam,
silty clay loam, and silt loam textures. Our analysis
reveals that an appropriate crop residue management adapted
to the site-specific soil and environmental conditions is
critical for increasing soil organic carbon stocks and
decreasing nitrogen losses. The most important novel finding
is that residue return, despite stimulation of N2O
emissions, is particularly effective in reducing NO3−
leaching in soils with loamy texture, which are generally
among the most productive arable soils.},
cin = {IBG-3},
ddc = {640},
cid = {I:(DE-Juel1)IBG-3-20101118},
pnm = {2173 - Agro-biogeosystems: controls, feedbacks and impact
(POF4-217)},
pid = {G:(DE-HGF)POF4-2173},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000703487000002},
doi = {10.1007/s13593-021-00715-x},
url = {https://juser.fz-juelich.de/record/902356},
}