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@ARTICLE{Amelung:838405,
author = {Amelung, Wulf and Cade-Menun, Barbara J. and Bol, Roland
and Willbold, Sabine and Cao, Zhihong and Klumpp, Erwin and
Jiang, Xiaoqian},
title = {{S}oil organic phosphorus transformations during 2000 years
of paddy-rice and non-paddy management in the {Y}angtze
{R}iver {D}elta, {C}hina},
journal = {Scientific reports},
volume = {7},
number = {1},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2017-07017},
pages = {10818},
year = {2017},
abstract = {The contents and properties of soil organic phosphorus (Po)
largely drive ecosystem productivity with increasing
development of natural soil. We hypothesized that soil Po
would initially increase with paddy management and then
would persist under steady-state conditions. We analyzed
soils from a 2000-year chronosequence of a rice-wheat
rotation and an adjacent non-paddy 700-year chronosequence
in Bay of Hangzhou (China) for their Po composition using
solution 31P-NMR after NaOH-EDTA extraction. Land
reclamation promoted Po accumulation in both paddy and
non-paddy topsoils (depths ≤ 18 cm) until
steady-state equilibria were reached within 200 years of
land use. Greater Po concentrations were found, however, in
the non-paddy subsoils than in those under paddy management.
Apparently, the formation of a dense paddy plough pan
hindered long-term Po accumulation in the paddy subsoil. The
surface soils showed higher proportions of orthophosphate
diesters under paddy than under non-paddy management, likely
reflecting suppressed decomposition of crop residues despite
elevated microbial P compounds stocks under anaerobic
paddy-rice management. Intriguingly, the composition of Po
was remarkably stable after 194-years of paddy management
and 144-years of non-paddy management, suggesting novel
steady-state equilibria of P dynamics had been reached in
these man-made ecosystems after less than two centuries.},
cin = {IBG-3 / ZEA-3},
ddc = {000},
cid = {I:(DE-Juel1)IBG-3-20101118 / I:(DE-Juel1)ZEA-3-20090406},
pnm = {255 - Terrestrial Systems: From Observation to Prediction
(POF3-255)},
pid = {G:(DE-HGF)POF3-255},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28883643},
UT = {WOS:000409561800069},
doi = {10.1038/s41598-017-10071-0},
url = {https://juser.fz-juelich.de/record/838405},
}